DE8501282U1 - Device on a lockable water fitting for connecting the latter to a pipeline - Google Patents

Description

• ■ I

I ti ··· · 4 · «

> II I · · ■ · t · · ««

Knebel & Röttgfir 8491/85

Device on a lockable water fitting to connect the latter

with a pipeline

The invention relates to a device on a lockable water fitting, in particular on one Mixer tap for connecting the latter to a pipeline, the pipeline in one of these adapted bore of the valve inserted, furthermore fixed and form-locking in the axial direction is sealed by means of at least one ring seal.

From DE-OS 32 45 890 it is known to be inserted into corresponding holes in the valve Solder pipelines pressure-tight. Such However, soldering processes are relatively time-consuming and costly, and they also require specialists. That's why Is suggested in the above German Offenlegungsschrift at the male end of each

Knebel & Röttger 8491/85

metallic pipeline to upset an annular collar and onto the plug-in end part Put a ring seal on each pipeline. Furthermore, one is penetrated by the pipeline and in the p-i direction at the collar of the pipeline a supporting fitting is provided, via which by means of a screw drive the pipeline with its collar to a fixed housing Abutment is tensioned, being arranged in between the collar and the aforementioned abutment Ring seal is elastically biased.

In this case, the otherwise necessary soldering processes are omitted, but this is also possible Connection relatively complicated and expensive.

The object of the invention is now to provide a device for a lockable water fitting Connection of the latter with a pipeline of the type specified in the preamble of claim 1

• Λ

• ·> ··· a · «ι _{t t}

* * t I · If I

■■ «· ■ ·· III Il III

Knebel & Röttger 8491/85

to improve in such a way that a substantial simplification and cheaper both the production as well as assembly is achievable.

The solution to this problem is characterized in that the uninterrupted Einsteckendteil the pipeline has at least one outwardly protruding latching projection formed on it, which in an inwardly open recess arranged in the bore is crimped.

This allows the pipeline to be connected to

the fitting only to insert it into the bore of the fitting adapted to it, inevitably A form-locking connection in the axial direction is also achieved without manual intervention.

A preferred embodiment for this purpose consists in that on the plug-in end part of the pipeline several, distributed around the circumference and at a distance

tit · · ·

ι ιι ··· · ■

:: / fo

Knebel & Röttger 8491/85

juxtaposed locking projections are provided, and that in the bore one for receiving all Rastvorspriige certain annular groove is arranged.

With all of this it is advantageous if the pipeline is made of plastic.

In addition, a configuration that favors the assembly of the pipeline is characterized in that the locking projections each rise outwards against the direction of insertion of the pipeline, first flank and an adjoining, backward sloping, second flank, each having the angle of inclination of the second flank is greater than that of the first flank.

In this case, the second flank can at least approximately correspond to the longitudinal axis of the pipe Include right angles so that the loosening of the

), 1 1 (II III H "< / J. I

Knebel & Röttger 8491/85

- 10 -

Piping out of the valve is almost impossible.

An advantageous option for sealing the pipeline is characterized in that in of the hole in the direction of insertion of the pipeline behind the one intended for receiving the locking projections Recess an annular groove with at least approximately the longitudinal extension of the bore At right angles directed flanks is arranged, in which one of these adapted and the Einsteckendteil the pipeline has a tight-fitting comprehensive O-ring.

This also creates a force-fit connection between the fitting by means of the seal and the pipeline, which prevents accidental detachment of the pipeline from the valve continue to be difficult.

A variant which may be preferred under certain circumstances is characterized in that on the male end part

* · · · · · ■ t t I I I

ItI t t * ·· t it

■ I I I t t

Knebel & Röttger 6491 / S5

- 11 -

of the pipeline at an axial distance from the locking projections at least one ring-shaped closed lip seal is formed on the circumferential side rests tightly against the wall of the bore, preferably also the lip seal is arranged closer to the free end of the pipeline than the locking projections and in particular in addition, the diameter of the lip seal is larger than the diameter of the bore, and that the lip seal is inserted into the bore in an elastic, barb-like manner.

It is particularly advantageous if the diameter of the lip seal is approximately the same as the diameter of the Corresponds to the circumference of the locking projections, and that in the bore one for receiving both the locking projections as well as the lip seal certain, inwardly open annular groove is arranged.

As a result, a form-fitting effective safeguard against pulling out of the is also provided by means of the seal

Knebel & Röttger 8491/85

- 12 -

Pipe reached from the valve.

Embodiments of the invention are in Drawing shown and are explained in more detail below described.

The drawing shows part of a mixer tap in longitudinal section.

Here are two pipes 2 and 3 made of plastic on the mixer tap 1

connected, including the latter in a cylindrical bore 4 or 5 of the valve 1 are inserted with a clearance fit.

To define the pipes 2 and 3 in the axial direction are in each case several on the latter, on the Distributed around the circumference and spaced apart from one another and at the same level as locking projections molded. The locking projections 6 of each pipeline are in a common, as a circumferential, after internally open annular groove formed recess 7 a

Knebel & Röttger 8491/85

- 13 -

blown up. The locking projections 6 each have against the entry direction of the pipelines 2 and 3 outwardly rising flanks 8, the in each case in flanks 9 directed inwards at right angles to the longitudinal extension of the pipeline pass over. The flanks of the recesses 7 adjacent to the flanks 9 are aligned with the flanks 9 arranged.

For sealing the pipe 2 in the mixer tap

1, an annular groove 10 is arranged in the bore 4 at an axial distance from the recess 7, into which a tightly 1ießend encompassing the pipeline 2 O-ring is used to facilitate the insertion of the pipe 2 through the O-ring 11, it is advantageous, the outer free edge of the pipeline

2 to be chamfered.

The second pipeline 3 can also be like the pipeline 2 must be sealed. But it is also possible

• ·· ta · «« ti · «

II · ■ ■ ■ ■ ·

, K

Knehel & Röttger 8491/85

- 14 -

to seal both pipes according to the pipe 3, including with an axial distance from the locking VCrS ⁿ rÜH ⁿ Sn 6 2 Π ^ eI "Rohrl *" **** " ¹¹ * ¹⁰ ^ m ο h τ · ο τ ~ ο" in axial direction spaced one behind the other, disc-shaped lip seals 12 are formed, the outer diameter of which is greater than the diameter of the bore 5 »so that the lip seals 12 when plugged into the bore are elastically bent like a barb.

Furthermore, the receptacle 7, which is designed as a cylindrical bore widening, is also used here all lip seals 12 formed, from which below other significant manufacturing simplifications result,

All new individual and combination features disclosed in the description and / or drawing are regarded as essential to the invention.

Claims (10)

1 "Device on a lockable water fitting, in particular on a mixer tap for connection the latter with a pipeline, the pipeline in one of these adapted bore of the Fitting inserted, furthermore fixed in the axial direction with a form-fitting and by means of at least a ring seal is sealed, characterized in that the uninterrupted Einsteckendteil the pipeline (2,3) at least one outwardly protruding latching projection (6) is formed which is compressed into an inwardly open recess (7) arranged in the bore (4 or 5). Knebel & Röttger 8491/85 2. Apparatus according to claim 1, characterized in that the plug-in end part of the pipeline (2,3) several, distributed over the circumference and arranged at a distance next to one another Latching projections (6) are provided and that in the bore (4 or 5) one for receiving all locking projections (6) certain annular groove is arranged. 3. Apparatus according to claim 1 or 2, characterized in that the pipeline (2,3) from Made of plastic. 4. Device according to one of the preceding claims, characterized in that the locking projections (6) each one rising outwards against the direction of insertion of the pipe (2, J), • · ■ · Knebel & Röttger 8491/85 first edge (8) and a subsequent} have backward sloping, second flank (9), the angle of inclination of the second flank (9) is greater than that of the first flank (8). 5. Device according to one of the preceding claims, characterized in that in each case the second flank (9) with the longitudinal axis of the pipeline
(2,3) encloses an at least approximately right angle. 6. Device according to one of the preceding claims, characterized in that in the bore (4) in Insertion direction of the pipeline (2) behind the recess intended to receive the locking projections (6) (7) an annular groove (10) with at least approximately the longitudinal extension of the bore (4) Knebel & Röttger 8491/85 At right angles directed flanks is arranged in which one of these adapted and the Plug-in end part of the pipeline (2) sealingly encompassing O-ring (11) is used is. 7. Device according to one of the preceding claims, characterized in that the plug-in end part of the pipeline (3) at an axial distance from the locking projections (6) at least one ring-shaped closed lip seal (12) is formed, the circumferential side on the wall of the bore fits tightly. 8. Apparatus according to claim 7, characterized in that the lip seal (12) the f-fcien end of the pipeline (3) is arranged closer than the load projections (6). Knebel & Röttger 8491/85 9. Apparatus according to claim 7 or 8, characterized in that the diameter of the lip seal (12) is larger than the diameter of the bore (5), and that the lip seal (12) is inserted into the bore (5) elastically bent over like a hook. 10. Device according to one of the preceding claims, characterized in that the diameter of the lip seal (12) etdfe corresponds to the diameter of the circumference of the locking projections (6 Y _x , and that in the bore (5) a too * recording as well as ^{1 of} the locking projections ( 6) and the lip seal (12) certain, inwardly open annular groove is arranged. -. <old