DE1031066B - Quick coupling for plastic pipes - Google Patents

Description

GERMAN

Plastic pipes are suitable for use in irrigation and fire extinguishing systems. One However, the difficulty lies in attaching a tensile and pressure-resistant coupling to the pipe ends, which can also be angled widely.

According to the invention, grooves are provided at a certain distance from the pipe end, the one Take up the resilient retaining ring made of steel, light metal or plastic. These retaining rings are in place in connection with clamping shells which have a spherical recess so that the coupling neck rolls off is possible. There is a two-part joint sleeve between the two clamping shells arranged as a seal. Pipe connections for steel pipes have already become known in which a plug-in pipe end with a round rubber ring at its end in a socket of the other pipe end engages, with the socket having a spherical recess in which the round rubber ring is located Ablection can roll off.

Furthermore, according to an older proposal, a quick coupling for steel pipes in the respective At the end of the pipe an outwardly curved bead is attached to which a metallic ring rests, which in turn engages in a spherical recess of clamping shells.

However, these methods could not be used with plastic pipes. The quick coupling according to the invention brings great advantages with plastic pipes. The weight of the lightweight plastic pipe alone It is not enough to make progress in practical application usable, but to do so includes a simple, safe, material-appropriate high-pressure coupling as a quick-release fastener, which is a good Allows deflection.

In the drawings, an embodiment of the invention is shown in FIGS.

In the figures, α denotes the plastic pipe, b the two clamping shells, c the two-part articulated sleeve with a double function, namely as a sleeve seal against the smooth pipe end and as a face seal, d is the resilient retaining ring around which the clamping shell b with a spherical Recess b 1 rolls off. When it is rolled off, the joint manoehette follows the angled end of the pipe. The cuff is pretensioned and has a garter-like effect, e are toggle lever locking elements; / are the screws for holding the coupling shells together and at the same time the hinge pins for the locking elements, g is the parting line for the clamping clials b. There are both quick couplings for plastic pipes

Applicant:

Karl Ludwig Lanninger,
Frankfurt / M.-West, Frauenlobstr. 52

Karl Ludwig Lanninger, Frankfurt / M.-West,
has been named as the inventor

Shells b pulled tightly together by the screws /.

In FIGS. 3 and 4 is shown how, if appropriate, such a plurality of resilient wire rings are mounted side by side, that the main ring d the thrust and the detention of a resilient ring 1 d receives.

A locking ring is denoted by d2 , which has the task of preventing the resilient ring d from being able to go beyond its grooves under higher loads.

Claims (3)

PATENT CLAIMS: 1. Quick coupling for plastic pipes, characterized in that a resilient ring (d) mounted in a groove of the pipe end sits in a spherical recess (b X) of a two-part clamping shell (b) and in this way the coupling thrust and the rolling of the coupling neck Bending of the pipe ends takes over. 2. Quick coupling according to claim 1, characterized in that an elastic sealing sleeve (c), which sits with bias on the pipe end, follows the angulation of the pipe joints in connection with the rolling of the coupling neck on the retaining ring (d) . 3. Quick coupling according to claim 1 or 2, characterized in that the coupling parts are designed to be fully symmetrical and the connecting bolts (/) bearing or attack points for form the closure elements.