DE7825916U1 - PIPE - Google Patents

Description

The innovation relates to a pipe, in which to enable a plug connection with a to be inserted Another pipe at an enlarged end a sleeve is provided in which a support ring for a deformable sealing ring is fixed.

Pipes that have an extension at one end in which a sealing ring is mounted, sir.d in different Executions become known. A major problem in the construction of such devices is that the sealing ring when inserting the with the first Pipe to be connected further pipe should not be brought out of the intended position, although in the final state the connection between the sealing ring and the inserted pipe should naturally act considerable forces.

In the known devices according to AT-PS 316.944 and AT-PS 335.239, this problem was solved in such a way that the support ring during the joining of the two Pipes located in a position that enables the sealing ring to insert the inner cross-section of the pipe carrying it to release the second pipe. Only after the second tube has been inserted is the support ring fully tightened and thus a frictional connection between the sealing ring and the inserted pipe is established. The disadvantage of these compounds is that after the pipes have been plugged together on the support ring must be manipulated, which is time-consuming and reasonably trained Personnel required.

The disadvantage shown is in DE-PS 1,129,344 and AT-PS 292,403, which are more similar to the innovation thereby avoided that the support ring and sealing ring before the pushing together of the pipes to be connected in their final position are set. However, the disadvantage of the known designs is the cumbersome and

7825916 12/07/78

• Clafl

costly type of mutual fixing of sealing ring and support ring. According to DE-PS 1,129,344 these namely, both parts before being screwed into the socket of the outer tube by vulcanizing them together connected, which is not only a separate machining step, but also a relatively complicated shape of the Requires sealing ring. According to AT-PS 292.403, no permanent connection is provided between the support ring and the sealing ring, but the envisaged possibility of connecting these two parts with each other in a form-fitting manner is bought at the expense of that the sealing ring must be provided with a circumferential retaining ring which is held in an annular groove of the support ring will.

The innovation is based on a device according to the last-mentioned prior publication and makes it possible under Avoidance of the previously mentioned disadvantages of other plug connections, a simple sealing ring, in particular to hold a sealing ring with a circular cross-section so that it is on the one hand by the insertion of the second Pipe is not shifted and on the other hand is able to exert the necessary sealing pressure immediately. According to the innovation this is achieved in that the inner surface of the pipe iia the area of the transition to the socket together with the conical converging end face of the support ring has a cavity widening outward in cross section for receiving of the sealing ring, which is preferably circular in cross section.

A particular advantage of the innovation is that the tube in which another tube is simply inserted is to be attached, can already be put into the state of use by the manufacturer. This can work on the construction site with little trained personnel without fear that the insertion of the Sealing ring is done improperly or not at all.

7825916 12/07/78

Further details of the innovation emerge from the following drawing, in the two exemplary embodiments are shown in longitudinal section.

In both embodiments, the tube 1 is on his Provided the end with an extension, which allows the insertion of a further fine pipe 1 '. In the area of this Extension is a socket 2. In socket 2 If a support ring 4 can be screwed in as is known, any other type of connection is also floch, in particular (ßie formation of a snap connection, possible. The support ring 4 not only forms a reinforcement of the pipe end, Rather, it serves, in particular, to create an outwardly diverging cavity 5 together with the inside of the sleeve 2 form, in which a sealing ring 6 or 6 'is held.

if, as in the exemplary embodiment according to FIG. 1, a sealing ring with a circular cross-section is provided Teweckweise also the cavity 5 with simple trapezoidal cross-section. The sealing ring 6 Bteht so far into the interior of the tube 1 that it the insertion of the tube 1 'allowed the relative movement the tubes 1 and 1 'but opposed considerable resistance.

If further deformation of the sealing ring is required, a different cross-section can also be selected for this Are then, as shown in Fig. 2, for the part of the sealing ring 6 'bent out by the inserted pipe 1' a displacement space 7 can be provided in the area of the sleeve 2.

7825916 12/07/78

Claims (1)

Protection claim .: Pipe that enables a S-plug connection with a further pipe to be inserted, a sleeve is provided at a widened end, in which a support ring for a deformable sealing ring is fixed is, characterized in that the inner surface of the pipe (1) in the area of the transition to the socket (2) together with the conically converging face (3) of the support ring (4) has a hollow space (5) widening outward in cross-section to accommodate the preferably circular sealing ring (6,6 ') in cross section forms. 21945 11 / hd 7825916 07.1178