DE1976876U - CONNECTION FOR PIPES. - Google Patents

Description

PATENT LAWYERS

DIPL-INQ. JOACHIM STRASSE, HANAU DR. INQ. ARNO SCHMIDT, MUNICH HANAU FRANKFURTER LANDSTR. 1 POST BOX 793 TEL. 2080S TELEQRAMME: HANAUPATENT

WAVIN N.V. November 1st, 1967

Zwolle, Netherlands _{Str / Jg} _ _{1Q Q24}

Connection for pipes

The innovation relates to a connection for cold and hot water pipes, especially drainage pipes Plastic equipped with a female pipe part provided with a socket end and a female pipe part and which further comprises sealing means, which in a groove-like space provided in the socket end between the receiving and the received pipe part are attached.

Such previously known pipe connections for plastic pipes with the combined possibility of producing a glue connection or a plug connection have a local thickening the wall of the socket end, in which a chamber or groove for a sealing member by machining or by hot forming made of rubber.

A round rubber ring is often used in this groove in order to maintain the correct seal through the received pipe part should be able to be depressed considerably. If during Longer time wastewater with temperatures of 70 ° to 95 ° C is passed through the pipe, causes the rather high specific Pressure of the rubber ring on the plastic tube constricts the recorded pipe part.

In the long run, this leads to the connection leaking In the first phase the constriction of the pipe makes the expansion movements of the pipe impossible. It is also with this one known connection type with round rubber ring required, the the pipe end to be picked up is sufficient first on its front side bevel.

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PATENTANWALTDIPLHNQ ₁ JOACHIMSTRASSEHANAu - 2 -

It is the task of the innovation to create a pipe connection, with the disadvantages occurring in the pipe connections with elastic sealing means in the form of round rubber rings be eliminated.

This object is renewal according achieved in that the sealing means comprise a cooperating with the outer wall of the captured tube part and a sealing attachment part lip-like part at least, bears against the inner wall of a groove which _t by a connected to the socket end, for example by gluing plastic ring. which has an inwardly angled end edge with an inner edge, and an extension lip cooperates with the inner side of the end part of the socket end and wherein the end part of the socket end and the width of the bent end edge to the inner edge. ;. and the distance between the end part and the end edge are chosen such that in a received pipe part, the distance between the inner wall of the groove and the outer wall of the received pipe part is always smaller than the thickness of the sealing means in between and that the sealing fastening part continues axially is clamped between the top edge of the end piece and the end edge.

Preferably, a portion of the socket end has an inner diameter slightly larger than the outer diameter of the one lying in it recorded pipe part, and there is also an additional one Glue connection with the usual slot-filling types of glue available.

With such a pipe connection is the risk of by the The use of round rubber rings prevents constrictions, while forming the chamber in a very simple way can be achieved by gluing said plastic ring. In practice this results in an inexpensive and convenient method of maintaining the grooves for receiving the seals.

As the fastening part of the sealing means with an extension lip is provided with the inner side of the end part

PATENTANWALTDIPLHNQ ₁ JOACHIMSTRASSEhANAU - 3 - I

of the socket end cooperates, is an absolutely reliable Sealing on the outer side along the lip-shaped part resting on the received pipe part and along the other side the sealing fastener, the inner wall of the groove, and the glued-on plastic ring or along the sealing fastening part and between a possibly leaky Connection, like a glue connection, between the plastic ring and the outer side of the end part of the socket end.

It is already known that sealing means consisting of two lips apply, but these lips are radially compressed, and consequently constrictions occur.

The lip-like part preferably has circular transverse grooves.

Further details, features and advantages of the innovation result from the following description of an exemplary embodiment which is shown in the drawing.

The drawing shows a female pipe part for the application of the pipe connection according to the innovation, the pipe part being provided with sealing means which have a lip-like extension and which rests with a slight clamping on the inner side of the end part of a socket end.

In the drawing, a pipe connection according to the innovation is preferred shown for drainpipes made of plastic, the one receiving pipe part provided with a socket end 2 and one Has received pipe part 3. Sealing means 5 between the female pipe part 1 and the received pipe part 3 lie in a groove-shaped space 4 provided in the socket end, ensure the seal.

The sealing means 5 consist of a lip-like part 6, which cooperates with the outer wall 7 of the received Rohr.teils 3. Furthermore, the sealing means 5 have a fastening part 8 which rests against an inner wall 9 of the groove 4, which

PATENT Attorney DIPL-INQ. JOACHIM STRASSE, HANAU ■ '- 4 - ^%

by gluing or other means to the socket end mechanical fastening types attached plastic ring 10 is formed. This plastic ring 10 has at its free End of an inwardly angled end edge 11 with an inner edge 12 on.

A part 13 of the socket end 2 has a diameter that slightly larger than the outer diameter 7 of the received pipe part 3 is. However, this is done in such a way that an additional connection 18 reaches slot-filling glue will. The distance between the upper edge 15 and the end edge is chosen such that the sealing fastening part 9 is axial is pinched between these parts.

The sealing means 5 have in the form of a member made of rubber such a consistency and shape that only a minor one Pressure is exerted on the pipe, while a complete seal is nonetheless ensured. This is the Connection from a pure glue connection to a plug connection converted.

The plastic ring 10 is attached to the end portion 14 to prevent gases over the upper edge 15 of the end portion 14 of the Sleeve end between the outer side of the sealing fastening part 8 and the inner wall of the plastic ring 10 and the inner side of the inwardly angled end edge 11 of the plastic ring 10 and optionally along the glue connection 16 between the plastic ring 10 and the end part 14 of the socket end 2, a lip-like extension 16 is provided, which is connected to the inner side 17 of the end part 14 of the Sleeve end 2 cooperates.

The whole thickness of the rubber parts 6 and 16 is smaller than that radial distance between wall 7 of penetrating pipe part 3 and the inner wall 17 of the groove.

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PATENT Attorney DIPL.-INQJOACHIM STRASSE, HANAU - - 5 - '

In this way it becomes an absolutely reliable seal achieved. Leaks are excluded on all sides of all important points. Parts 6 and 17 of the seal are made not compressed radially, so that there is no constriction of the wall 1? occurs.

Expectations;

Claims (3)

PATENTANWÄLTE ItA. Ό I j I iC 1 * ~ 2/11 67 | DIPL-INQ. JOACHIM STRASSE, HANAU DR. INQ. ARNO SCHMIDT, MUNICH * HANAU FRANKFURTER LANDSTR. 1 POST BOX 793 TEL. 20803 TELEQRAMME: HANAUPATENT WAVIN N.V. November 1, 1967 Zwolle, Netherlands Str / Jg - 10 024 Protection claims: 1. Connection for pipes carrying cold and hot water, in particular Drainage pipes made of plastic, which are provided with a female pipe part provided with a socket end and a received pipe part is provided and which further has sealing means, which are provided in one in the socket end Groove-like space are attached between the receiving and the received pipe part, characterized in that the sealing means (5) at least one connected to the outer wall (7) of the received pipe part (3) and to a sealing fastening part (8) have lip-like part (6) which rests on the inner wall (9) of a groove (4) which is connected to the socket end (2) connected plastic ring (10) is formed, one after has an internally angled end edge (11) with an inner edge (12), and an extension lip (16) with the inner side (17) of the end part (14) of the socket end (2) cooperates, the end part (14) of the socket end and the width of the bent The end edge (11) to the inner edge (12) and the distance between the end part (14) and the end edge (11) are selected such that that with a received pipe part (3) the distance between the inner wall (9, 17) of the groove (4) and the outer wall (7) of the received pipe part is always smaller than the thickness of the sealing means (5) and in between that further the sealing fastening part axially between the clamped upper edge (15) of the end part (14) and the end edge (11) is. PATENTANWALTDIPL-INQ ₁ JOACHIMSTRASSe ₁ HANAU - 2 - 2. Pipe connection according to claim 1, since d u r c h ge k en η draws, that part of the socket end (2) has an inner diameter which is slightly larger than that outer diameter of the received pipe part located therein (3), and the space (18) is filled with conventional slot-filling Et glue. 3. Pipe connection according to claim 1, characterized in that that the lip-like part (6) carries circular transverse grooves.