FR2547390A1 - Wash-basin syphon plug-in coupling - Google Patents

Abstract

The coupling secures a wash basin drain pipe, and includes an integral groove at one pipe end in which fits pipe end which at one end has an O-ring accommodated in groove. A protrusion limits the movement of pipe, further assisted by beaded flange on the pipe. To assist insertion when assembling pipe has a conical end part. Alternatively a cap nut closure may secure the coupling.

Description

 The invention relates to a connection for pipes, in particular for siphons for sinks, comprising sockets formed on the respectively wider end sections, or as the case may be narrower, of the pipes to be connected.

 Pipe fittings are known, in which the maple link coupling is produced by a screw connection.

 These pipe fittings often have the disadvantage, in particular at the connection points located directly under the sinks, that each of the sockets, in particular that which is associated with the lower part of evacuation bungs, also turns during uncoupling attempts.

 Another drawback lies in the fact that these pipe fittings are frequently placed in assembly areas which are difficult to access manually, and that, already because of this difficulty of access, it is very difficult to uncouple and also to tighten such fittings. to screw.

 The object of the present invention is to propose a means which eliminates these drawbacks, by enabling faster and simpler mounting and simultaneously ensuring better sealing, in particular in mounting areas which are difficult to access manually.

 According to the invention, this object is achieved by the fact that the socket of the pipe end lying outside has a groove intended to receive an O-ring, and that the socket of the pipe end is located inside is provided with a stop whose cross-section is in the form of a hook, the latter being located, when the socket connection is in the socket position, behind the O-ring in the direction of the socket.

 In order to facilitate the realization of the connection, it is advantageous that the socket of the pipe end located inside has a conical part at its end.

 According to a preferred embodiment of the invention, the socket of the pipe end located inside has a limiting flange Dour facilitate assembly.

 In order to be able to better absorb vibrations transmitted in particular by the drain pipes of washing machines and similar appliances, and to prevent them from causing the coupling fitting to become uncoupled, the socket at the end of pipe outside is present externally, close to the groove, a thread in which a nut turn around can engage for purposes of stabilization.

Another development of the invention consists in completing the connection for pipes with one or more additional records, consisting at least of a groove, an O-point and a Sure,
The invention will now be described, read in detail, by way of nonlimiting example, with reference to the accompanying drawings in which
- Figure 1 is a sectional view of a fitting è socket according to the invention
- Figure 2 is a sectional view of two interlocking fittings dis
Dosed under a sink; and
- Figure 3 is a sectional view of a socket fitting disposed in a starting bend.

 The socket fitting according to the invention, shown in FIG. 1, essentially consists of a first socket 1 provided at the end of an outer pipe section, a groove 2 formed in the end part of the first socket 1 and a second socket 4 provided at the end of an inner pipe section, this second socket 4 comprises, around the outside face of its end part, an O-ring 3 whose position is fixed by a stop 5 in the axial direction. A limiting flange 6 serves 3 to facilitate the realization of the connection by interlocking, preventing that the second socket 4 is pushed into the first socket; further than is necessary for the O-ring 3 comes into place correctly, in the groove 2. To facilitate its introduction into the first socket 1, the second socket 4 has a cone 7 at its end facing the latter.

 FIG. 2 represents a socket fitting arranged under a sink 15 in which is encased an upper part of the drain 15 which has a releasable connection with a lower part of the drain 17. Neither the upper part 16 nor the lower part 17 of the drain n is immobilized in rotation, so that the advantage provided by the invention here becomes particularly manifest, this advantage residing in the fact that a tight pipe connection can be made simply by pushing, whereas such a connection required up to 'now rotating movements.

 The socket fitting which is the subject of the invention can also be combined with conventional threaded fittings, such as for example a fitting fitted with a rotating nut 8.

FIG. 2 also represents a push-fit fitting arranged in
the flow path, downstream of the main body of a siphon 9 and of a lower bell 10, and leading to a starting pipe 11. When a socket fitting is subjected to vibrations, as transmitted by it in general, drain pipes for washing machines and similar devices, it may be appropriate as a safety measure, to consolidate the push-in fitting, by an additional threaded fitting, equipped, for example, with a swivel nut (not represented). In such cases, the advantage of the push-in fitting according to the invention lies in the fact that a connection that is immediately leaktight can be made by simple pushing in areas that are difficult to access, such as built-in cupboards, work tables. Kitchen and similar pieces of furniture. Consolidating this already performed connection only requires very little mechanical work, whereas in the case of conventional fittings, the coupling could only be sealed after complete screwing.

 FIG. 3 shows another possibility of fitting the socket fitting according to the invention, which is here arranged between a starting bend 12 and a tubular siphon 13, while being associated with a conventional threaded fitting fixed by the nut turning 8.

 Of course, we can; also in accordance with the invention, design a socket fitting in which the first socket 1 would include an O-ring 3, while the second socket 4 would have a groove 2 intended to receive the O-ring 3.

 The push-fit fitting according to the invention proves to be particularly advantageous in the case of column sinks, which are currently widely used in new constructions. In this case, the fittings to be connected on the lower part 17 of the drain are difficult to access manually. But in addition, this area is absolutely inaccessible to the action of a pipe wrench, which has hitherto caused the impossibility of making a pipe connection having a sufficient seal.

Claims (5)

 1. Connection for pipes, in particular for sink siphons, comprising sockets respectively provided on the widest end sections, or as the narrowest case, of the pipes to be connected, ca characterized in that the socket ( 1) of the pipe end located on the outside has a groove (2) intended to receive an O-ring (3), and in that the socket (4) of the pipe end located at the 'interior is provided with a stop (5) whose section is in the form of a hook, the latter being located, when the socket connection is in the socket position, behind the O-ring (3) in the direction of the socket.  2 pipe connection according to claim 1, characterized in that the socket (4) of the pipe end located inside, has a conical portion (7) at its end.  3. Pipe connection according to claim 1 or 2, characterized in that the socket (4) of the pipe end located inside has a limiting flange (6).  4. Pipe connection according to any one of claims 1 to 3, characterized in that the socket (1) of the pipe end located outside, has externally near the groove (2) a thread, in which a swivel nut can engage for stabilization purposes.  5. Pipe connector according to any one of claims 1 to 4, characterized in that it is completed by one or more additional interlocking fittings consisting of at least one groove (2), an O-ring (3 ) and a stop (5).