WO1980001701A1

WO1980001701A1 - Floor connection for sewer

Info

Publication number: WO1980001701A1
Application number: PCT/SE1980/000038
Authority: WO
Inventors: G Soederstroem
Original assignee: G Soederstroem
Priority date: 1979-02-09
Filing date: 1980-02-07
Publication date: 1980-08-21
Also published as: EP0023505A1; SE7901158L; JPS56500068A; NO802963L; FI800400A; DK418680A

Abstract

A connection for connecting sewers to floors for different discharge units, which connection comprises a floor member (1) located in the floor and a clamping ring (2, 9) for clamping a floor covering (7) sealingly in a recess in the floor member or in an intermediate piece (9) complementary to the floor member for reducing the connection dimension, which clamping ring (2, 9) clamps the floor covering (7) in a gap adjusted to the floor covering between the clamping ring (2, 9) and the intermediate piece (9) or the floor member (1), which clamping ring (2, 9) is held in the floor member (1) or in the intermediate piece (8) by snapping means (4, 5, 14, 15), and the floor covering is sealed against the floor member or intermediate piece by an O-ring.

Description

Floo-r connection for sewer

This invention relates to a floor connection for sewers for connecting different discharge units, for example water closet, wach-basin, draining gutter₃ etc. The invention particularly relates to a sewer connection in such cases when rooms are concerned in which plastic floors are laid, as is generally the case in toilets, washrooms and the like.

Heretofore, these connections for different dis¬ charge units have been made by means of different connec- tions adapted for the different connection units. More¬ over, sealing against the floor covering, which generally consists of plastic, either has been non-existent or con-_' sisted of a hole of suitable size cut in the floor-coverr ing. This conventional method involves great difficulties when a room shall be re-arranged in one way or another and, therefore, discharge units other than those original¬ ly intended for the room are to be connected. The connec¬ tions also are relatively insa^'nitary due to their tendency of collecting dust and moisture in the connection to the floor. Consequently, it was practically not possible, for example, to wash toilet rooms, because the water penetrat¬ es into the joints and moves on in an undesirable manner.

The present invention has the object to eliminate the aforesaid drawbacks and to provide a sy-stem for con-** necting discharge units to sewers, which system comprises a smaller number of components than the

technique and which, besides, yields good sealing against the floor covering and eliminates dust- and moisture-collecting crevices and which, above all, prevents the propagation of moisture. This object is achieved according to the present invention, in that the sewer connection unit con¬ sists of a lower or outer member, which at the lower end can be connected to a standard sewer while an upper or inner member is adapted for insertion into the lower mem¬ ber. The inner member is adapted at its lower end to con¬ stitute a connection for the discharge unit in question, which connection alternatively can be effected by means 5 of an insert for the inner member when a reduction in di¬ mension is required. The floor covering is clamped at its mounting either between the outer member and the inner member or between the latter member and an insert there¬ for.^* Sealing is brought about by an 0-ring, which at the

10 clamping operation is positioned between the floor cover¬ ing and the outer one of the members fixing the same in a groove made for this purpose in the outer one of the members. The different members comprised can be arranged so as to substantially form at their mounting a common

15 plane, which aligns with the floor plane, and the 0-ring in the same groove can serve for mutual sealing when no floor covering is to be clamped. For fixing the inner member in the lower connection member, the latter one is provided on its inside with a hook-shaped projection,

20 about which a corresponding tooth-shaped projection from the upper or inner member can .engage. A possible insert is fixed in the same way in the inner member. It cannot be regarded sufficient to only clamp the floor covering without and O-ring between the members, because the floor

25 covering generally is heated at its mounting in order to cause it to shrink and upon its cooling, gives rise to a leakage gap, when no O-ring is provided.

It is possible by means of the invention to use the same dimension of the sewer for all desired connections,

30 and the adjustment is made in the connection unit proper. When a connection is to be exchanged against another one, a suitable tool is inserted and the inner member or mem¬ bers are broken away without causing damage on the fixed outer err lower member, whereafter a suitable inner connect-

35 ing member can be inserted.

The invention is described in greater detail in the following, with reference to the accompanying drawings,

OMPI in which Fig. 1 shows two arches including one sewer sys¬ tem according to the present invention and, respectively, one sewer system according to conventional technique, Fig. 2 is a cross-section showing in greater detail how a connection according to the invention looks when a maximum connection dimension is utilized, Fig. 3 shows the utilization of the invention when a discharge unit with a smaller outgoing dimension, for example a wash- -basin, is connected, and Fig." 4 shows a suitable water seal design.

In Fig. 1 two arches, an upper one and a lower one are shown, into the upper one of which a sewer system of such a kind has been cast that it can be built up on the basis of the invention subject matter, and of which all connections at this stage have an identical appearance. In the lower arch, however, a system of conventional type is shown which, as can be seen, results in a much greater number of different members and in greater diffi¬ culty of making sealings and connections to the floor cover- ing. For establishing the water seal function correspond¬ ing to the water seal shown in the lower arch, for example the one shown in Fig. 4 can be used.

In Fig. 2 is shown how, for example, a water-closet can be connected to the sewer system. The connection' according to the invention comprises a lower member 1 , which is cast-in in the arch and in its. turn connected to the sewer system. The upper surface of the lower mem¬ ber 1 is cast-in aligned with the cast floor. In the upper end of the lower connection member an inward facing recess extending all about is made for receiving a clamp¬ ing ring 2. Said ring is provided at its lower end with a hook-like flange 5 projecting in lateral direction and intended to engage beneath a flange-like radially inward projection- 4 on the lower member 1. When the clamping ring well has been pushed down into the lower member 1 of the connection, which lower member hereinafter is call¬ ed floor member, the ring cannot move upward out of the

OMPI WIPO lower member.

When the clamping ring 2 is being pushed down into the floor member, the floor covering 7 is clamped between said two parts. Into the floor covering a hole had been cut previously which is slightly smaller than the recess in the floor member and, respectively, the outer dimension for the clamping ring 2. The edge of the hole was there¬ after heated in order to render the covering plastic be¬ fore it is pressed down by the'clamping ring. Between the floor member 1 and the flanged-down covering an O-ring 16 is provided in a groove in the floor member 1 for effect¬ ing sealing even after the covering has been cooled and thereby shrunk.

Into the clamping ring 2, into which an 0-ring 16 has been laid in an internal groove therein, a connecting piece 3 from the water-closet can be inserted. When de¬ sired, for obtaining a smooth easy to clean transition from the floor to the connecting ^'piece of the water-closet, the clamping ring 2 can be formed in the way as indicated by dash-dotted line in Fig. 2.

In Fig. 3 is shown how th-e connection according to the invention has been provided with an intermediate piece 8, which is held in place in the floor member 1 by means of an O-ring 16, which snappingly engages with grooves facing toward each other in the intermediate piece 8 and, respectively, the floor member 1. In said intermediate piece 8 a recess for a sewer connection is provided which is identical with the one shown in Fig. 2, except for the diameter which for this connection is smaller. The clamp- ing ring here is designated by 9, the locking flanges are designated by 14 and 15, and the sealing 0-ring is designated by 17. To the clamping ring 9 a connecting conduit 0, for example to a wash-basin, can then be con¬ nected by using an O-ring 11 in conventional manner. In the same way as in Fig. 2 the clamping ring 2 clamps the floor covering 7, but in this case against the recess wall of the intermediate piece 8.

OMPI ». WIP It is, of course, imaginable within the scope of the invention to provide additional intermediate pieces, if necessary. It should also be observed that the arrangement as shown in Fig. 3 permits a certain adjustment of the po- sition for the conduit 10, due to the eccentric position of the connection in the intermediate piece, whereby the installation work can be facilitated still more.

^" It is not necessary, either, to clamp the floor cover¬ ing with the clamping ring as shown in Fig. 3, but the covering can be laid in between the intermediate piece and the floor, which implies the advantage that the floor cover¬ ing with associated sealing is not affected by an exchange of connection.

Fig. 4 shows how a water seal suitably can be design- ed so as together with the afore-described details form a sink in the floor. The water seal includes a clamping ring 21 , which internally transforms to a downward directed funnel 22, on which a lower water seal portion 24 is attach¬ ed via radial flanges 23 by means of threads. The floor covering 7 has been clamped in the same manner as in the above examples. The floor memb.er 1 further is connected to a bend 5 of conventional kind with a sealing by means of an 0-ring 26, which connection was made prior to the casting-in operation.

OMPI

Claims

PATENT CLAIMS

1. A floor connection for sewers, comprising a floor member (1) for being cast in or jointed in the floor and for connection to a sewer system, which floor member in¬ cludes an upward and inward facing recess, into which a clamping ring (2, 21, 9) can be inserted while simultane¬ ously clamping a floor- covering (7) between the clamping ring and the inner wall of the- floor member (1) in the recess, c h a r a c t e r i z e d in that the floor mem¬ ber at its upper end is intended to be substantially on the same level as the floor, and that the clamping ring is held in the recess by snapping means in a -groove in the peripheral wall of the recess, into which an 0-ring C16) can be laid for sealing between the floor covering and the floor member.

2. A connection as defined in claim 1, c h a r a c¬ t e r i z e d in that the floor member CO comprises an intermediate piece (8) , which is locked in the floor mem¬ ber (!) by means of corresponding grooves in the recess thereof and in the intermediate piece and by means of an 0-ring C16) in said groove, and that a hole with recess for a smaller clamping ring C9) is provided in said inter¬ mediate piece so that a floor covering can be clamped bet¬ ween the clamping ring C9) and the intermediate piece C8) .

3. A connection as defined in any one of the pre¬ ceding claims, c h a r a c t e r i z e d in that the snapping means consist of an inward facing circular flange C4, 14) in the floor member O, about which flange a hook-like projection C5, 15) in the clamping ring C9, 2) and extending all about the same can engage.

4. A connection as defined in any one of the preced- ^■ ing claims, c h a r a c t e r i z e d in that the clamp¬ ing ring C2.) internally can receive a pipe C3) with an 0-ring C6) laid-in in a groove for this purpose in the clamping ring C2).

OMPI IPO