Water seal for floor drains

Description

[0001] The present invention relates to a water seal for floor drains according to the preamble of claim 1.

[0002] Water seals of the abovementioned type are previously known from e.g. SE 506 407 or DE 4 437 873. At these prior art water seals, the cup-shaped member includes a screw-type portion which is screwed into a nut-like portion of the tubular member. The purpose of this construction is to screw the cup-shaped member upwards towards a seat on the tubular member for closing the water seal. This construction does not permit any quick connection of the cup-shaped and tubular members to each other in a fixed and permanent relation to each other.

[0003] The publication SE 469 637 illustrates an example of water seals wherein the cup-shaped members and the tubular members are eccentrically mounted relative to each other. At these water seals the cup-shaped member as well as the tubular member lack mounting members provided inside said members and the cup-shaped member has instead outer mounting members for mounting thereof in a suitable location. Such outer positioning or provision of the mounting members of the cup-shaped member is however disadvantageous when the cup-shaped and tubular members are centered relative to each other.

[0004] The object of the present invention is to eliminate these and other drawbacks at the abovementioned water seals and this is achieved by the water seal as described in claim 1.

[0005] The water seal according to the present invention comprises cup-shaped and tubular members that can be quickly connected to each other in a fixed and permanent position relative to each other and by means of mounting members provided inside said cup-shaped and tubular members.

[0006] The invention will be further described below with reference to the accompanying drawings, wherein

fig. 1 is a vertical section of a water seal having a device according to the invention;

fig. 2 is a vertical section of a tubular member of the water seal according to fig. 1;

fig. 3 is a vertical section of a cup-shaped member of the water seal according to fig. 1; and

figs. 4-6 are vertical sections of members of the water seal according to fig. 1 in different positions relative to each other during assembly and disassembly.

[0007] The water seal 1 illustrated in the drawings is intended for location in a floor drain 2 or similar in order to define a so called odour lock therein, i.e. for preventing odours from finding their way up through the floor drain 2. The water seal 1 includes a tubular member 3 and a cup-shaped member 4. Externally on the tubular member 3 there is provided a retaining and sealing ring 5 or similar for sealingly fixing said tubular member 3 to the floor drain 2.

[0008] The water-seal function is achieved in a known manner while the tubular member 3 extends down into the cup-shaped member 4 and while the water level in said cup-shaped member 4 is located above a lower edge of the tubular member 3.

[0009] The tubular and cup-shaped members 3, 4 are attached to each other by means of coupling members 6 and 7 respectively, provided centrally or substantially centrally in the tubular member 3 and in the cup-shaped member 4 respectively, such that said tubular and cup-shaped members 3, 4 are set in centered or substantially centered positions relative to each other. At the embodiment shown, this is illustrated by the centered location of the tubular and cup-shaped members 3, 4 relative to the vertically oriented centre line CL.

[0010] The coupling member 6 of the tubular member 3 is tubular and is directed axially relative to said tubular member 3. This tubular coupling member 6 is provided on one or more blade-like brackets 8 which extend in radial direction to wall portions 9 of the tubular member 3 and in axial direction along at least the major part of said wall portions 9. Lower portions 10 of the tubular coupling member 6 have a diameter D1 which is less than the diameter D2 of upper portions 11 thereof. A transition edge 12 between said lower and upper portions 10, 11 defines a coupling portion K1 with radially directed coupling surfaces for connecting the coupling members 7 of the cup-shaped member 4 to the tubular coupling member 6.

[0011] The coupling member 7 of the cup-shaped member 4 has a cylindrical pin 16 with two axially directed tongues 13, 14 which are defined by the pin 16 on opposite sides of an axially directed slit 15 in said pin 16. The diameter D3 of lower portions 17 of this pin 16 is adapted to the diameter D1 of the lower portions 10 of the coupling member 6 such that no unacceptable play arises in radial direction between said pin 16 and the tubular coupling member 6. Beneath the lower portions 17 of the pin 16 there is provided a radially directed edge 18 and upper portions 19 of the pin 16 have a larger diameter D4 than the diameter D3 of the lower portions 17 and said diameter D1 of the lower portions 10 of the tubular coupling member 6.

[0012] Due to the location of the slit 15, said upper portions 19 will be divided in two coupling portions K2 and K3, of which one coupling portion K2 forms part of the tongue 13 and the other coupling portion K3 forms part of the tongue 14. A radially directed transition edge 20 between the lower portions 17 and the upper portions 19 is defined by the pin 16 having a radially directed transition-edge portion 21 on one tongue 13 and a radially directed transition-edge portion 22 on the other tongue 14. Said transition-edge portions 21, 22 define the coupling surfaces of the coupling member 7, adapted to cooperate with corresponding coupling surfaces on the coupling member 6 defined by the transition edge 12.

[0013] The length L of said lower portions 17 of the pin 16 is adapted to the corresponding length of the lower portions 10 of the tubular coupling member 6 such that no unacceptable play in axial direction arises between said lower portions 17 and 10.

[0014] The upper portions 19 of the pin 16 are formed into a tip or point which by the slit 15 is divided in two parts, namely one part on each tongue 13, 14.

[0015] Since the pin 16 is made of resilient material, preferably plastic material, the tongues 13, 14 have resilient properties such that they from starting positions during loading in radial direction towards each other can be brought to spring in radial direction towards each other, and when said loading ceases, the tongues 13, 14 automatically spring back in radial direction from each other in order to resume their starting positions. Since the tongues 13, 14 have said elastic properties, they can be inserted into the lower portions 10 of the coupling member 6 and since these lower portions 10 have a less diameter D1 than the upper portions 19 of the pin, said tongues 13, 14 are brought to spring in radial direction towards each other such that there is room therefor in said lower portions 10. Then the coupling portions K2, K3 of the tongues 13, 14 pass the transition edge 12, i.e. the coupling portion K1, and are situated in the upper portions 11 having the larger diameter D2, the tongues 13, 14 can spring back in radial direction from each other and resume their original positions. Hereby, the coupling portions K2, K3 of the tongues will be set in coupling positions relative to the coupling portion K1 such that the tubular and cup-shaped members 3, 4 are connected to each other.

[0016] To enable disassembly or release of the tubular and cup-shaped members 3, 4 from each other, said members may be rotatable relative to each other about the centre line CL and there may be means 23, 24 which during this rotation press the tongues 13, 14 in radial direction towards each other until their coupling portions K2, K3 are in such positions relative to the coupling portion K1 and relative to the lower portions 17 that they are brought out of the engagement with said coupling portion K1 and withdrawn from said lower portions 17.

[0017] Said means 23, 24 may be guide portions at the coupling portion K1 and the coupling portions K2, K3 of the tongues 13, 14 may be brought to cooperate with these guide portions during said rotation in 90° such that said guide portions cause the coupling portions K2, K3 to leave their cooperation with the coupling portion K1. There may be two guide portions 23, 24 displaced about 180° relative to each other and each such guide portion 23, 24 can be defined by a radially inwards extending portion which is provided above and covers a part of the transition edge 12 and which down below is as wide as said transition edge 12 and directed obliquely upwards/ /outwards towards the wall of the upper portions 11 above said transition edge 12.

[0018] The water seal 1 may include a plug 25 for covering the coupling portions K1, K2, K3 and it may include a handle 26 for facilitating removal thereof from the floor drain 2. The handle 26 is shown in an upper position for said removal, but it can be let down for being out of the way.

[0019] The invention is not limited to what is described above and illustrated in the drawings, but may vary within the scope of the following claims.

[0020] The coupling portions K1, K2 and K3 may be designed and provided in other ways than shown and described. The various members of the water seal 1 may be made of plastic or metallic material.

Claims

1. Water seal (1) for floor drains (2), said water seal including a tubular member (3) and a cup-shaped member (4),
wherein said tubular member (3) comprises means (5) for mounting thereof in the floor drain (2),
wherein said tubular member (3) extends downwards into the cup-shaped member (4),
wherein said tubular member (3) further comprises a coupling member (6) located centrally therein and said cup-shaped member (4) a coupling member (7) located centrally therein, and
wherein said tubular and cup-shaped members (3, 4) are provided at each other by means of said coupling members (6, 7) and located in centred positions relative to each other,
characterized in that
the coupling member (7) of the cup-shaped member (4) includes two tongues (13, 14) which are directed axially relative to said cup-shaped member and which have resilient properties in radial direction;
the tongues (13, 14) have radially outwards directed coupling portions (K2, K3);
the tongues (13, 14) and the radially outwards directed coupling portions (K2, K3) are provided to spring in radial direction inwards towards each other when they are inserted into the coupling member (6) of the tubular member (3), said coupling member (6) having a tubular shape;
the tongues (13, 14) are provided to spring back when the coupling portions (K2, K3) thereof pass beyond at least one radially inwards directed coupling portion (K1) on the tubular coupling member (6), such that the coupling members (6, 7) of the tubular member (3) and the cup-shaped member (4), in cooperation with each other, connect said tubular and cup-shaped members (3, 4) to each other;
the tubular and cup-shaped members (3, 4) are rotatable relative to each other, and in that
means (23, 24) are provided on the tubular member (3) in order to, during said rotation relative to each other, bring the coupling portions (K2, K3) of the tongues (13, 14) out of the engagement or cooperation with the coupling portion (K1) of the tubular coupling member (6) such that said tubular and cup-shaped members (3, 4) can be released from each other.

2. Water seal (1) according to claim 1, characterized in that said means are guide portions (23, 24) which during rotation of the tubular and cup-shaped members (3, 4) relative to each other guide the coupling portions (K2, K3) of the tongues (13, 14) in a radial direction inwards such that said tongues (13, 14) are brought to spring radially towards each other until the coupling portions (K2, K3) thereof are situated radially within the coupling portion (K1) of the tubular coupling member (6).

3. Water seal (1) according to claim 2, characterized in
that the tubular coupling member (6) of the tubular member (3) comprises a radially directed transition edge (12),
that the guide portions (23, 24) are directed radially inwards and cover the transition edge (12) at two points and are provided at an angle of about 180° relative to each other, and
that the coupling portions (K2, K3) of the cup-shaped member (4) come in contact with said guide portions during a relative rotation of about 90° between the tubular and cup-shaped members (3, 4).

Ansprüche

1. Geruchsverschluss (1) für Bodenabläufe (2), umfassend ein röhrenförmiges Element (3) und ein tassenförmiges Element (4),

- wobei das röhrenförmige Element (3) Mittel (5) zur Befestigung im Bodenablauf (2) umfasst,

- wobei sich das röhrenförmige Element (3) abwärts in das tassenförmige Element (4) hinein erstreckt,

- wobei das röhrenförmige Element (3) ein mittig darin angeordnetes Verbindungselement (6) umfasst und wobei das tassenförmige Element (4) ein mittig darin angeordnetes Verbindungselement (7) umfasst, und

- wobei das röhrenförmige und das tassenförmige Element (3, 4) mittels der Verbindungselemente (6, 7) aneinander befestigt und im aneinander befestigten Zustand relativ zueinander zentriert ausgerichtet sind,

dadurch gekennzeichnet, dass

- das Verbindungselement (7) des tassenförmigen Elements (4) zwei Zungen (13, 14) aufweist, die in axialer Richtung zum tassenförmigen Element (4) orientiert sind und die in radialer Richtung elastisch ausgebildet sind;

- die Zungen (13, 14) radial nach außen gerichtete Hinterschnitte (K2, K3) aufweisen;

- die Zungen (13,14) und die radial nach außen gerichteten Hinterschnitte (K2, K3) ausgebildet sind, beim Einsetzen in das Verbindungselement (6) des röhrenförmigen Elements (3) in radialer Richtung nach innen zu federn, wobei das Verbindungselement (6) eine hohlzylindrische Gestalt aufweist;

- die Zungen (13, 14) ausgebildet sind, beim Bewegen ihrer Hinterschnitte (K2,K3) über mindestens einen am hohlzylindrischen Verbindungselement (6) ausgebildeten Hinterschnitt (K1) hinweg zurückzufedern zum Verbinden des röhrenförmigen Elements (3) und des tassenförmigen Elements (4) miteinander über ihre Verbindungselemente (6,7);

- das röhrenförmige und das tassenförmige Element (3, 4) relativ zueinander verdrehbar sind; und dass

- auf dem röhrenförmigen Element (3) Mittel (23, 24) vorgesehen sind, um beim Verdrehen des tassenförmigen und des röhrenförmigen Elements (3,4) gegeneinander den Eingriff der Hinterschnitte (K2,K3) mit dem an den Zungen (13,14) angeordneten Hinterschnitt (K1) des hohlzylindrischen Verbindungselements (6) zu lösen zum Lösen der Befestigung zwischen dem röhrenförmigen und dem tassenförmigen Element (3,4).

2. Geruchsverschluss (1) nach Anspruch 1, dadurch gekennzeichnet, dass die vorgenannten Mittel Führungsabschnitte (23, 24) sind, die beim Verdrehen des röhrenförmigen und des tassenförmigen Elements (3, 4) gegeneinander die Hinterschnitte (K2, K3) der Zungen (13, 14) in radialer Richtung nach innen bewegen, derart, dass die Zungen (13, 14) radial aufeinander zu federn, bis sich ihre Hinterschnitte (K2, K3) radial innerhalb des Hinterschnitts (K1) des hohlzylindrischen Verbindungselements (6) befinden.

3. Geruchsverschluss (1) nach Anspruch 2, dadurch gekennzeichnet,

- dass das hohlzylindrische Verbindungselement (6) des röhrenförmigen Elements (3) eine radial orientierte Stufe (12) aufweist,

- dass die Führungsabschnitte (23, 24) radial nach innen gerichtet sind, die Stufe (12) an zwei Punkten bedecken und in einem Winkel von etwa 180° zueinander angeordnet sind, und

- dass die Hinterschnitte (K2, K3) des tassenförmigen Elements (4) mit den Führungsabschnitten (23,24) miteinander in Kontakt kommen bei einem Verdrehen des röhrenförmigen und des tassenförmigen Elements (3, 4) gegeneinander um etwa 90.

Revendications

1. Siphon isolateur (1) pour des avaloirs de sol (2), ledit siphon isolateur englobant un membre tubulaire (3) et un membre en forme de coupelle (4),
ledit membre tubulaire (3) comprenant un moyen (5) pour son montage dans l'avaloir de sol (2),
ledit membre tubulaire (3) s'étendant vers le bas jusque dans le membre (4) en forme de coupelle,
ledit membre tubulaire (3) comprenant en outre un membre d'accouplement (6) qui y est monté en position centrale et ledit membre (4) en forme de coupelle comprenant un membre d'accouplement (7) qui y est monté en position centrale, et
ledit membre tubulaire et ledit membre en forme de coupelle (3, 4) sont amenés l'un contre l'autre au moyen desdits membres d'accouplement (6, 7) et sont disposés en position centrale l'un par rapport à l'autre,
caractérisé en ce que
le membre d'accouplement (7) du membre (4) en forme de coupelle englobe deux languettes (13, 14) qui sont orientées en direction axiale par rapport audit membre en forme de coupelle et qui possèdent des propriétés résiliente en direction radiale;
les languettes (13, 14) possèdent des portions d'accouplement (K2, K3) orientées vers l'extérieur en direction radiale;
les languettes (13, 14) et les portions d'accouplement (K2, K3) orientées vers l'extérieur en direction radiale sont prévues pour s'emboîter par déclic en direction radiale à l'intérieur l'une de l'autre lorsqu'elles sont insérées dans le membre d'accouplement (6) du membre tubulaire (3), ledit membre d'accouplement (6) possédant une configuration tubulaire;
les languettes (13, 14) sont prévues pour effectuer un retour élastique lorsque leurs portions d'accouplement (K2, K3) parviennent au-delà d'au moins une portion d'accouplement (K1) orientée vers l'intérieur en direction radiale sur le membre d'accouplement tubulaire (6), de telle sorte que les membres d'accouplement (6, 7) du membre tubulaire (3) et du membre (4) en forme de coupelle, en coopération réciproque, relient l'un à l'autre ledit membre tubulaire et ledit membre en forme de coupelle (3, 4);
le membre tubulaire et le membre en forme de coupelle (3, 4) sont rotatifs l'un par rapport à l'autre; et en ce que
des moyens (23, 24) sont prévus sur le membre tubulaire (3) dans le but, au cours de ladite rotation réciproque, d'écarter les portions d'accouplement (K2, K3) des languettes (13, 14) par rapport à la portion d'accouplement (K1) du membre d'accouplement tubulaire (6) ou bien de supprimer leur coopération avec ladite portion d'accouplement, de telle sorte que ledit membre tubulaire et ledit membre en forme de coupelle (3, 4) peuvent être libérés l'un de l'autre.

2. Siphon isolateur (1) selon la revendication 1, caractérisé en ce que lesdits moyens sont des portions de guidage (23, 24) qui, au cours de la rotation du membre tubulaire et du membre en forme de coupelle (3, 4) l'un par rapport à l'autre, guident les portions de couplage (K2, K3) des languettes (13, 14) en direction radiale vers l'intérieur, de telle sorte que lesdites languettes (13, 14) sont amenées l'une vers l'autre par déclic en direction radiale jusqu'à ce que leurs portions d'accouplement (K2, K3) viennent se disposer en position radiale au sein de la portion d'accouplement (K1) du membre d'accouplement tubulaire (6).

3. Siphon isolateur (1) selon la revendication 2, caractérisé
en ce que le membre d'accouplement tubulaire (6) du membre tubulaire (3) comprend un bord de transition (12) orienté en direction radiale,
en ce que les portions de guidage (23, 24) sont orientées vers l'intérieur en direction radiale et recouvrent le bord de transition (12) à deux endroits en formant un angle d'environ 180° l'une par rapport à l'autre, et
en ce que les portions d'accouplement (K2, K3) du membre (4) en forme de coupelle entrent en contact avec lesdites portions de guidage lors d'une rotation relative d'environ 90° entre le membre tubulaire (3) et le membre (4) en forme de coupelle.

Drawing