FR2622666A1

FR2622666A1 - Mixing tap

Info

Publication number: FR2622666A1
Application number: FR8715151A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-11-02
Filing date: 1987-11-02
Publication date: 1989-05-05

Abstract

The present invention relates to a mixing tap including, inside a body, two pipes made from a flexible material. This tap is characterised in that it comprises a single control rod 17 parallel to the pipes 8, 9 mounted rotationally about its axis and with axial sliding between two opposite limiting positions, and means 25, 26; 35, 36; 42, 43 for coupling the control rod 17, by axial translation into one or other of its two opposite limiting positions, with one or other of the movable components 21, 31 and for converting the rotation of the control rod 17 in each coupling position, into a transverse movement of the movable component 21, 31 with which it is coupled.

Description

La pré sente invention concerne un robinet mitigeur relié à au moins deux canalisations d'alimentation. et permettent, avec un organe de commande unique. d'obtenir la fourniture séparée ou mélangée d'au moins deux liquides différents. The present invention relates to a mixing valve connected to at least two supply lines. and allow, with a single control member. obtain the separate or mixed supply of at least two different liquids.

(in connoit déjà. ainsi qu'il est décrit dans le brevet FR-A- 2 576 386 du Demandeur. un robinet mitigeur qui comporte. à l'intérieur d'un corps deux tuyaux en matière souple qui sont reliés, en amont. respectivement à deux sources de liquides de natures et/ou températures différentes et. en aval. en commun à un organe de sortie du mélange des deux liquides. Chacun de ces deux tuyaux souples est logé entre un berceau d'apui et un org-ane de pression. Le corps du robinet comporte des moyens pour déplacer séparément chaque organe de pression en direction du tuyau souple associé et en sens inverse, de manière à écraser plus ou moins chaque tuyau souple et à faire varier ainsi le débit du liquide s'écoulant dans ce tuyau.Il est ainsi possible d'obtenir, à le sortie du robinet mitigeur. un liquide ayant un débit et une température désirés. Toutefois un tel robinet mitigeur exige la prévision de deux organes de commande externes pour commander respectivement les déplacements des deux organes de pression. (already known. as described in patent FR-A-2 576 386 of the Applicant. a mixing valve which comprises, inside a body two flexible material pipes which are connected upstream. respectively to two sources of liquids of different natures and / or temperatures and downstream in common to an outlet member for mixing the two liquids Each of these two flexible pipes is housed between a support cradle and an org-ane The valve body comprises means for moving each pressure member separately in the direction of the associated flexible pipe and in the opposite direction, so as to more or less crush each flexible pipe and thus to vary the flow rate of the flowing liquid. in this pipe. It is thus possible to obtain, at the outlet of the mixing valve, a liquid having a desired flow rate and temperature. However, such a mixing valve requires the provision of two external control members to respectively control the movements of the two organ s of pressure.

La présente invention concerne des perfectionnements apportés à ce type de robinet mitigeur afin d'en simplifier la construction et la manoeuvre grâce à la prévision d'un organe de commande unique. The present invention relates to improvements made to this type of mixer tap in order to simplify its construction and maneuvering thanks to the provision of a single control member.

A cet effet ce robinet mitigeur comportant. à l'intérieur d'un corps, deux tuyaux en matière souple qui sont reliés, en amont. respectivement à deux sources de liquides de natures et/ou températures différentes et. en aval. en commun à un organe de sortie du mélange des deux liquides. For this purpose this mixing valve comprising. inside a body, two flexible material pipes which are connected upstream. respectively to two sources of liquids of different natures and / or temperatures and. downstream. in common with an outlet member for mixing the two liquids.

chacun des deux tuyaux souples s'étendant le lonq de deux berceaux d'appui superposés sur deux niveaux diff4-rents, entre ces deux berceaux et deux organes de pression mobiles situés respectivement en face de chacun des deux berceaux, les berceaux et organes de pression n'étant pas disposés de la même manière, par rapport aux deux tuyaux, sur chacun des niveaux. de telle facwon que sur un niveau les deux organes de pression, portés par une première pièce moi le transver isolement per rapport aux tuyaux, permettent d'écraser les deux tuyaux simultanément et de manière comparable. tandis que sur l'autre niveau les deux organes de pression, portés par une seconde pièce mobile. ainsi que les deux berceaux qui leurs sont associés, sont disposés de manière que l'un des tuyaux soit complètement écrasé lorsque l'autre est décompressé. la manoeuvre des organes de pression. portés par la seconde pièce mobile. permettant d'écraser progressivement l'un des tuyaux tout en libérant simultanément l'autre tuyau. est caractérisé en ce qu'il comprend une tige de commande unique parallèle aux tuyaux. montée à rotation autour de son axe et à coulissement axial entre deux positions extrêmes opposées. et des moyens pour accoupler la tige de commande, par translation axiale dans l'une oii l'autre de ses deux positions extrêmes opposées, avec l'une ou l'autre des pièces mobiles et pour transformer la rotation de la tige de commande. dans chaque position d'accouplement, en un mouvement transversal de la pièce mobile avec laquelle elle se trouve accouplée.each of the two flexible pipes extending the length of two support cradles superimposed on two different levels, between these two cradles and two movable pressure members located respectively opposite each of the two cradles, the cradles and pressure members not being arranged in the same way, with respect to the two pipes, on each of the levels. in such a way that on one level the two pressure members, carried by a first piece, transfer it in isolation from the pipes, allow the two pipes to be crushed simultaneously and in a comparable manner. while on the other level the two pressure members, carried by a second moving part. as well as the two cradles associated with them, are arranged so that one of the pipes is completely crushed when the other is decompressed. the operation of the pressure members. carried by the second moving part. allowing to progressively crush one of the pipes while simultaneously releasing the other pipe. is characterized in that it comprises a single control rod parallel to the pipes. rotatably mounted about its axis and axially sliding between two opposite extreme positions. and means for coupling the control rod, by axial translation in one or the other of its two opposite extreme positions, with one or the other of the moving parts and for transforming the rotation of the control rod. in each coupling position, in a transverse movement of the moving part with which it is coupled.

Suivant une caractéristique complémentaire de l'in- vention la tige de commande unique traverse deux trous alignés percés respectivement de part en part dans les deux pièces mobiles et cette tige de commande porte deux dentures espacées axialement et suceptibles de venir respectivement en prise, dans chacune des deux positions extrême de la tige, avec une denture interne correspondante formée respectivement dans les trous percés dans les pièces mobiles. According to a complementary feature of the invention, the single control rod passes through two aligned holes drilled respectively right through in the two movable parts and this control rod has two axially spaced teeth which are liable to come into engagement in each, respectively. of the two extreme positions of the rod, with a corresponding internal toothing formed respectively in the holes drilled in the moving parts.

Pour favoriser l'accouplement de la tige de commande avec chacune des pièces mobiles, chaque denture de la tige de commande a avantageusement une forme tronconique, de même que la denture interne formée dans chaque trou des pièces mobiles. To favor the coupling of the control rod with each of the moving parts, each toothing of the control rod advantageously has a frustoconical shape, as does the internal toothing formed in each hole of the mobile parts.

Le robinet mitigeur suivant l'invention offre l'avantage que l'on utilise pour sa construction un minimum de pièces mécaniques dont aucune n'est en contact avec les liquides véhiculés et dont les éléments constitutifs sont normalisés, d'ou une réduction sensible du prix de revient et du prix d'entretien. Il ne nécessite la disposition d'aucun joint associé aux parties actives si bien qu'il assure un débit constant même pour une faible ouverture et par ailleurs l'obturation par écrasement d'un tuyau souple rend le système anti-colmatant et lui donne un caractère insonore. Le corps du robinet étant de dimension réduite, il peut être couvert par une coque indépendante des organes de commande aux effets esthétiques variés. The mixing valve according to the invention offers the advantage that a minimum of mechanical parts are used for its construction, none of which is in contact with the liquids carried and whose constituent elements are standardized, hence a significant reduction in the cost price and maintenance price. It does not require the provision of any joint associated with the active parts so that it ensures a constant flow even for a small opening and moreover the obturation by crushing of a flexible pipe makes the system anti-clogging and gives it a soundproof character. The valve body being of reduced size, it can be covered by a shell independent of the control members with various aesthetic effects.

fln décrira ci-après,à titre d'exemple non limitatif, une forme d'exécution de la présente invention,en référence au dessin annexé sur lequel
La figure 1 est une vue en coupe axiale et verticale d'un robinet mitigeur suivant l'invention.fln will describe below, by way of nonlimiting example, an embodiment of the present invention, with reference to the accompanying drawing in which
Figure 1 is an axial and vertical sectional view of a mixing valve according to the invention.

La figure 2 est une vue -en coupe horizontale faite suivant la ligne II-II de la figure 1. la tige de commande étant supposée accouplée la pièce mobile du bloc régulateur de débit. Figure 2 is a horizontal sectional view taken along line II-II of Figure 1. the control rod being assumed to be coupled to the moving part of the flow regulator block.

La figure 3 est une vue en coupe horizontale faite suivant la ligne III-III de la figure 1, la tige de commande étant accouplée à la pièce mobile du- bloc mitigeur. Figure 3 is a horizontal sectional view taken along line III-III of Figure 1, the control rod being coupled to the movable part of the mixer tap.

Le corps du robinet mitigeur suivant l'invention représenté sur la figure 1 est constitué par quatre blocs superposés 1,2,3,4, de même section droite horizontale. de forme parallélépipédique ou cubique. Ces quatres blocs sont accolés par leurs faces horizontales et ils sont maintenus assemblés par quatre boulons disposés dans les quatre angles et les traversant de part en part. Le bloc supérieur 1 est situé juste en dessous de la partie supérieure 5 d'un appareil sanitaire tel qu'un lavabo et il est fixé à cette face 5 au moyen d'une douille filetée 6, solidaire de la face horizontale supérieure du bloc 1 et qui s'étend à travers un trou de même diamètre percé dans la face supérieure 5 du lavabo. Au-dessus de cette face 5 un écrou 7 est vissé sur la douille filetée 6 pour fixer l'ensemble du robinet à la face supérieure 5 du lavabo. The body of the mixing valve according to the invention shown in Figure 1 consists of four superimposed blocks 1,2,3,4, of the same horizontal cross section. of parallelepiped or cubic shape. These four blocks are joined by their horizontal faces and they are held together by four bolts arranged in the four angles and crossing them right through. The upper block 1 is located just below the upper part 5 of a sanitary appliance such as a sink and it is fixed to this face 5 by means of a threaded sleeve 6, integral with the upper horizontal face of the block 1 and which extends through a hole of the same diameter drilled in the upper face 5 of the sink. Above this face 5 a nut 7 is screwed onto the threaded sleeve 6 to fix the tap assembly to the upper face 5 of the sink.

Les trois blocs 2,3,4 sont traversés de part en part verticalement par deux tuyaux souples 8,9 reliés respectivement en amont à deux sources de liquides de natures et/ou températures différentes. The three blocks 2,3,4 are traversed right through vertically by two flexible pipes 8,9 connected respectively upstream to two sources of liquids of different natures and / or temperatures.

Le bloc de sortie supérieur 1 qui sert de chambre de mélange, comporte à sa base, c' est-è-dire dans se face inférieure, deux tubes d'entrée 10,11 sur lesquels sont fixées les extrémités supérieures des deux tuyaux 8,9 maintenues par des colliers respectifs 12,13. La sortie du mélange des liquides peut se faire par un ou deux trous de sortie 14,15, percés dans la paroi latérale verticale du bloc 1 et sur lesquels on peut fixer un tuyau souple ou une tuyauterie rigide. Dans sa partie centrale le bloc supérieur 1 comporte une partie tubulaire 16 formant douille de guidage pour une tige de commande 17 s'étendant verticalement à travers le corps du robinet et pouvant coulisser axialement, c'est-à-dire verticalement entre deux positions extrêmes supérieure et inférieure. The upper outlet block 1 which serves as a mixing chamber, comprises at its base, that is to say in its lower face, two inlet tubes 10,11 on which the upper ends of the two pipes 8 are fixed, 9 held by respective collars 12,13. The outlet of the mixture of liquids can be done by one or two outlet holes 14, 15, drilled in the vertical side wall of the block 1 and on which a flexible pipe or a rigid pipe can be fixed. In its central part, the upper block 1 comprises a tubular part 16 forming a guide sleeve for a control rod 17 extending vertically through the body of the valve and capable of sliding axially, that is to say vertically between two extreme positions upper and lower.

Le bloc 2 qui est situé immédiatement en-dessous du bloc supérieur 1 constitue un bloc régulateur de débit. Ce bloc comprend une ossature 18 qui contient deux berceaux d'appui 19,20 respectivement pour le passage des deux tuyaux souples et élastiques 8,9. Une première pièce 21 est montée mobile horizontalement, c'est-à-dire transversalement, dans l'ossature 18 du bloc 2. Cette première pièce mobile 21, sensiblement en forme de T, comprend deux bras 21a,21b qui sont situés dans le prolongement l'un de l'autre et qui portent respectivement du même côté, des organes de pression 22,23. Ces organes de pressions, du type bossage arrondi, sont dirigés vers les deux tuyaux 8,9 qui se trouvent ainsi situés respectivement entre les berceaux d'appui 19,20 et les organes de pression respectifs 22,23. La première pièce mobile 21 est percée verticalement de part en part, dans se partie centrale 21c perpendiculaire aux deux bras 21a,21b, d'une lumière 24 qui est allongée dans la direction tran-sversale, c'est-à-dire perpendiculaire au plan des deux tuyaux 8,9. La tige de commande 17 s'étend verticalement à travers la lumière 24 et elle porte, sur sa surface latérale, une denture 25 qui est susceptible de venir en prise avec une denture interne correspondante 26 formée sur l'une des faces de la lumière 24, lorsque la tige de commande 17 se trouve dans sa position extrême supérieure.De préférence les deux dentures 25,26 ont une forme conique convergeant vers le haut. Par conséquent lorsque la tige 17 est soulevée dans sa position extrême supérieure, il est possible, du fait que les dentures 25 et 26 sont en prise, de provoquer un mouvement de déplacement transversal en translation de la première pièce mobile 21, dans un plan horizontal, si on fait tourner la tige de commande 17 autour de son axe. Par ce mouvement de translation les organes de pression 22,23 sont plus. ou moins rapprochés des tuyaux respectifs 8,9, ce qui provoque. un écrasement plus ou moins important de ces tuyaux. On peut ainsi régler le débit désiré par rotation de la tige de commande 17 en position extrême supérieure.Pour éviter le retour en arrière de la pièce mobile interne 21 par suite de la réaction élastique des tuyaux 8,9, une bague de frottement 27 est de préférence interposée entre la partie centrale 21c de la pièce mobile 21 qui est engagée dans un logement correspondant 18a de l'ossature 18, et la paroi de ce logement. Block 2 which is located immediately below the upper block 1 constitutes a flow regulator block. This block comprises a frame 18 which contains two support cradles 19,20 respectively for the passage of the two flexible and elastic pipes 8,9. A first part 21 is mounted movable horizontally, that is to say transversely, in the framework 18 of the block 2. This first movable part 21, substantially in the shape of a T, comprises two arms 21a, 21b which are located in the extension of one another and which bear respectively on the same side, pressure members 22,23. These pressure members, of the rounded boss type, are directed towards the two pipes 8, 9 which are thus located respectively between the support cradles 19, 20 and the respective pressure members 22, 23. The first movable part 21 is pierced vertically right through, in its central part 21c perpendicular to the two arms 21a, 21b, of a lumen 24 which is elongated in the transverse direction, that is to say perpendicular to the plan of the two pipes 8.9. The control rod 17 extends vertically through the lumen 24 and it carries, on its lateral surface, a toothing 25 which is capable of engaging with a corresponding internal toothing 26 formed on one of the faces of the lumen 24 , when the control rod 17 is in its extreme upper position. Preferably the two teeth 25, 26 have a conical shape converging upwards. Consequently, when the rod 17 is raised in its extreme upper position, it is possible, because the teeth 25 and 26 are engaged, to cause a movement of transverse displacement in translation of the first movable part 21, in a horizontal plane. , if the control rod 17 is rotated about its axis. By this translational movement, the pressure members 22, 23 are more. or less close to the respective pipes 8.9, which causes. a more or less significant crushing of these pipes. We can thus adjust the desired flow rate by rotation of the control rod 17 in the upper extreme position. To avoid the backward movement of the internal moving part 21 as a result of the elastic reaction of the pipes 8, 9, a friction ring 27 is preferably interposed between the central part 21c of the movable part 21 which is engaged in a corresponding housing 18a of the frame 18, and the wall of this housing.

Le troisième bloc 3 qui est situé immédiatement en dessous du bloc régulateur de débit 2, constitue un bloc mitigeur. il comprend une ossature 28 qui contient deux berceaux d'appui 29,30 respectivement pour les deux tuyaux 8,9. Dans l'ossature 28 est logée à coulissement horizontal, c'est-à-dire transversal, une seconde pièce mobile 31 qui comporte deux bras 31a,31b situés de'façon alternée aux deux extrémités avant et arrière de la pièce mobile 31, ces deux bras portant respectivement des organes de pressions 32,33. Cette seconde pièce mobile 31 est percée verticalement de part en part, dans sa partie centrale 31c perpendiculaire aux deux bras 31a,31b, d'une lumière 34 qui est allongée dans la direction transversale, c'est-à-dire perpendiculaire au plan des deux tuyaux 8,9.La tige de commande 17 s'étend verticalement à travers la lumière 34 et elle porte, sur sa surface latérale, une denture 35 qui est susceptible de venir en prise avec une denture interne cqrrespondante 36 formée sur l'une des faces de la lumière 34, lorsque la tige de commande 17 se trouve dans sa position extrême inférieure. De préférence les deux dentures 35.36 ont une forme conique convergeant vers le bas. Par conséquent lorsque la tige 17 est abaissée dans sa position extrême inférieure, il est possible, du fait que les dentures 35 et 36 sont en prise, de provoquer un mouvement de déplacement transversal en translation de la seconde pièce mobile 31, dans un plan horizontal, si on fait tourner la tige de commande 17 autour de son axe.Par ce mouvement de translation les organes de pression 32,33 sont plus ou moins rapprochés des tuyaux respectifs 8,9, ce qui provoque un écrasement progressif plus ou moins important de l'un des tuyaux et l'ouverture progressive de l'autre tuyau. On peut ainsi régler, par rotation de la tige de commande 17 en position extrême inférieure, les pourcentages respectifs désirés des deux fluides dans le mélange sortant du robinet. Pour éviter le retour en arrière de la pièce mobile interne 31 par suite de la réaction élastique des tuyaux 8,9, une bague de frottement 37 est de préférence interposée entre l'un des bras 31a de la pièce mobile 21 qui est engagée dans un logement correspondant 28a de l'ossature 28, et la paroi de ce logement. The third block 3 which is located immediately below the flow regulator block 2, constitutes a mixer block. it comprises a frame 28 which contains two support cradles 29.30 respectively for the two pipes 8.9. In the frame 28 is housed in horizontal sliding, that is to say transversely, a second movable part 31 which comprises two arms 31a, 31b situated in alternate fashion at the two front and rear ends of the movable part 31, these two arms respectively carrying pressure members 32.33. This second movable part 31 is pierced vertically right through, in its central part 31c perpendicular to the two arms 31a, 31b, with a lumen 34 which is elongated in the transverse direction, that is to say perpendicular to the plane of the two pipes 8, 9. The control rod 17 extends vertically through the lumen 34 and it carries, on its lateral surface, a toothing 35 which is capable of engaging with a corresponding internal toothing 36 formed on one faces of the light 34, when the control rod 17 is in its lower extreme position. Preferably, the two teeth 35.36 have a conical shape converging downwards. Consequently, when the rod 17 is lowered into its lower extreme position, it is possible, because the teeth 35 and 36 are engaged, to cause a movement of transverse displacement in translation of the second moving part 31, in a horizontal plane. , if the control rod 17 is rotated about its axis. By this translational movement the pressure members 32,33 are more or less close to the respective pipes 8,9, which causes a more or less significant progressive crushing of one of the pipes and the progressive opening of the other pipe. It is thus possible, by rotation of the control rod 17 to the extreme lower position, the respective desired percentages of the two fluids in the mixture leaving the tap. To avoid the backward movement of the internal moving part 31 as a result of the elastic reaction of the pipes 8, 9, a friction ring 37 is preferably interposed between one of the arms 31a of the moving part 21 which is engaged in a corresponding housing 28a of the frame 28, and the wall of this housing.

Enfin le quatrième bloc ou bloc inférieur 4 comprend une ossature 38 qui est traversée verticalement par les deux tuyaux 8,9 et qui présente, dans sa partie centrale, une douille de guidage 39, s'étendant vers le haut et dans laquelle est engagée la partie extrême inférieure de la tige de commande 17. Cette partie extrême de la tige 17 appuie sur un ressort de compression 41 logé dans la douille de guidage 39 et qui tend à repousser la tige.de commande 17 vers le haut. Finally, the fourth block or lower block 4 comprises a frame 38 which is traversed vertically by the two pipes 8, 9 and which has, in its central part, a guide sleeve 39, extending upwards and in which the lower end part of the control rod 17. This end part of the rod 17 presses on a compression spring 41 housed in the guide sleeve 39 and which tends to push the control rod 17 upwards.

Le mouvement de coulissement vertical de la tige de commande 17 et de rotation de cette tige autour de son axe peut être obtenu au moyen d'un dispositif 42, de tout type connu, par exemple constitué par une articulation du type à cardan qui est logée à l'intérieur de la douille filetée 6 du bloc supérieur 1. Ce dispositif 42 est accouplé à un levier de manoeuvre 43 qui permet à la fois de soulever ou d'abaisser la tige de commande 17 et de la faire tourner autour de son axe. The vertical sliding movement of the control rod 17 and of rotation of this rod around its axis can be obtained by means of a device 42, of any known type, for example constituted by an articulation of the cardan type which is housed inside the threaded sleeve 6 of the upper block 1. This device 42 is coupled to an operating lever 43 which makes it possible both to raise or lower the control rod 17 and to rotate it around its axis .

Claims

- CLAIMS

1.- Mixing valve comprising, inside a body, two flexible material pipes which are connected, upstream, respectively to two sources of liquids of different natures and / or temperatures and, downstream. in common with an outlet member for the mixture of the two liquids, each of the two flexible pipes extending along two support cradles superimposed on two different levels, between these two cradles and two movable pressure members situated respectively opposite each of the two cradles, the cradles and pressure members not being arranged in the same way, with respect to the two pipes, on each level, so that on one level the two pressure members, carried by a first part movable transversely to the pipes, allow the two pipes to be crushed simultaneously and in a comparable manner, while on the other level the two pressure members, carried by a second movable part, as well as the two cradles which are associated with them, are arranged so that one of the pipes is completely crushed when the other is decompressed, the operation of the pressure members, carried by the second moving part, making it possible to crush progress ive one of the pipes while simultaneously releasing the other pipe, characterized in that it comprises a single control rod (17) parallel to the pipes (8, 9), mounted to rotate about its axis and to slide axially between two opposite extreme positions, and means (25,26; 35,36 ;; 42,43) for coupling the control rod (17), by axial translation in one or the other of its two opposite extreme positions, with one or other of the moving parts (21,31) and to transform the rotation of the control rod (17), in each coupling position, into a transverse movement of the moving part (21,31) with which she is mated.

2.- Mixing valve according to soum4cation 1 characterized in that the single control rod (17) passes through two aligned holes (23,24) drilled right through in the two moving parts (21,31) and it controls door two teeth (25,35) axially spaced and.

likely to come into engagement respectively, in each of the two extreme positions of the rod (17), with a corresponding internal toothing (26,36) formed respectively in the holes (24,34) drilled in the moving parts.

3.- Mixing valve according to claim 2 characterized in that each toothing (25,35) of the control rod (17) has a frustoconical shape, as does the internal toothing (26,36) formed in each hole (24, 34) moving parts (21,31).

4. Mixer tap according to claim 3 characterized in that the two teeth (25,35) have conical shapes converging in opposite directions.

5. Mixer tap according to any one of the preceding claims, characterized in that its body consists of four superimposed blocks 1,2,3,4, of the same horizontal cross section, of rectangular or cubic shape, these four blocks being joined by their horizontal faces and being kept assembled by four bolts passing right through.

6. Mixer tap according to claim 5 characterized in that the upper block (1) is located just below the upper face (5) of a sanitary appliance such as a sink and it is fixed to this face (5 ) by means of a threaded sleeve (6), integral with the upper horizontal face of the block (1) and which extends through a hole of the same diameter drilled in the upper face (5) of the sink and above this face (5) a nut (7) is screwed onto the threaded sleeve (6) to fix the tap assembly to the upper face (5) of the sink, it is provided with members (6,7) for its fixing in a hole in a sanitary appliance and it carries a coupling device (42) between the control rod (17) an operating lever (43) which makes it possible both to raise or lower the control rod ( 17) and rotate it around its axis.

7. Mixer tap according to any one of claims 5 and 6 characterized in that one of the blocks (2), located below the upper block (1), constitutes a flow regulator block and it comprises a framework (18) which contains two support cradles (19,20) respectively for the passage of the two flexible and elastic pipes (8,9), a first movable part (21), substantially T-shaped, comprising two arms (21a , 21b) which are located in the extension of one another and which carry respectively on the same side, pressure members (22,23) directed towards the two pipes (8,9) which are located respectively between support cradles (19,20) and the respective pressure members (22,23), this first movable part (21) being pierced vertically right through, in its central part (21c) perpendicular to the two arms (21a, 21b), a light (24) through which the control rod (17) extends vertically.

8. Mixer tap according to any one of claims 5 to 7 characterized in that one of the blocks constitutes a mixer block and it comprises a frame (28) which contains two support cradles (29,30) respectively for the two pipes (8, 9), a second movable part (31) which comprises two arms (31a, 31b) located alternately at the two front and rear ends of the movable part (31), these two arms respectively carrying members pressure (32,33), this second movable part (31) being pierced vertically right through, in its central part (31c) perpendicular to the two arms (31a, 31b), a light (34) through which the control rod (17) extends vertically.

9. Mixer tap according to any one of claims 5 to 8 characterized in that the lower block (4) comprises a frame (38) which is traversed vertically by the two pipes (8,9) and which has, in its central part, a guide sleeve (39), extending upwards and in which is engaged the lower end part of the control rod (17), this end part of the rod (17) taking support on a spring compression (41) housed in the guide sleeve (39) and which tends to push the control rod (17) upwards.