EP0893544A1 - Flushing device, especially for toilet bowls - Google Patents

Abstract

The cistern (8) incorporates an assembly comprising a rotary drum (1) with an inner piston (3) and an outer float (5), toggle stops (4) which act as a seat (36) for the outlet valve (2A). A graduated regulating ring (6) allows the user to set the position of the drum and control the amount of water released per flush. The cistern has a water inlet valve (10) and an outlet (16) in its base (16), controlled by a valve (2A) and handle (7).

Description

The present invention relates to a flush, with water reserve adjustable, for example and in particular for toilet bowls.

There is currently no toilet flush, for toilet bowls for example, which is capable of supplying, on each actuation, a quantity of water predetermined and adjustable in stages, this quantity of water generally being less than the entire volume of water in the tank.

• de pouvoir distribuer l'eau de manière aisément réglable, typiquement jusqu'au quart de litre près;
• d'obtenir une pression d'eau de nettoyage plus importante que celle des chasses d'eau de l'Art connu, pour un meilleur rincage de la cuvette, même avec de très petites quantités d'eau;
• de garder malgré tout de petites dimensions d'encombrement et d'être plus silencieuse que les chasse d'eau de l'Art connu, tout en utilisant des éléments d'arrivee d'eau traditionnels.

It would be desirable to have a flush of this type which would have the qualities:

• to be able to distribute the water in an easily adjustable manner, typically up to a quarter of a liter;
• to obtain a higher cleaning water pressure than that of the flushes of the known art, for better rinsing of the bowl, even with very small amounts of water;
• to keep nevertheless of small dimensions of obstruction and to be quieter than the flushes of the known Art, while using elements of traditional water inlet.

• un réservoir d'eau dont le fond possède un orifice d'évacuation brutale d'eau, par exemple vers la cuvette de WC à nettoyer, ce réservoir étant alimenté en eau par l'intermédiaire d'un robinet classiquement associé à un flotteur placé sur un bras mobile qui vient fermer ce robinet lorsque le niveau de l'eau dans ce réservoir atteind une hauteur prédéterminée;
• un clapet soulevable d'obstruction de cet orifice inférieur d'évacuation brutale d'eau;
• une tirette axiale qui traverse ce réservoir et dont l'extrémité libre inférieure est solidaire dudit clapet, son autre extrémité libre étant solidaire d'un organe de préhension qui dépasse du couvercle du réservoir et qui permet , en actionnant cette tirette, d'ouvrir brusquement ledit clapet, ce qui entraine alors une évacuation brutale d'eau vers la cuvette de WC ou autre organe à nettoyer;
  et cette chasse d'eau étant caractérisée en ce qu'elle est équipée de moyens pour n'entrainer, lorsqu'on libère ledit clapet à l'aide de la tirette, que l'évacuation brutale de seulement une portion, déterminée et ajustable par l'utilisateur, de la quantité totale de l'eau contenue dans ce réservoir.

The invention aims to meet this need. To this end, it relates to a flush, for example (although not limited to) for a toilet bowl, this flush being of the type comprising:

• a water tank, the bottom of which has an abrupt drainage outlet, for example towards the toilet bowl to be cleaned, this tank being supplied with water by means of a tap conventionally associated with a float placed on a movable arm which closes this tap when the water level in this tank reaches a predetermined height;
• a liftable valve for obstructing this lower orifice for sudden evacuation of water;
• an axial pull which crosses this tank and whose lower free end is secured to said valve, its other free end being secured to a gripping member which protrudes from the cover of the tank and which allows, by actuating this pull, to suddenly open said valve, which then causes a sudden evacuation of water to the toilet bowl or other member to be cleaned;
  and this flushing being characterized in that it is equipped with means for causing, when releasing said valve using the zipper, only the sudden evacuation of only a portion, determined and adjustable by the user, of the total amount of water contained in this tank.

• un tambour coaxial à ladite tirette , ce tambour étant bloqué en translation, mais non en rotation sur au moins un angle maximal prédéterminé, et étant muni d'une empreinte intérieure d'indexage d'un piston apte à coulisser le long de la tirette et d'une empreinte extérieure d'indexage dudit flotteur ,
• ledit piston, qui est bloqué en rotation mais non pas en translation le long de la tirette et qui est muni d'au moins un doigt d'indexage dans ladite empreine intérieure du tambour, ce piston présentant une partie tronconique qui coopère avec une partie conjuguée d'au moins une pièce d'arrêt basculante pour repousser celle-ci vers l'arrière lorsque ce piston est en position basse,
• ladite ou lesdites pièces d'arrêt basculantes qui possèdent en outre au moins une partie d'assise, telle qu'une encoche, apte à coopèrer avec une partie conjuguée du clapet pour maintenir ce clapet en position d'ouverture tant que ledit piston est au-dessus de sa position basse, ladite assise se libérant, pour faire retomber le clapet, dès que le piston regagne sa position basse et repousse alors vers l'arrière ladite ou lesdites pièces d'arrêt,
• au moins un doigt d'indexage du flotteur dans ladite empreinte externe du tambour,
• des moyens pour entraíner, avant de soulever la tirette , la rotation, d'un angle de valeur ajustable à l'aide d'une graduation, dudit cylindre et pour entraíner en conséquence, par coopération de ladite empreinte interne du tambour et dudit ou desdits doigts d'indexage du piston, la montée de ce piston d'une hauteur limitée par l'ampleur dudit angle de rotation,

   ladite empreinte externe du tambour ayant un ou des profils aptes à, par coopération avec lesdits doigts d'indexage du flotteur, entraíner, lorsque l'on soulève, après avoir donc fait tourner ledit tambour d'un angle déterminé, la tirette pour ouvrir le clapet et le faire reposer sur ladite assise, la rotation inverse du tambour du fait qu'il est alors entraíné par la descente brusque du niveau d'eau et donc du flotteur, le piston venant alors, en fin de course, relâcher l'assise du clapet, ce dernier retombant alors et arrêtant par suite l'évacuation d'eau,
   de sorte que finalement la chasse d'eau n'a évacué qu'une quantité d'eau limitée et fixée par ledit angle de rotation du cylindre,
   ladite empreinte externe présentant en outre une ou des parties rectilignes et axiales pour permettre alors au flotteur de remonter à sa position haute sans agir sur la position angulaire du tambour.According to a preferred embodiment, this flush is characterized in that it comprises:

• a drum coaxial with said pull tab, this drum being locked in translation, but not in rotation over at least a predetermined maximum angle, and being provided with an internal indexing imprint of a piston capable of sliding along the pull tab and an external index fingerprint of said float,
• said piston, which is locked in rotation but not in translation along the zipper and which is provided with at least one indexing finger in said inner recess of the drum, this piston having a frustoconical part which cooperates with a conjugate part at least one tilting stopper to push it backwards when this piston is in the low position,
• said one or more tilting stop pieces which also have at least one seat part, such as a notch, capable of cooperating with a conjugate part of the valve to hold this valve in the open position while said piston is at above its low position, said seat becoming free, to cause the valve to fall back, as soon as the piston returns to its low position and then pushes said stop piece or pieces backwards,
• at least one indexing finger of the float in said external cavity of the drum,
• means for driving, before lifting the pull tab, the rotation, by an angle of adjustable value using a scale, of said cylinder and for driving accordingly, by cooperation of said internal imprint of the drum and of said one or more piston indexing fingers, the rise of this piston from a height limited by the magnitude of said angle of rotation,

said external imprint of the drum having one or more profiles capable of, by cooperation with said indexing fingers of the float, cause, when lifting, after having therefore rotated said drum by a determined angle, the pull tab to open the valve and rest it on said seat, the reverse rotation of the drum because it is then driven by the sudden descent of the water level and therefore of the float, the piston then coming, at the end of the race, release the seat the valve, the latter then falling and consequently stopping the evacuation of water,
so that finally the flush only removed a limited amount of water and fixed by said angle of rotation of the cylinder,
said external imprint also having one or more straight and axial parts so as to allow the float to go back to its high position without acting on the angular position of the drum.

• Figure 1 est une vue en coupe, selon la direction A-A des figures 4 à 6, de cette chasse d'eau, en attente d'utilisation.
• Figure 2 est une vue semblable à Figure 1, la chasse d'eau étant en cours de fonctionnement.
• Figure 3 est une section selon B-B de Figure 1.
• Figure 4 est une coupe selon C-C de Figure 1.
• Figure 5 est une coupe selon D-D de Figure 1
• Figure 6 est une coupe selon E-E de figure 2.
• Figures 7A et 7B sont respectivement une vue d'ensemble, en coupe partielle selon F-F de Figure 7B, du tambour axial qui équipe cette chasse d'eau, et une vue en bout ,selon la direction f de Figure 7A, de ce même tambour.
• Figure 8A est une vue extérieure du tube interne, développé, qui constitue la partie interne de ce tambour
• Figure 8B est une vue de détail, en section G grossie trois fois, de Figure 8A.
• Figure 9A est une vue extérieure du tube externe, développé, qui constitue la partie externe de ce tambour.
• Figures 9B et 9C sont des vues de détail, respectivement en section G et en section J grossies trois fois, de Figure 9A.
• Figure 10A est une vue en coupe partielle longitudinale de la tirette axiale qui équipe cette chasse d'eau.
• Figures 10B, 10C, 10D, sont respectivement des coupes selon NN, OO, et PP, de Figure 10A.
• Figures 11 A et 11 B représentent, respectivement en vue de dessus et en coupe selon MM de Figure 11A, le piston mobile axialement qui équipe cette chasse d'eau.
• Figures 12A, 12B, 12C, représentent l'un des trois dispositifs basculants de blocage du clapet inférieur de cette chasse d'eau, respectivement en vue de dessus, en vue de face, et en coupe selon L-L de Figure 12B.
• Figure 13A et 13B représentent le flotteur qui équipe cette chasse d'eau, respectivement en vue de dessus et en coupe selon K-K de Figure 13A.
• Figures 14A et 14B représentent la rondelle de réglage de volume d'eau qui équipe cette chasse d'eau, respectivement en vue de dessus et en coupe selon R-R de Figure 14A.
• Figures 15A et 15B représentent le bouton de préhension qui est prévu au sommet de la tirette, respectivement en vue de dessous et en coupe selon S-S de Figure 15A.

The invention will be clearly understood, and its advantages and various characteristics will emerge more clearly from the following description of a preferred, but non-limiting example of embodiment, with reference to the appended schematic drawing in which:

• Figure 1 is a sectional view, along the direction AA of Figures 4 to 6, of this toilet flush, awaiting use.
• Figure 2 is a view similar to Figure 1, the toilet flushing during operation.
• Figure 3 is a section along BB of Figure 1.
• Figure 4 is a section along CC of Figure 1.
• Figure 5 is a section along DD of Figure 1
• Figure 6 is a section along EE of Figure 2.
• Figures 7A and 7B are respectively an overall view, in partial section along FF of Figure 7B, of the axial drum which equips this flush, and an end view, in the direction f of Figure 7A, of this same drum .
• Figure 8A is an external view of the internal tube, developed, which constitutes the internal part of this drum
• Figure 8B is a detail view, in section G magnified three times, of Figure 8A.
• Figure 9A is an external view of the external tube, developed, which constitutes the external part of this drum.
• Figures 9B and 9C are detailed views, respectively in section G and in section J magnified three times, of Figure 9A.
• Figure 10A is a partial longitudinal sectional view of the axial pull which equips this flush.
• Figures 10B, 10C, 10D, are respectively sections according to NN, OO, and PP, of Figure 10A.
• Figures 11 A and 11 B show, respectively in top view and in section along MM of Figure 11A, the axially movable piston which equips this flush.
• Figures 12A, 12B, 12C show one of the three tilting devices for blocking the lower valve of this flush, respectively in top view, in front view, and in section along LL of Figure 12B.
• Figure 13A and 13B represent the float which equips this flush, respectively in top view and in section along KK of Figure 13A.
• Figures 14A and 14B show the water volume adjustment washer which equips this flush, respectively in top view and in section according to RR of Figure 14A.
• Figures 15A and 15B show the grip button which is provided at the top of the zipper, respectively in bottom view and in section along SS of Figure 15A.

• Un réservoir d'eau, ou cuve, 8 de section rectangulaire (Figures 5 et 6), dont la partie supérieure est fermée par un couvercle amovible 11 et dont le fond 1 est percé, en son centre, d'un orifice 16 d'évacuation brutale d'eau vers le dispositif à nettoyer, en l'espèce vers la cuvette de WC dans cet exemple non-limitatif où il s'agit d'une chasse d'eau de WC.
• Un clapet 2A, muni d'un joint d'étanchéité souple et amovible 12, qui vient fermer et ouvrir l'orifice d'évacuation 16 et qui est prévu à l'extrémité inférieure d'une tirette axiale et centrale 2, cette tirette (figures 10A à 10 D) permettant, lorsqu'on la soulève par un bouton manuel, ou poignée, 7 qui dépasse classiquement de la cuve 8, de dégager le clapet 2A de son siège 17 et donc d'ouvrir l'orifice d'évacuation 16.
• Un flotteur 5 (figures 13A et 13B) classiquement placé en bout d'un bras articulé 5, dont l'autre extrémité actionne, à l'ouverture et à la fermeture, le robinet d'arrivée d'eau 10. Lorsque le flotteur 5 est en position haute, comme présenté sur la figure 1, le robinet 10 est fermé.

Referring to all the figures and in particular to Figures 1 and 2 which are an overview of this flush, the latter comprises:

• A water tank, or tank, 8 of rectangular section (Figures 5 and 6), the upper part of which is closed by a removable cover 11 and the bottom 1 of which is pierced, in its center, with an orifice 16 of sudden evacuation of water to the device to be cleaned, in this case to the toilet bowl in this non-limiting example where it is a toilet flush.
• A valve 2A, provided with a flexible and removable seal 12, which closes and opens the discharge orifice 16 and which is provided at the lower end of an axial and central pull tab 2, this pull tab ( Figures 10A to 10 D) allowing, when lifted by a manual button, or handle, 7 which conventionally protrudes from the tank 8, to release the valve 2A from its seat 17 and therefore to open the discharge orifice 16.
• A float 5 (FIGS. 13A and 13B) conventionally placed at the end of an articulated arm 5, the other end of which activates, on opening and closing, the water inlet valve 10. When the float 5 is in the high position, as shown in Figure 1, the valve 10 is closed.

The elements which have just been described alone would make it possible to to carry out a flush of practically conventional type, for which the quantity of water evacuated each time the toilet is pressed represents the all of the mass of water which is contained in the tank 8 when it is full, that is to say when the float 5 is in the high position (FIG. 1) and that by therefore the water inlet valve 10 is closed.

The present flush comprises, in accordance with the invention, additional elements, which will be described now and which allow it to not deliver, at each actuation of the zipper, only a determined portion and finely adjustable for the total mass of water contained in this tank 8.

There is provided a rotary drum 1, coaxial with the tank 8 and extending substantially over the entire height of this tank.

In this exemplary embodiment, this drum is actually composed of two concentric tubes, or ferrules, of which an internal tube 1A and an external tube 1B which are secured by an upper disc, or common cover, 18.

The outer tube 1B rests in a coaxial circular groove 19 of the bottom 15 of the tank 8, this groove serving as a lower guide in rotation for the drum 1.

To allow the free passage of water, the lower part of the tube 1B has large openings 20 (see also FIG. 7A), while the inner tube 1A, shorter than the outer tube 1B, does not completely reach bottom of tank 8.

As seen in Figures 1 and 7A, the diameter of the outer tube 1B is only slightly higher than that of the inner tube 1A, so as not to penalize the internal space of the drum 1.

At its upper part, the drum 1 rotates, inter alia, with the cylindrical upper portion 2C of the pull rod 2.

The valve 2A, and therefore the whole of the pull tab 2, is blocked in rotation by means of three radial rods 21 (see also Figures 10A and 10D) which are each respectively embedded (see in particular FIG. 6) in a slot, median and vertical, respective receiver 30 of three tilting stop pieces 4. The three stop pieces 4 are placed 120 degrees relative to each other. They can tilt backwards, with elastic return towards the front, in the vertical plane, but they are fixed in rotation in the horizontal plane. Their role and conformation will be explained below.

As is well detailed in Figures 7A and 8A, the inner tube 1A is pierced by a few helical-shaped slots 22 for guiding a piston 3 (FIG. 1), these slots 22 being (FIG. 8A) all approximately parallel to one another. the other, to the parallelism corrections (necessary to allow the close) (these are not noticeable on this kind of drawing) and inclined relative to the axis of this tube 1A. This piston 3 and its role will be explained below.

As is also well detailed in FIGS. 7A and 9A, the tube external 1B comprises, on its external surface, two identical groups 23, 24 of grooves 25 for guiding the drum 1 in rotation.

The development of these two groups 23, 24 of grooves 25 is represented in Figure 9A. These two groups of grooves each receive a pin, internal and radial, 26 and 27, for indexing the float 5 (which will itself be better described below) in the outer tube 1B of the drum 1.

As also, the float 5 comprises (FIGS. 1 and 13A) two other pins, external and radial, 28 and 29, for indexing this float in two vertical guide rails 13 provided on the inside of the tank 8 and consequently this float is fixed in rotation and mobile only in translation vertical, we can easily understand that the vertical movement of the float will have for effect, in fact only in its descent phase as will be explained below, to do the drum 1 simultaneously.

• Une rainure horizontale 25A qui permet, au départ d'une opération de chasse d'eau et comme on l'explicitera ci-après, de faire tourner manuellement, d'un angle variable ( mais determinée au choix de l'utilisateur, le cylindre 1, à l'aide du bouton de préhension 7 de la tirette 2, sans que rien d'autre ne se passe.
• Une pluralité de rainures 25B, inclinées et approximativement parallèles (aux très légères rectifications de parallèlisme prés qui sont mathématiquement bien-entendu nécessaires pour permettre le fonctionnement et qui ne sont pas perceptibles sur ce genre de dessin), qui permettent d'entraíner la rotation du tambour 1 lorsque, le niveau descendant lors de l'ouverture du clapet 2A, le flotteur 5 descend lui-aussi corrélativement.
• Une rainure verticale 25C qui permet ensuite au flotteur 5 de remonter sans entraíner le tambour 1 en rotation.

To do this, each group 23, 24 of grooves 25 comprises the following communicating grooves (FIG. 9A):

• A horizontal groove 25A which allows, at the start of a flushing operation and as will be explained below, to rotate manually, at a variable angle (but determined at the choice of the user, the cylinder 1, using the grip button 7 of the pull tab 2, without anything else happening.
• A plurality of grooves 25B, inclined and approximately parallel (with very slight rectifications of parallelism near which are of course mathematically necessary to allow operation and which are not perceptible in this kind of drawing), which allow to cause the rotation of the drum 1 when, the level falling during the opening of the valve 2A, the float 5 also descends correlatively.
• A vertical groove 25C which then allows the float 5 to rise without driving the drum 1 in rotation.

Referring now more particularly to FIGS. 1, 2, 5, 6, 11A, 11B, 12A to 12C, we will now deal with the three tilting stop pieces 4 and elements with which they cooperate, i.e. on the one hand the valve 2A and on the other hand the piston 3.

These three tilting parts 4 are fixed to the bottom 15 and are articulated on the latter around respective horizontal axes 31. They are each supported by a return spring 32 which tends to bring them forward, that is to say towards the axis 33 of the flush.

Except in their lower part, they are cut in half by a slit 30 which receives, as indicated above, the corresponding radial rod of locking of the pull tab 2 in rotation. These slots 30, which are in fact open towards the high, do not oppose the vertical lifting of this pull tab 2.

Their active part is their part, or slice, before 34, that is to say that looking towards the zipper 2.

• Une première partie 35 (figure 12C) sensiblement verticale avec toutefois une légère inclinaison, "en cône étroit et à pointe dirigée vers le haut", c'est-à-dire à inclinaison vers le bas et vers l'arrière (figures 1 et 2), qui ne s'oppose pas vraiment au soulèvement, par l'usager, du clapet 2A mais qui permet d'aider à la fermeture et au maintien en position de fermeture, de ce clapet 2A.
• Une deuxième partie 36 (figure 12C) , formant une encoche d'assise à angle droit, ou palier horizontal, qui coopère avec une encoche conjuguée 60 (figure 10A) du clapet 2A pour maintenir, selon Figure 2, le clapet 2A en position d'ouverture.
• Une troisième partie 37 (figure 12C) à inclinaison "en cône évasé à pointe dirigée vers le bas", c'est-à-dire à forte inclinaison vers le haut et vers l'arrière, qui coopère avec une partie tronconique conjugée 38 (figure 11B) du relativement lourd piston 3 pour en conséquence faire basculer la pièce d'arrêt 4 (et les deux autres) vers l'arrière à partir de la position de la figure 2 et par suite entraíner (figure 1) la libération et donc la fermeture du clapet 2A.
• Une quatième partie, sensiblement horizontale, 39 (figure 12C) sur laquelle vient finalement reposer (figure 1) le piston 3 lorsque le clapet 2A est refermé.

This active part 34 is broken down, from bottom to top, into four successive parts, the first two of which cooperate with the valve 2A to keep it in its open position and the last two of which cooperate with the piston 3 to cause the tilting towards the rear of these stop pieces 4 and consequently the release and therefore the closing of this valve 2A. Those are :

• A first part 35 (FIG. 12C) substantially vertical with, however, a slight inclination, "in a narrow cone and with an upward pointing point", that is to say with inclination downwards and backwards (FIGS. 1 and 2), which is not really opposed to the lifting, by the user, of the valve 2A but which makes it possible to assist in closing and maintaining in the closed position, this valve 2A.
• A second part 36 (FIG. 12C), forming a seat notch at a right angle, or horizontal bearing, which cooperates with a conjugate notch 60 (FIG. 10A) of the valve 2A to maintain, according to FIG. 2, the valve 2A in position d 'opening.
• A third part 37 (FIG. 12C) with an inclination "in a flared cone with a point directed downwards", that is to say with a strong inclination upwards and backwards, which cooperates with a conjugate frustoconical part 38 ( Figure 11B) of the relatively heavy piston 3 to consequently tilt the stopper 4 (and the other two) backwards from the position of Figure 2 and consequently cause (Figure 1) the release and therefore closing the valve 2A.
• A fourth, substantially horizontal, part 39 (FIG. 12C) on which the piston 3 finally comes to rest (FIG. 1) when the valve 2A is closed.

The valve 2A constitutes the lower part of the zipper 2, which will itself be described in detail below He receives, as mentioned above, the seal 12, and its upper part 40 (FIGS. 10A and 10D) forms a annular enlargement which includes the annular notch 60.

The piston 3 is a solid body (FIG. 11A and 11B) which is movable in vertical translation and sliding along the central tubular part 2B of the zipper 2 but which is immobilized in rotation by the fact that its central orifice 41, by which it slides along the tubular middle part of the pull tab 2, has two flats 42, 43 respectively conjugated with two corresponding flats 44 45 (Figure 10D) of tube 2B.

The piston 3 has, as indicated above, a part frustoconical 38 which allows it to open the three tilting stops 4. Three recesses 46 (FIG. 11A) allow free passage of water without loss of substantial charge. Three radial pins 47 are introduced into the slots inclined 22 of the tube 1A, so that the rotation, in one direction or the other, of the drum 1 causes the piston 3 to rise or fall.

• Le clapet précité 2A, avec ses trois axes 21, de blocage en rotation par rapport au tambour 1 et de centrage, de la tirette 2.
• Sa partie centrale principale 2B, qui est tubulaire, donc creuse, et ouverte en haut comme en bas pour laisser librement passer, ce qui est très classique en soi, l'eau de trop plein en cas de débordement de la cuve dû à un fonctionnement défectueux du robinet 10. Pour ce faire, l'extrémité libre supérieure (voir figure 1) du tube 2B arrive, lorsque le clapet 2A est fermé comme en figure 1, légèrement au dessus du niveau maximal normal de l'eau dans la cuve 8.
• Une partie supérieure 2C, constituée par une tige pleine, à section circulaire, dont la partie supérieure dépasse (figures 1 et 2) du couvercle 11 de la cuve 8, et dont la partie inférieure s'élargit pour former les deux dents 48, 49 d'une fourchette de maintien du tube 2B. Classiquement, ces deux dents, laissent entre elles un libre passage 50 (figure 5) pour l'eau de trop plein.

The pull tab 2 comprises, from bottom to top (FIGS. 1 and 10A to 10D):

• The aforementioned valve 2A, with its three axes 21, for blocking in rotation relative to the drum 1 and for centering, for the pull tab 2.
• Its main central part 2B, which is tubular, therefore hollow, and open at the top and at the bottom to allow free passage, which is very conventional in itself, the overflow water in the event of overflow of the tank due to operation defective valve 10. To do this, the upper free end (see Figure 1) of the tube 2B arrives, when the valve 2A is closed as in Figure 1, slightly above the maximum normal level of water in the tank 8 .
• An upper part 2C, constituted by a solid rod, of circular section, the upper part of which protrudes (FIGS. 1 and 2) from the cover 11 of the tank 8, and the lower part of which widens to form the two teeth 48, 49 a fork for holding the tube 2B. Conventionally, these two teeth leave a free passage between them 50 (FIG. 5) for the overflow water.

The rod 2C is integral with a washer 51, which has, on a portion of its circumference, a series of grooves formed by axial grooves 52, at number of eleven grooves in the example described here. Their role will be explained below.

In addition, at the top of the rod 2C, the latter is engraved with a groove semi-circular and circumferential 53 (Figures 10A and 10B).

The upper part 2C and its partially grooved washer 51, pass through a washer 6 for adjusting the volume of water, which itself passes at through the cover 11 and which is fixed to the upper flange 18 of the drum 1 by two screws 54 This washer 6 cooperates with a central orifice of the cover 11 to constitute the upper bearing level of the drum 1.

A radial pin 55 (FIG. 1) is provided in the central orifice of the washer 6. It cooperates with the grooved washer 51, in the sense that, being unable enter one of the grooves 52 (FIGS. 10B and 1) only when it is aligned vertically with it, its position in the washer 6 is adjusted so that one can therefore only lift the pull tab 2 when the two internal fingers 26, 27 (FIG. 13A) for indexing the float 5 in the external tube 1B are found respectively opposite a descending indexing groove 25B (FIG. 9A) of the outer surface of this tube.

As seen in Figures 14A and 4, the adjustment washer 6 has graduations, here from 0 to 10, which cooperate with a reference 56 of the cover 11 to adjust the volume of water discharged by the flush, for example liter per liter or even quarter liter per quarter liter.

Finally, a button, or handle, for handling 7 covers the part upper of rod 2C. A radial nipple screw 57 enters the semicircular groove 53 of the rod 2C, which blocks this gripping button 7 in translation relative to the pull tab 2. On the other hand, this groove 53 allows the button 7 to rotate freely, in total only about half a turn, from this zipper 2.

Vertical fingers 58 (Figures 2 and 15B) freely penetrate into conjugate orifices 59 (FIG. 2) of the washer 6 and of the flange 18. They make it possible to fasten in rotation but not in vertical translation, the pull tab 2 and the drum 1. Turning the button 7 will therefore cause the rotation of the washer setting 6, and therefore of cylinder 1 and it will nevertheless be possible to lift, depending on Figure 2, the button 7 and therefore the pull tab 2 and its end valve 2A.

The operation of this flush is as follows:

When the tank 8 is filled with water and the flush is on standby of use, according to Figure 1, the float 5 is in the high position, the valve 10 is closed and the valve 2A rests, by means of its seal 12, on its seat 17. The piston 3 rests on the upper part of the three stop pieces tilting 4 it maintains, due to its frustoconical profile 38 (Figure 11B) which cooperates with the conjugate ramp 37 (FIG. 12C) of each of these parts 4, tilted backwards against the restoring force of the respective springs 32.

. When the user wishes to activate the flush, he turns first, clockwise, the operating button 7, without lifting it for the moment, an angle chosen according to the volume of water it wishes to drain and determined by one of the indications, "1" to "10", of the washer 6 (which turns with this button 7), until placing this chosen indication, for example "8", facing the mark 56 (figure 4) cover 11.

This causes the concomitant rotation of the drum 1 on which is fixed said washer 7 and consequently the rise, along its sliding axis 2B, of the piston 3, owing to the fact that the latter is indexed, by the radial pins 47, in the helical slots 22 of the inner tube 1A of the drum 1.

The piston rises to a height which depends on the angle of rotation of the drum 1, and therefore of the graduation chosen on the adjustment washer 6. On the Figure 1, we indicated, by way of example and in dashed lines, the height position maximum possible of piston 3, this position corresponding to the graduation "10" of the washer 6 and therefore at a maximum rotation thereof.

Note that the aforementioned semi-circular groove 53 (FIGS. 2 and 3) only authorizes a rotation of button 7 of the order of a maximum of half a turn, and does not does not allow, at the start of the maneuver, to turn this button in the wrong direction.

• d'une part le picot radial 55 de la rondelle 6 est bien en face de la saignée 52, correspondant à la graduation "8" choisie, de la rondelle 51 (figures 1 et 4),
• et d'autre part, comme mentionné précédemment dans la description des éléments de cette chasse d'eau, les deux doigts internes 26, 27 (figure 13A) d'indexage du flotteur 5 dans le tube externe 1B du tambour 1 se trouvent respectivement bien en face d'une rainure descendante inclinée (de même rang donc que la graduation choisie, donc ici la huitième) 25B (figure 9A) de la surface extérieure de ce tube 1B.

When the selected graduation, for example "8", of the adjustment washer 6 is indeed opposite the mark 56:

• on the one hand, the radial pin 55 of the washer 6 is indeed opposite the groove 52, corresponding to the graduation "8" chosen, of the washer 51 (FIGS. 1 and 4),
• and on the other hand, as mentioned previously in the description of the elements of this flush, the two internal fingers 26, 27 (FIG. 13A) for indexing the float 5 in the external tube 1B of the drum 1 are respectively well opposite an inclined descending groove (of the same rank therefore as the chosen graduation, therefore here the eighth) 25B (FIG. 9A) of the external surface of this tube 1B.

The user can then lift the button 7 and therefore the pull tab 2. The valve 2A then comes to open (Figure 2) until it comes to rest on its seat maintenance in the open position which is constituted by the three aforementioned notches 36 (Figure 12C) of the three tilting parts 4 (that the return force of the springs 32 to be brought forward, against the valve 2A, as soon as the piston 3 is raised).

The water is then suddenly evacuated, through the drain orifice 16, towards the toilet bowl, or to any other user device.

Simultaneously, the water level in the tank 8 goes down, causing him the concomitant descent of the float 5.

The aforementioned internal pins 26, 27 (FIG. 13A) of the float 5 being indexed in the two corresponding helical grooves (numbers "8") above from the outer tube 1B of the drum 1, it follows that this descent of the float 5 causes rotation, in the opposite direction, that is to say counterclockwise, of the drum 1 (and therefore also of the adjustment washer 6 and of the operating button 7).

This simultaneous rotation of the cylinder 1 also causes the descent simultaneous piston 3, which is indexed by its pins 47 in the helical slots 22 of the inner tube 1A of the drum 1.

As soon as the piston 3 comes into contact with the three stop pieces tilting 3, the aforesaid conical part 38 of this piston comes, by cooperation with the combined ramps 37 of these tilting parts 3, tilt these three parts 3 backwards, against the return force of the springs 32, which frees the seat 36, 60 of the valve 2A on its opening seat. The valve 2A then falls back and forth obstruct the water discharge orifice 16, which is made possible by the fact that, in because of this rotation, the pin 55 has reached, at the end of the journey, opposite the first groove 52 (FIG. 4) of the washer 51.

The float 5, and therefore the water level, only went down of a height corresponding to the descent of the piston 3, and therefore proportional to the initial angle (graduation "8") of rotation of button 7. The volume of water discharged by the drain port 16 is therefore also limited to a portion of the total water level of the tank 8, this portion being determined by this angle of rotation. In this example where this angle corresponds to the graduation "8" and if the graduation "10" corresponds to an ascent of the piston 3 for which all of the water in the tank is evacuated when the zipper 2 is then raised, we will only have evacuated eight tenths of the total volume of water in the tank.

The tank then fills up again, since the tap 10 is open, and the float 5 goes back up, this time without turning the cylinder 1 since its pins 26, 27 then follow the vertical path of the vertical grooves 25C (figure 9A) of the outer tube 1B.

When the tank 8 is full again, the arm 9 of the float 5 drives closing the tap 10, which closes the water supply. The toilet flush is then ready for a new use, with a volume of water to be drained which will be new chosen by the user, depending on the angle he will start with turn the operating knob 7 and therefore the selected scale on the washer adjustment 6.

It goes without saying that the invention is not limited to the example of realization which has just been described.

For example, the indexing drum 1 could, instead consist of two concentric tubes 1A and 1B each provided with a index fingerprint, consisting of only one ferrule provided with a first index fingerprint, for example formed by grooves or slides, on its internal face and a second indexing imprint, too formed for example by grooves or slides, on its outer face.

Although the use for cleaning a toilet bowl is that which will naturally be the most widespread for this flush, it is quite obvious that said flush can just as easily be used for cleaning other elements and could for example find an interesting application as a laboratory device.

Claims (4)

Toilet flush of the type comprising: a water tank (8) whose bottom (15) has an orifice (16) for sudden evacuation of water, to a toilet bowl or other member to be cleaned, this tank being supplied with water via 'a tap (10) conventionally associated with a float (5) placed on a movable arm (9) which comes to close this tap when the water level in this tank reaches a predetermined height; a liftable valve (2A) for obstructing this lower orifice (16) for sudden evacuation of water, an axial zipper which passes through this tank and the lower free end of which is secured to said valve (2A), its other free end being secured to a gripping member (7) which protrudes from the cover (11) of the tank, which allows , by actuating this zipper, (2) abruptly opening said valve (2A), which then causes a sudden evacuation of water to the toilet bowl or other member to be cleaned; characterized in that it is equipped with means for causing, when releasing said valve (2A) using the puller (2), the total evacuation of only a portion, determined and adjustable by l user, of the total quantity of water contained in this tank (8), these means comprising: a rotary drum (1), internally indexed in a piston (3) which can be moved vertically, and externally in said float (5), one or more tilting stop pieces (4) serving as a seat (36) for said valve (2A) in the open position, this seat being released, by the shape given to these stop pieces (4), by said piston (3) when it returns to the low position at the end of the water discharge phase, a graduated washer (6) for adjusting a rotation that the user can impose on said gripping member (7), and therefore on said drum (1), before lifting the pull tab (2) to open said valve (2A) and simultaneously cause the rise of said piston (3). Flush according to claim 1, characterized in that it comprises: a drum (1) coaxial with said pull tab (2), this drum being locked in translation, but not in rotation over at least a predetermined maximum angle, and being provided with an internal imprint (22) for indexing a piston (3) able to slide along the pull tab (2) and an external imprint (25) for indexing said float (5), said piston (3), which is locked in rotation but not in translation along the pull tab (2), and which is provided with at least one indexing finger (47) in said internal cavity (22) of the drum (1), this piston (3) having a frustoconical part (38) which cooperates with a conjugate part (37) of at least one tilting stop part (4) to push the latter backwards when this piston is in the low position, Said or said tilting stop pieces (4) which also have at least one seat part, such as a notch (36), capable of cooperating with a conjugate part (60) of the valve (2A) to maintain this valve in the open position as long as said piston (3) is above its low position, said seat (36) being released, to cause the valve (2A) to drop, as soon as the piston (3) returns to its low position and then pushes said stop piece (s) backwards, At least one finger (26, 27) for indexing the float (5) in said external cavity (25) of the drum (1), Means (7, 6) for driving, before lifting the pull tab (2), the rotation, by an adjustable value angle by means of a graduation, of said cylinder (1) and for driving accordingly, by cooperation of said internal cavity (22) of the drum (1) and of said one or more indexing fingers (47) of the piston (3), the rise of this piston by a height limited by the magnitude of said angle of rotation, said external imprint (25) of the drum (1) having one or more profiles (25B, 25C) capable of, by cooperation with said indexing fingers (26, 27) of the float (5), cause, when lifting , after having therefore rotated said drum (1) by a determined angle, the pull tab (2) to open the valve (2A) and rest it on said seat (36), the reverse rotation of the drum (1) due to that it is then driven by the sudden descent of the water level and therefore the float, the piston (3) then coming, at the end of the race, release the seat (36) of the valve (2A), the latter then falling and consequently stopping the evacuation of water,
so that finally the flush only drains a limited amount of water and fixed by said angle of rotation of the cylinder (1),
said external cavity (25) further having one or more straight and axial parts (25C) to then allow the float (5) to return to its high position without acting on the angular position of the drum (1). Flush according to claim 2, characterized in that the float (5), the drum (1), the pull tab (2) and the tank (8) are elements of the same axis (33). Flush according to claim 2 or claim 3, characterized in that said drum (1) is in fact composed of two tubes concentric (1A, 1B) respectively carrying said inner cavity (22) and said external imprint (25).

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