MXPA01004399A - Cartridge for a single-handle mixer faucet - Google Patents

Abstract

The invention relates to a cartridge for a single-handle mixer faucet comprising a fixed (4) and a moveable sealing washer (3) which are arranged in a housing (1), whereby the moveable sealing washer (3) comprises a recess (15) for engaging with a control tappet (9) of a control handle (11) which traverses a pivot support (10). The invention provides that the moveable sealing washer (3) comprises, on the surface thereof which faces the control tappet (9) and which is located in the area of the outer periphery of said washer, a step (14) which serves as a volume stop that can cross over with regard to the pivot support (10).

Description

CARTRIDGE FOR A MIXING VALVE OF A LEVER DESCRIPTION OF THE INVENTION The invention relates to a cartridge for a mixing valve of a lever with a fixed and mobile sealing washer which are disposed in a body, the moving joint washer being comprises a recess for the attack of a control pin of a control lever passing through a pivot support. A lever mixing valve is shown, eg, in US 3 893 482 A. In the case of conventional single lever mixing valves, the flow rate of the valve is determined by raising or lowering a lever handle which is fixedly attached to the control lever, while the temperature is determined by turning to the right or left. Correspondingly, the raising or lowering of the lever-type handle causes the control pin attached fixedly to the lever-type handle to displace the moving joint washer with respect to the fixed joint washer in the cartridge. If the valve is closed, then the lever-type handle is completely lowered. When lifting the lever-type handle, by moving the mobile joint washer, the mixing chamber existing in the mobile joint washer reaches above the hot and / or cold water passage as well as Hef: 129031 of the mixed water passage in the fixed washer, so that the mixed water outlet is possible. If the lever mixing valve has a conventional symmetric configuration, then the total lift of the lever handle causes a maximum flow of mixed water through the valve. If now for the user of the mixing valve of a lever does not care about the temperature of the water coming out, then he will lift the lever handle in the central position, and certainly up to the stop even if it requires such a large flow. And above all, certainly due to the fact that the driving range for the lever-type handle is relatively short, so that the user does not think about a dosage of the amount of water. But with this naturally a greater amount of water is wasted, and also of energy - since it is mixed water - of what is really necessary. There are already cartridges in which an additional component is inserted to avoid a total involuntary opening of the valve. This component can contain an elastic element, which through the application of pressure allows a total opening of the valve. However, time and costs are invested in the manufacture and assembly of the component in the cartridge. The task of the present invention resides in creating, without the investment of time and costs, a lever mixing valve of the type under consideration that only allows the passage of the maximum flow when this is consciously adjusted by the user. In other words, for the opening of the valve, regardless of the temperature and the flow rate, there should be a lower flow than before and, despite this, the comfort of a large flow rate is possible. This task is solved by the fact that the movable joint washer comprises on its surface facing the control journal, in the portion of its outer circumference, a step as a volume stop that can be saved with respect to the pivot support. If the lever-type handle is now raised, then this tilting movement is transmitted to the control journal and this displaces the movable joint washer with respect to the fixed joint washer. When this happens, the step according to the invention approaches the edge of the pivot support until it finally hits against it. The height of the step is now chosen so that in the event of a greater pressure on the lever-type handle, ie when increasing the opening moment on the lever-type handle, the pack of washers constituted by the fixed and mobile joint washers moves downwards against the tightness of the packings in the water inlet and water outlet passages and against the water pressure, the step can therefore be saved up to the maximum amount of flow. During conventional handling in which the temperature and the amount of water do not particularly matter, the user will only carry out a lifting of the lever-type handle, and thereby displacement of the movable joint washer to the shock of the pivot support against the step on the joint washer. If you consciously want to get more water out, then you can consciously cause this by energetically lifting the lever-type handle. It is known to provide between the movable joint washer and the pivot support what is known as a joint washer vehicle. A joint washer vehicle of this kind serves as a bearing for the movement of the movable seal washer with respect to the pivot support and during the movement of the control journal in the recess of the movable seal washer. The joint washer vehicle is not movable with respect to the joint washer by the grip on the recess of the joint washer. In accordance with the invention, the step is provided in a joint washer vehicle of this type that is disposed on the surface oriented towards the control pin of the movable joint washer and which intervenes in the recess for the control pin of the joint. joint washer. In this way it is possible to use a conventional sealing washer and yet no additional component is required. Preferably one or both of the interlocking edges of the step and the pivot support are beveled or rounded. In this way it is possible to feel a marked resistance when saving the step, but nevertheless a transversal inclination can not happen. The invention will now be explained in more detail on the basis of the accompanying drawings, with Fig. 1 showing a cartridge according to the invention and Fig. 2 the detail of Fig. 1 characterized by a circle with dots and stripes. In a body 1, a fixed joint washer 4 and a mobile joint washer 3 are inserted, wherein in the half-round recesses around the water passages for the cold, hot and mixed water of the fixed joint washer 4 is inserted. insert gaskets 6 and 7 that go through the bottom 5 of the cartridge. During the assembly of the cartridge, these packages 6 and 7 are compressed and cause a pressure of tightness of the fixed joint washer 4 on the movable joint washer 3. In the movable seal washer 3 a mixing chamber 8 is provided which according to the position of the movable seal washer 3 communicates with the water inlets and / or the mixed water outlet in the fixed joint washer 4. On the opposite surface of the joint washer 3, which is oriented towards the control lever 11 of the mixing valve of a lever, there is a recess 15 in which the control pin 9 of the control lever 11 attacks. In this, the control lever 11 passes through the pivot support 10 on which the control lever 11 rotates in a bearing on an axis 12. In the control lever 11, the lever-type handle (not shown) is mounted. In the exemplary embodiment shown, on the surface of the movable seal washer 3, a seal washer vehicle is provided comprising a step 14 in the region of the outer circumference of the movable seal washer 3. When the lever-type handle is raised, a pivoting movement of the control lever 11 takes place around the axis 12, whereby also the control pin 9 executes a tilting movement about the axis 12 and thereby displaces the movable seal washer 3. with respect to the fixed joint washer 4. In this case the surfaces of the pivoting support 10 and of the vehicle 13 of the facing sealing washer slide on each other until the step 14 of the sealing washer vehicle 13 strikes against the lower edge of the pivot support 10. The height of the step 14 is chosen so that when greater forces are applied on the lever-type handle, an additional displacement of the movable joint washer 3 is obtained as the moving joint washer 3 moves together with the fixed-joint washer 4 towards the bottom 5 of the cartridge against the pressure of tightness of the gaskets 6 and 7 and against the prevailing water pressure, whereby the lower edge of the pivot support 10 can be slid over the step 14 of the joint washer vehicle 13. By means of an increase in the sliding resistance at the point where the step 14 collides against the pivot support 10, a "end point" for the conventional water intake is thus placed in which the temperature and temperature do not matter. the amount. A water-saving measure integrated in the cartridge and for which an additional part is not required and for which therefore a greater complexity of assembly is not required either. No additional costs are incurred in the manufacture of the cartridges and yet it is possible to save water easily with this device without having to otherwise dispense with the comfort of a strong flow as hitherto at the time of desire.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects or products to which it refers.

Claims (2)

CLAIMS Having described the invention as above, it is claimed as property contained in the following claims:

1. Cartridge for a mixing valve of a lever with a fixed and mobile washer that are arranged in a body, being that the washer of mobile joint comprises a recess for the attack of a control pin of a control lever passing through a pivot support, characterized in that the mobile joint washer comprises on its surface oriented towards the control pin, in the portion of its circumference outside, a step as a stop of volume that can be saved with respect to the pivot support, or because this step is provided in a joint washer vehicle that is disposed on the surface of the mobile joint washer facing towards the control pin and which intervenes in the recess for the control pin of the joint washer. Cartridge according to claim 1 or 2, characterized in that one or both of the interlocking edges of the step and the pivot support are beveled or rounded.