FR2593260A1 - Tap controlled by a micrometric screw - Google Patents

Abstract

Tap device controlled by a micrometric screw. It consists of the combination, on the one hand, of a control 17 securely fastened to a micrometric screw 14 with a double thread 13, 15 and, on the other hand, of a piston 5 securely fastened to a rubber seal 6 driven by the second lower threaded sector 10 of the screw with a pitch different from the first. It is intended for regulating, with control demultiplication, the flow rate of liquid, especially for use with a shower, so as to allow the heat to be adjusted progressively, the mechanical control elements to be insulated, and liquid to be saved.

Description

 Faucet device controlled by micrometric screw.

 It is intended to regulate with reduction of fluid flow control in particular for shower use, in order to allow the progressiveness of the thermal adjustment, the isolation of the mechanical control elements and a saving of fluid.

 To date, the valves currently used do not have sufficient operating range, in fact, the setting is "sharp", that is to say that a valve open at 900 is already at full flow. When you want to adjust the water temperature, you must act with extreme finesse on the handle to avoid these adjustment difficulties, or too hot or too cold, it is then difficult to correct with the devices currently in use a mixture determined.

 The device according to the invention eliminates these drawbacks and gives the possibility of ensuring perfect adjustment by causing the control handle to perform a very large rotation to obtain an extremely reduced fluid passage opening movement. , the whole in order to obtain a maximum progressivity for the regulation of the flow ensuring the obtaining of a temperature corresponding exactly to the degree selected by the user which is more particularly sought for showers. Also the design of the tap allows to make completely sealed the control mechanism against current taps that are scaling up.

 It is constituted by the combination, on the one hand of a horn secured to a micrometric screw with double thread, and on the other hand of a piston secured to a rubber seal driven by the second lower threaded sector of the screw not different from the first.

In the accompanying drawings, given by way of nonlimiting example, of one of the embodiments of the subject of the invention
Figure 1 is a view of the valve seen in elevation and in longitudinal section.

 Figure 2 shows a perspective view of an application of the device for shower control.

 The tap, FIG. 1, is constituted by a body 1 unassembled by screwing on the block 2, the water inlet with fluid supply chamber 3 and valve seat 4.

 The body 1 receives in its bore the piston 5 secured to the rubber seal 6.

This piston 5 performs a translational movement in the
cylindrical sector 7 sealed by the O-rings 8, 9 and has an internal thread 10 and a slide 11 receiving a guide screw 12 preventing any rotary movement.

 On this thread 10 is notched the sector 13 of the screw 14 which has a second threaded sector 15.

 These two sectors have different steps (for example / 10 steps 150 and / 10 steps 125).

 The sector 15 is screwed onto the pitch 16 produced on the body 1 and is secured to the external control handle 17 by the locking screw 17 '.

 The external face of the handle 17 is chambered and receives an element formed by a spiral 18 in the groove of which a free ball 19 moves retained by the transparent plate 20. This ball assembly 19, spiral 18 gives the indication on the amplitude of the tap opening.

 The O-ring 21 seals the mechanism.

 By the essential element which is the micrometric screw 14 with double sector 13 and 15, one obtains a drive reduction of the piston 5 which regulates the flow rate of the fluid.

 The screw mechanism 14 and threads 10, 16 are completely isolated from the fluid and therefore undergoes no risk of deterioration.

 It is thus mounted on the hot water 22 and cold water 23 pipes, the twin taps 24, 25 which are adjusted with maximum precision with large amplitude rotations which facilitates micrometric regulation.

 This avoids going from cold to hot or overheating by an infinite progressivity.

 These valves 24, 25 after adjustment are left or green. They are connected by the twinning line 27. The line 27 is controlled by the valve 25 and the handle 26 with quick opening. There is thus a full flow which regulates in volume and in tem peratu re.

 For this device, an important saving of hot and cold water is achieved because a volume of water strictly limited to cleaning, washing, watering or the like is used only when the time is right. What it was important to obtain in the combination of the progressive opening by the piston 5 and the rapid valve 25 controlled by the handle 26.

 It is understood that the invention is not limited to the exclusive use for showers since it is applicable to any other regulation of fluids.

 This is why the shapes, dimensions and arrangements of the various elements may vary within the limit of the equivalents, as moreover the materials used for their manufacture without changing for this, the general conception of the invention which has just been described.

Claims (3)

EVND ICAT IONS  10 Faucet device with micrometric screw control intended to ensure re-rolling with a gear reduction device for controlling the flow of fluid, in particular for use as a shower allowing the progressiveness of the thermal adjustment, the isolation of the mechanical elements of transmission and pollution control, as well as a saving of fluid characterized by the combination of a body (1) which is screwed on the block (2) given water receiving in its internal bore a piston (5) rubber seal holder ( 6) moving longitudinally with slide (11) and guide screws (12) and by an internal thread (10) making it integral with a threaded rod (14) with double pitch (13, 15) the upper thread ( 15) contacting the thread (16) made at the top of the body (1) while the opposite end (25) of the threaded rod is connected by screws (17 ') to the control handle (17).  20 Device according to claim 1, characterized in that the piston (1) is provided with O-rings (8, 9) and the control handle (17) with O-rings (21) so that the mechanical elements are fully isolated from the fluid.  30 Device according to claim 1, characterized in that for a shower appliance is constituted by an assembly of twin valves (24, 25) connected by the pipe (27) on which is mounted the valve (25) with control (26 ) quick opening.  40 Device according to claim 1 characterized in that the handle (17) has on its internal face a recess immobilizing an element formed by a spiral (18) with groove allowing the free movement of a ball (19) of a transparent plate (20) ensuring the closure of the assembly.