CH346498A - mixer tap - Google Patents

Description

The present invention relates to a mixer tap allowing, by the operation of a single maneuvering device, handle or steering wheel, to mix hot water and cold water in all the desired proportions to obtain water at a suitable temperature, for example for a shower or a bath. Such a valve must be able to ensure the full range of hot and cold water mixtures, as well as the complete opening of any one of the two inlets with a simultaneous complete closing of the other.

To this end, the first mixer tap according to the invention comprises two sliding pistons carrying the control valves for the two inlets of cold water and hot water, and which are controlled by a common rotary operating member, and is characterized - terise in that said maneuvering member is integral with two cams each actuating one of the pistons, these cams having a closed circular outline and being arranged concentrically, the profiles of the two cams being different from each other so that , depending on the angular position of the maneuvering member, the two flaps are closed simultaneously, have various combinations of different degrees of opening, or are one entirely open while the other is closed and vice versa.

The drawing shows, by way of example, one form of execution of the mixer tap according to the invention and several variants of this form.

fig. 1 represents this form of execution, seen in section along an axial plane; fig. 2 is a top elevational view of a first variant specially designed for a shower installation; fig. 3 is a sectional view along 111-III of FIG. 2; fig. 4 is a top elevational view of a second variant designed specifically as a washbasin faucet; fig. 5 is a sectional view along V-V of FIG. 4; fig. 6 is a top elevational view of a third variant designed as a sink faucet and comprising means for adjusting the flow rate of mixed water; fig. 7 is a sectional view along VII-VII of FIG. 6; fig. 8 is a partial sectional view along an axial plane of this third variant; fig. 9 is a diagram developed desRTI ID="0001.0269" WI="8" HE="4" LX="1732" LY="1971"> two cams of the valve of FIG. 1.

The mixer tap shown in fig. 1 is constituted by a body 1 comprising two bores 2 and 3 whose axes are parallel and arranged on the same circle whose first center is located on the axis of the body 1. These bores start from the face 4 of the body 1 on which is mounted the first handwheel 5. In the bottom of each of these bores opens a nozzle 6 or 7 for cold water or hot water. On the other hand, these bores communicate, at an intermediate point of their height, with a channel 8 for leaving mixed water.

In each bore 2 or 3, is fixed a sleeve 9 containing the sliding piston 10 or 11 carrying the valve controlling the corresponding water supply. The sleeve 9 is simply screwed into a threaded part 12 of the bore 2 or 3. To allow easy screwing or unscrewing, the outer end 9a of each sleeve is in the shape of a polygon.

The opposite end of each sleeve has a shoulder 9b applied against a reverse shoulder 13 of the bore 2 or 3, with the interposition of a seal 14. The terminal part 9c of this end of the sleeves 9 forms a seat for a valve 15 fixed by a nut 16 on the threaded end 17 of the corresponding piston 10 or 11.

The outer wall of each sleeve 9 has a Borge enclosing an O-ring 18. From Mime, the end 19 of each piston, which is opposed to the end 17, comprises a Borge enclosing an O-ring 20. Each sleeve 9 has one or more perforations 21 at the passage leading to the outlet channel B. A shoulder 9d, provided in each sleeve 9 near the perforations 21, sits on a spring 22 pushing the extr6mit6 19 of the corresponding piston to apply the first valve 15 against the first seat 9c formed by the sleeve. On the side of the end 17, each piston comprises a part of reduced diameter 23, which can be provided with guide ribs, and ensuring a progressive passage of water as the valve 15 moves apart. relative to its seat.

The ends 19 of the pistons 10 and 11 are each provided with a notch located on a different side. Thus, the end 19 of the piston 10 is notched on the internal side located towards the first center of the Body 1, so that this end has a projection 24 only on the other side. On the other hand, the end 19 of the piston 11 is notched on the external side, and its projection 24 is thus located on the internal side.

The inner face of the handwheel 5 carries two concentric circular cams 25 and 26 separated by a crown 27 which is also concentric. The cam 25 is adapted to control the projection 24 of the piston 10, while the cam 26 controls the projection 24 of the piston 11. As for the crown 27, it is opposite the corresponding wall, internal or external, of the projection. 24 of the end 19 of each piston, so that it ensures the maintenance of the first pistons 10 and 11 in their respective appropriate angular positions, preventing them from rotating.

The handwheel 5 is mounted on the first body 1 by means of a central barrel 28 engages around an extension 29 of circular section of the body 1. This extension is threaded at its end for the mounting of a nut 30 holding the first handwheel in place.

The cams 25 and 26 are more or less high so as to push the projections 24 of the pistons more or less, <RTI ID="0002.0273" WI="7" HE="4" LX="437" LY="2498" > to remove their valves 15 from their Seats by the same amount. This ensures a more or less significant passage of cold water or hot water between the first valve and its seat, then the first along the piston, in the perforations 21 and the first outlet channel B. FIG. 9 represents the first trace of the development of the profiles of the two cams 25 and 26. As can be seen, the outer cam 25 comprises a first horizontal portion 25a of short length without action on the projection 24 of the piston 10, then an inclined part 25b ensuring a gradual sinking, a Part 25c. maintaining the complete depression of the piston, a Part 25d inclined in the opposite direction to Part 25b and allowing the raising of the piston, and finally again the horizontal Part 25a of short length, without action On the piston, in total 360 . As for the cam 26 which acts during this time on the piston 11, it comprises successively: a horizontal part 26a without action, an inch-shaped part 26b ensuring a progressive depression of the piston, a short flat part 26c maintaining the depression - complete cementing of the latter, and finally a sudden detachment 26d ending again at the initial flat part 26a, also in total 360.1.

The two cams 25 and 26 are arranged with respect to one another, so that the beginning of their flat parts 25a and 26n are at the same time above the projections of the pistons 10 and 11, but do not touch them. not even. The pistons are then completely raised under the action of the springs 22, so that the valves are applied against their seats 9c and the two inlets are completely closed.

By rotating the flywheel 5, it brings the inline part 25b of the cam 25 onto the projection 24 of the piston 10, which progressively depresses the latter and consequently opens the corresponding water supply. During this time, the flat part 26a of the cam 26 moves above the projection 24 of the piston 11, without acting on it, so that the corresponding water inlet is tested closed during the progressive opening of the piston. the first one.

Then, by continuing the rotation of the flywheel 5, an brings the flat part 25c of maximum height on the projection 24 of the piston 10, so that the corresponding arrival is open to the maximum. The other arrival is always closed During this time.

Then, continued rotation of the flywheel brings Part 25d of cam 25 onto the projection of piston 10, and Part 26d of cam 26, angled in the opposite direction, onto the projection of piston 11. - rivet corresponding to the piston 10 is therefore gradually closed under the action of the spring 22 which pushes the first piston upwards, while the arrival corresponding to the piston 11 is progressively open.

Then Part 26c of cam 26 maintains piston 11 in the fully open position, piston 10 then returns to the fully closed position of the corresponding inlet. At this time, the rotation of the flywheel is stopped by a stop 44 carried by the first body 1 and against which abuts a projection 43 of the flywheel. To close the valve completely, it is therefore necessary to rotate the steering wheel in the opposite direction until the two initial flat parts 25a and 26a are again above the pistons which therefore close. The steering wheel is then stopped in this position by another stop 44 carried by the body 1 and against which the projection 43 abuts. The two stops 44 limit the useful amplitude of rotation of the steering wheel 5 which is 320° (see the drawing of the development of the cams 25 and 26 and the strokes of the pistons 10 and <B>11</B> in Fig. 9).

The components of the mixer tap which has just been described can be dismantled easily and quickly. Indeed, after removal of the handwheel 5 by unscrewing the nut 30, there is direct access to the polygonal ends 9a of the sockets 9. It is therefore very easy to unscrew these and remove them from the bores 2 and 3 with the corresponding pistons and all the ancillary components, such as the return spring 22, the seals and the valve 15.

In the variant of FIGS. 2 and 3, the body of the valve is intended to be mounted with its axis tilted slightly relative to the horizontal. The two parallel bores 2a and 3a for housing the pistons are therefore also slightly inclined with respect to the horizontal. The handwheel 5a is arranged on the face of the body 1a opposite to that intended to be mounted against a wall. The ajuta ges 6a and 7a cold water inlet and hot water are arranged laterally. As for the outlet channel 8, it is arranged vertically to allow the connection of a vertical pipe or a flexible supply pipe for a shower installation. All the other organs of this variant are, moreover, in conformity with the tap described previously and represented in FIG. 1.

In the variant of FIGS. 4 and 5, the body 1b of the faucet is intended to be mounted vertically on the rear edge of a sink. The axes of the two bores 2b and 3b are also vertical and the handwheel 5b is arranged above the upper surface of the body<B>lb.</B> The cold water and hot water inlets hot are vertical and open into the bottom of the bores 2b and 3b. The supply lines can be mounted inside the threaded sleeve 31 which is used to mount the body 1b on the body of the washbasin. The outlet channel 8 leads to a sleeve primer 32 in which is mounted a spout 33 for the flow of water.

In the variant of FIGS. 6, 7 and 8, the body l c of the valve is intended to be mounted in a manner analogous to the body of the valve shown in FIGS. 2 and 3, that is to say with its axis slightly inclined with respect to the horizontal, its rear face being applied against a wall and its front face bearing the handwheel 5c. The cold water and hot water inlet nozzles 6c and 7c are provided on either side of the body 1c, their axes being horizontal. These nozzles therefore open out laterally into the bottom of the bores 2c and 3c for housing the sockets 9. The outlet channel 8 opens out into a cavity 34, in which the spout for evacuating the mixed water can be fixed. The body 1c is provided with an axial bore 35 from which the water discharge pipe starts, this bore communicating via passages 36 with the bores 2c and 3c housing the sliding pistons<B>10e</B> and L l c. In this bore 35 is mounted a needle or piston 37, the lower end of which is screwed into the lower threaded part of the bore 35. This piston has a peripheral groove containing a seal 38. Its end 39 facing the exterior of the bore 35 is hollow and has an interior section of polygonal shape, for example square or hexagonal. A rod 40 of the same section is engaged in this hollow end 39, this rod is fixed to an operating button 41, by means of a screw 42. The rod 40 passes through the nut 30 which ensures the maintenance of the handwheel 5c on the body lc. This nut is screwed as before on an extension 29 of the body 1c, which is obviously crossed by the axial bore 35.

When knob 41 turns, rod 40 of polygonal section drives piston 37 by its hollow end 39, the lower end of the piston being screwed into the lower threaded part of bore 35, which effectively ensures its axial movement. in this bore. By operating the button 41, it is therefore possible to bring the lower end of the piston 37 into the lower part of the bore 35 at the level of the passages 36 and of the outlet channel 8 to reduce or increase more or less the free passage at the mixed water, and ultimately adjust the flow of it. Obviously, this flow rate adjustment device can also be fitted to the mixer taps described above.

Claims (3)

CLAIM Mixer tap, comprising two sliding pistons carrying the control valves for the two cold water and hot water inlets, and which are controlled by a common rotary operating member, characterized in that said operating member vre is integral with two cams each actuating one of the pistons, these cams having a closed circular contour and being arranged concentrically, the profiles of the two cams being different from each other so that, depending on the angular position of the actuator, the two flaps are closed simultaneously, have various combinations of different degrees of opening, or are one fully open while the other is closed, and vice versa. 1. Mixing valve according to claim, characterized in that the axes of the bores serving as housing for the pistons are located at the same distance from the axis of the body of the valve and that the heads of the pistons are notched, the one on the inner side, turned towards the axis of the flywheel, the other on the outer side, so that the first piston is controlled by the outer cam acting on the outer projection of its head, and the second piston by the inner cam , acting on the inner protrusion of its head. 2. Mixing valve according to claim and sub-claim 1, characterized in that the flywheel comprises, between the two cams, a concentric crown preventing rotation of the pistons around their axis. 3. Mixing valve according to claim, characterized in that the two bores serving as housings for the pistons communicate via orifices with an axial bore of the body of the valve, from which the mixed water outlet channel originates and in which can be move a needle, controlled by a button used to adjust the flow of mixed water.