FR2662723A1 - Water-receiving device for a low-level cistern with two discharge capacities, having a nominal flow rate in both cases - Google Patents

Abstract

The invention relates to a device offering two possibilities of use, depending on the requirements, . by lifting the small control knob (2), the cistern releases approximately half the available volume of water, . by lifting the large control knob (3), the cistern is emptied completely. It consists essentially of a movable fixture and its attachment mechanism. The movable fixture, which slides freely along the central tube (13), consists of a conical ferrule (6), a cylindrical guide (7), an open-worked cylindrical ferrule (8), an annular float (9), a conical closure cylinder (10) and a corrugated circular flexible seal (11). The securing mechanism is formed by two hooks (12) pivoting about their respective axis (23) and by two weights (18) by means of which the hooks (12) protrude, in the rest position, outside (13). By lifting (2), a cam (19) retracts the hooks (12) inside (13), thereby releasing the movable fixture which closes the orifices (15) and stops the discharge flow.

Description

 The present invention is a water saving device with two flow capacities & nominal flow rate in both cases, simple and inexpensive.

 Cleaning, by rinsing, the toilet bowl is generally carried out by the complete emptying of the tank, which is not justified with each use, so there is a significant wastage of water.

 To solve this problem, various solutions have been proposed, some complicated, others simpler.

However, all of these solutions have at least one of the following drawbacks:
- obligation to modify the existing tank,
- reduction in the stroke of the check valve (therefore reduction in the flow rate) thus adversely affecting the efficiency of rinsing the bowl,
- need for an effort of reflection on the part of the user to obtain the desired result (ex: PRESS to save water, PULL if not).

your device according to the invention overcomes these different drawbacks, and as required, offers two possibilities for using the flush:
by lifting the small control button (2), the tank releases about half of the volume of water available,
by lifting the large control button (3), the toilet flushes completely.

 Due to its position (above the button (3)) the button (2) is grasped first by the user, thus constituting a priority traction member.

 This mechanism can be installed between all commercially available flushes and avoids dismantling the tank if the latter is fitted with a quick-fixing system.

 This new device is essentially made up of a mobile equipment and its attachment mechanism. The mobile assembly, which slides freely along the central tube (13), is formed by a conical ferrule (6), a cylindrical guide (7), a perforated cylindrical ferrule (8), d 'An annular float (9), a conical shutter cylinder (10) and a flexible circular corrugated seal (11). All these elements are integral with each other.

 As for the attachment mechanism, it is formed by two hooks (12) supplemented with two monkfish mass (18), the hooks (12) pivot around two axes (23) which are inserted in bosses (not shown) made at inside the central tube (13), a cylindrical bulge (19) (integral with the rod (17)) acts as a cam; this hooking mechanism is housed inside the central tube (13), the hooks (12) protrude outside of (13) thanks to two slots (22) made in the latter. This device is completed by a small control button (2) screwed onto the rod (17) and by a large control button (3) screwed onto the tube (5) which has a shoulder (21) at the other end. The rod (17) can slide freely & inside (3) and (5). Similarly, the tube (5) can slide freely inside the guide (4) and the central tube (13) which has a guide (20) at the top. The central tube (13) is equipped at its base with a check valve (not shown), the two slots (22) act as overflow orifices in the event of overflow. This new device does not use any spring or any metal part, provided that the pins (23) are in one piece with the hooks (12) and therefore made of plastic like all the other parts of the device.

 lots of accompanying drawings illustrate the invention. FIG. 1 represents the complete device according to the invention (the mobile assembly is shown in half-section for a better understanding of the device). Figure 2 shows a section of the upper part with the attachment mechanism.

 Figure 1 shows the device installed in a tank (1) supplied by a float valve (not shown).

your object of the invention mechanism works as follows: it is considered that the tank (1) is filled with water; therefore, the float (9) is in the high position, therefore:
by lifting the small control button (2), the cam (19), by means of the rod (17), moves the hooking mechanism constituted by the hooks (12) from its position of equilibrium; the flyweights (18), which has the effect of retracting the hooks (12) inside (13).

The upper part of the cam (19) comes into contact with the shoulder (21) of the tube (5) which thus accompanies the upward movement, as well as (3) which is integral with (5). The shoulder (21) comes into contact with the base of the guide (20), & at this instant all the clearances are filled and the length of the cam (19) is sufficient so that the hooks (12) are always retracted & BR < the interior of (13). your upward movement continue, the central tube (13) accompanies this movement, as well as the check valve (not shown) which is integral with (13) and which comes to position, this thanks to the hydrostatic boom, under the upper face of the chamber (14); thus releasing the water which passes through the orifices (15) and flows into (16). The relaxation of (2) causes the fall, by gravity, of the elements (2), (17), (19), ( 3) and (5); the hooks (12) again protrude outside of (13) thanks to the weights (18). The water flows with the nominal flow (flow given for the complete emptying of the tank), the mobile equipment, thanks to the float (9), accompanies the drop in the water level. The seal (11) comes into contact with the bottom of the tank (24), the water outside the conical obturator cylinder (10) no longer flows (or very little), on the other hand the water in the inside of (10) continues to pass through the orifices (15) and always flows into (16); the more the level inside (10) decreases the greater the tightness at the joint (11) thanks to the conical shape of (10). The level inside (10) decreases until the moment or the check valve falls back and thus blocks the orifice (16). The tank is supplied by the float valve (not shown), the shutter cylinder (10) with its seal (11) always sealing at (24), only the water level inside (10) increases. When the interior level at (10) has reached the exterior level, then only the moving part begins its ascent thanks to the float (9).

When the water level is close to the maxinna, the conical ferrule (6) approaches the hooks (12) whose rounded external shape generates, at the level of contact with (6), a horizontal force directed towards the interior of (13 ) and sufficient to overcome the antagonistic moment created by the weight of the weights (18) and the distance from the center of gravity of (18) to the axis of rotation (23).

Thus, the hooks (12) are gradually pushed back inside the lights (22) as the water level increases. When the guide (7) a exceeds the level of the hooks (12) these return to their stable position and protrude again outside of (13). The device returned to the initial state.

 by lifting the large control button (3), the shoulder (21) of (5) (integral with (3)) comes into contact with the base of the guide (20) of (13); the elements (2), (17) and (19) accompany the movement of (3) thanks to the shoulder (25) of (3); but the hooks (12) always protrude outside the slots (22) of (13) because the clearance between (20) and (21) is less than the stroke which is necessary for the cam (19) to come into contact with the hooks (12) and thus retract them inside (13), at this moment all the games are filled. The ascending movement continuing, (13) is raised, entraining in its ascent the mobile equipment, grave on the hooks (12). The check valve, integral with (13), also lifts, the water passes through the orifices (15) and flows at the nominal flow rate at (16). The level drops and all the water flows until the check valve falls back and plugs the orifice (16). pile hooks (12) have a curved shape at their end to avoid their untimely opening under the shocks undergone by (13).

Claims (9)

 1) Device for dispensing two different amounts of water, characterized in that it can, depending on the choice of the user, deliver either about half the volume of water available in the tank by lifting the small control button (2), or the entire volume of water available by lifting the large almond button (3).  2) Device according to claim 1 characterized in that the small button (2), housed above the large button (3) at the shoulder (25), constitutes a priority traction member.  3) Device according to claim 1 characterized by a movable assembly which slides freely along the central tube (13) and which is formed of a conical ferrule (6), a cylindrical guide (7), a cylindrical ferrule perforated (8), an annular float (9), a conical obturator cylinder (10) and a flexible circular corrugated seal (11). All these elements are integral with each other.  4) Device according to claim 1 characterized by a hooking mechanism of the movable assembly, housed inside the upper part of (13). This attachment mechanism is formed by two hooks (12) pivoting about their respective axis (23). At rest, thanks to the moment created by the weight of the weights (18) and the distance from the center of gravity of (18) to the axis of rotation (23), the hooks (12) protrude by (13) through two slots (22) made in (13).  5) Device according to claim 1 characterized in that, by lifting the small control button (2), the cam (19), via (17), comes into contact with the hooks (12) which has the effect of deviating them from their equilibrium position and retracting them inside (13). The upper part of the cam (19) comes into contact with (21), then (21) comes into contact with the base of (20), at this instant all the clearances are filled and the length of (19) is sufficient to the hooks (12) are always retracted & b inside (13). The central tube (13) lifts up which causes the water to flow out at (16) at the nominal flow rate (flow rate given for emptying complete of the tank), until the mobile assembly which accompanies the drop in the water level, closes the orifices (15) and seals with & (10) and (11). The check valve falls back, stopping the flow of water. When the water level rises, the conical ferrule (6) gradually pushes the hooks (12) inside (13). When the guide (7) has exceeded @ the level of the hooks (12) these return to their stable position and protrude again outside of (13) thus allowing the moving assembly to become integral with (13).  6) Device according to claim 1 characterized in that, in soule  front of the large control button (3), the shoulder (21) of (5), which is soli  daire of (3), comes into contact with the base of the guide (20) of (13); but the hooks (12) extend beyond the outside of (13) because the clearance between (20) and (21)  is less than the corse which is necessary for the cam (19) to come in  contact with the hooks (12) and thus retract them there inside (13).  water flowing at nominal flow.  and the retsrw valve, which is integral with (13), thus releasing any  Thus, (13) lifts up, driving the mobile assembly (thanks to the hooks (12))  7) Device according to claim 1 characterized in that the rod (17) can slide freely & inside (3) and (5). Similarly, the tube (5) can slide freely & 1 'inside the guide (4) and the central tube (13) which has a guide (20) in the upper part.  8) Device according to claim 1 characterized in that the chets (12) have a rounded spout at their end to avoid their untimely opening under the shocks undergone by (13).

 9) Device according to any one of claims # characterized in that it can be entirely made of plastic, and that it does not use a spring or any metal part, provided that the axes (23) are in one piece with the hooks (12) and therefore also made of plastic.