FR2621630A1 - WATER FLUSHING CONTROL MECHANISM FOR TOILET BY PUSH BUTTON - Google Patents

Abstract

This mechanism, which comprises a float carrying the seal 6 of the valve moving in a housing supplied with water by the flushing tank, is particularized in that the cylindrical float 3 consists, on the one hand, of a part high 3a of large diameter, open at its top and having no shoulder that could be located below the normal level R1 of the water in the tank R (in the closed position of the valve) and a lower part or appendix 3b-3c of smaller diameter bearing the seal 6 and, on the other hand, is concentric with said housing 4, so that the annular space B formed between its outer part and the inner wall of said housing is as small as possible.

Description

_-1 _ The invention relates to a control mechanism placed at

  inside a toilet flush tank

  Until recent times, the mechanisms of the aforementioned kind, included a wheelhouse crossing the cover of the tank and controlling the opening by drawing of the valve of the evacuation of the rinsing water comprising a seal coming to close the drain hole of the tank (large section hole to allow the evacuation of 8

  to 10 liters of water in a few seconds).

  To avoid having to maintain the draft on the wheelhouse during the evacuation operation, the valve is generally provided with a float located near said seal and whose volume is

  calculated to compensate for the weight of the moving part of the mechanism.

  The tensile force corresponds to the weight of the water column on the Joint, less the vertical upward force generated by the float (of the order of 500 g.) Being in harmony with the gripping means of the outer button of wheelhouse operation

  (gripping by two fingers and vertical stroke of 3 cm. approximately).

  Two innovations have appeared recently: - the first, whose motivation is purely aesthetic, residing in replacing the maneuver by pulling the actuation of the

  valve, by a reverse operation carried out from a pusher.

  To prevent the Fe mechanisms from being too bulky, manufacturers have generally chosen to multiply the stroke of the push-button relative to that of the valve in the ratio, for example, from 1 to 3. Thus a stroke of 1 cm. of the pusher generated a stroke of 3 cm. of the valve. Of course, replacing the draft by a push involved introducing dice reversing members

  movement. It was immediately clear that due to the multiplication

  cation combined with the change of maneuvering, pressing the push button required excessive force on the plane

  approval (1 kg. or more) and a strengthening of the information

  version. - The second innovation resided in adding means interrupting the rinsing of the bowl (water saving) by intervening again on the wheelhouse ccm.:. Before the valve. With the draft controls, - 2- this new intervention was easy, which is no longer the

  same thing with push-button controls.

  Indeed, either this pusher is integral with the valve and then the latter remains depressed during the complete emptying, or it is not integral with it then the pusher rises but the wheelhouse remains depressed. In addition, the manufacturers of flushing mechanisms have realized that the floats intended to maintain the

  valve in high position while emptying the tank, finissaien-

  by falling back when the water level having dropped, their effective volume no longer compensated for the weight of the moving equipment of the mechanism Various improvements have been made to delay the descent of the latter, for example: - by locking this float in position high and by associating it with disarming means when the water reaches its low point (FR - A LEBOUCHARD no 1.506.551), - by enclosing the valve in an enclosure whose emptying is different from that of the tank, this enclosure can be constituted by a bell totally or sufficiently airtight so that the level of the water stored therein is kept high by depression

  (CH - A - HUBER n 302.469 or FR- A - SPHINX n 1.318.833).

  Such an enclosure can also be constituted by a simple reservoir enclosing a float and provided with a "leak" at its lower part and the flow of which conditions the flow of water and, consequently, the descent of the float secured to the valve.

  This leak being materialized by a hole presents the inconvenience

  deny of being able to be blocked impurities are present in the water.

  The present invention relates to a new structure operating at the press of a button and which comprises a movable float depending on the level of water in an enclosure, this float being such that its ascending force relieves the weight of the mobi crew:

  to the point of making acceptable the importance of the pressure to exert s.

  the push button, said float also serving to delay the descent of the valve, the control of which also includes means - 3 permitting to interrupt the emptying by a simple new pressure

on the pusher.

  Other features and advantages of the invention will appear

  on reading the claims made in support of the description

  which follows, made with reference to the appended drawings, in which: FIG. 1 is a diagrammatic view of a mechanism according to the invention, the parts being in the "closed valve" position, FIG. 2 is a similar diagrammatic view, the parts being in the "open valve" position, start of emptying of the water from the tank, FIG. 3 shows the parts in the next phase, at the moment when the float remounts the pusher, FIG. 3a is a partial profile view of the cap showing the ears, i15 Figure 4 is an enlarged view of the valve, Figure 5 is a partial view of the part of the bolt bowl and showing the notch allowing the leakage, Figure 6 represents the reverser, Figure 7 is a cross section made on the upper part

of the boltier cover.

  The mechanism which is the subject of the invention comprises a push button 1, a reversing device 2, a hollow float 3, a tubular boot 4, a valve carried by the float and closing the drain

for its low position.

  The float 3 is constituted by a cylindrical tube in a

  upper part 3a and by a bulb 3b at its lower part.

  The float 3 is enclosed in the tubular boot 4, which

  at the upper level of oules 4a is limited by a trans-

  verse 4th letting through the narrowed part 3c of the float 3 carrying

bulb 3b.

  The particularity of this assembly is that, on the one hand, the upper part 3a of the float is cylindrical with a constant diameter for its portion which can be of a level below the normal level of the water in the tank and that, on the other apart, the shoemaker 4 is also tubular and of an internal diameter hardly greater than the diameter

outside of said float.

  -4- In a groove, between the narrowed part 3c and the bulb 3b, the float 3 carries the seal 6 (possibly stiffened by a metal washer 6a). The boot 4 is fixed to the bottom wall of the tank R,) by a base 4c pierced with the discharge orifice, said wall being blocked against the plate 4b of this base which limits the ends 4a downwards by a nut 5 , which includes a

  bead 4d which serves as a seat for the valve formed by the seal 6.

  In its low position (Figure 1), the float 3 therefore closes the

  drain valve by its own weight if the tank R is empty.

  The filling of the tank R is traditionally done by a rocking valve subject to a second float (device nc: shown). By switching between 3 c and 4 g, the levels

  in the tank R and the annular channel B are balanced.

  If the tank is full, the force acting on the seal 6 includes, in addition to the weight of the float and its control, that of the water column enclosed in the annular channels A and B. If there is an overflow in R this is eliminated by passing through the

float hollow body.

  This one wears a hat 7 from which rise two ears 7a (FIG. 3a) facing each other) and each provided with a slit

vertical 7b.

  The reversing device (Figures 1, 6 and 7) comprises a part

  on which two symmetrical levers 9 and 10 revolve

  nant by a hook 9a (and 10a) intended to collaborate with the slots

ears 7.

  The levers 9 and 10 revolve in the parallel blanks of the cover 11 of the bolt case 4, the pins 12 being located between their connection with the body 8 and the hooks 9a (or 10a). In this way, the downward movement of this body 8 results in an increase in the

  hooks and, therefore, by a pull on the ears 7 pro-

  evoking the lifting of the float 3.

  The body 8 is connected to the pusher 1 by means of a wheelhouse 13 whose threaded part 13a screws into an adjusting nut 14 sliding in the bore of the body 8 (without being able to turn) and whose upper part 13b of cruciform cross section can move into accommodation

  of additional section dug in the pusher 1.

  -5- The housing 4, by its cover 11 is fixed to the cover R2 of the tank By a threaded tubular adjustment spacer 15 allowing variations in height of the tank. The height adjustment, by screwing or unscrewing the spacer 15 results in that of the wheelhouse 13 cus svisse or unscrews

  simil.tn-nen + t dnn. the adjusting nut 14.

  The pusher 1-can slide in this spacer, being

  returned to the high position by a spring 16.

  Advantageously, the pusher is housed in a base 17.

  It is easy to understand that if the pusher 1, 10 is pressed, the latter, by the rod 13 will push back the nut 14 which then drives the body 8 in its descent making the levers 9 and 10 of the position visible in Figure 1 to that of Figure 2. By their elevation, these levers raise the ears 7 and, therefore, the float 3 whose seal leaves the seat 4d and opens the passage to be the base 4c

  and the reservoir R by the openings 4a.

  Due to the gear reduction, the low depression of the pusher, corresponds to a large opening of the valve and this effortlessly, due to the low weight of the water column

acting on the joint.

  On the other hand, the flotation effect produced by the float 3 in the annular space B, the level of which drops only slowly,

  not only keeps the valve open, but also raises the valve

  ter the float until the upper face of the seal 6 comes to apply against the bead 4g of the partition 4e. Theoretically, this contact would oppose the emptying of the annular channel B, if the bead 4g did not include a notch (Figure 5) 4h authorizing a leak. Unlike the leaks produced by holes used in known devices, the 4h notch has little risk of being blocked by an impurity of the water, because it forms a horizontal passage and if it even gets clogged , the process

  of the float and therefore of the seal 6 would be sufficient to release it.

  In the ascent of the float 3, its cap, partially open, meets the nut 14 of the rod 13 which, in turn, rises

pusher 1 (figure 3).

  If, at this moment, we press this push-button 1 again, we descend

  dre the float since it is in abutment against the rod 13, its descent -6 opens the communication between B and A, the space B empties, the flotation ceases, the float falls back down and the valve closes, interrupting

  emptying and which saves water.

  As can be seen according to the invention, the float plays different roles, sometimes cataract. The inverter 2 can advantageously be molded in one piece (polypropylene) (Figures 6 and 7), the levers 9 and 10 being articulated on the wings 18 of the body 8 by two series of

  grooves 19-20, 19a-20a, allowing folds in both directions.

7 -

Claims (9)

R E V E N D I C A T I 0 N S   1 - Flushing mechanism for W.C. tank, supplied with water through a conventional valve provided with a float, said mechanism comprising a vertical tubular bolt (4), of which   the lower base (4C) through which the evacuation channel passes and communicates   as for the tank (R), by wide openings (4a) is fixed to the bottom (Ra) of this tank (R), a cylindrical float (3) sliding inside the casing (4), a valve of which the valve formed by a seal (6) is carried by the lower part (3b) of said float and the seat of which is formed by a bead (4d) bordering the periphery of the base drain orifice (4c), a wheelhouse ( 13 for lifting the float, to open the valve from an operating button (1), characterized in that the cylindrical float (2) consists, on the one hand, of an upper part (3a)   of large diameter open at the top and carrying no shoulder   LEMENT can come to be below the normal level (R1) of the EA in the tank (R) (in the valve closed position) and a lower part or appendage (3b, 3c) of smaller diameter bearing the seal (6) and, on the other hand, is concentric with said case (4), so that the annular space (B) formed between its outer part and the inner wall of said case is also reduced as possible.   2- Mechanism according to claim 1, characterized in that at a level barely higher than that of the upper part of the oules (4a), is located inside the boltier (4) a projection   annular (4th) letting through, with gentle friction, the appendix (3c).   3 - Mechanism according to claim 2, characterized in that this annular projection (4e) has its underside arranged to serve as a seat for the seal (6) in the highest position of the float (3).   4 - Mechanism according to claim 2, characterized in that this annular projection (4e) has a notch (4h) of calibrated dimensions allowing the timed emptying of space   ring (B) in the highest position of the float.   - Mechanism according to any one of the claims   previous, in which the control button (1) of the wheelhouse is a push button, said wheelhouse comprising a device   inverter (2) transforming the downward movement of said button-   pusher in an upward movement of the float, characterized in that this reverser (2) comprises a body (8) movable in height in which slides a bushing (14) provided with a body drive stop, said bushing being screwed onto the end   threaded rod (13), the second end of cross section   form or equivalent is engaged in the pusher (t) commanding   its descent in antagonism of a spring (16).   6 - Mechanism according to claim 5, characterized in that on the sides of the body (8) are articulated levers (9-10) pivoting in a fixed part, for example, a cover (11) of the   boot (4) by pins (12) located between their ends.   7 - Mechanism according to one of the preceding claims,   characterized in that the float (3) is provided with a perforated cap (7) carrying two vertical ears (7a) making   opposite and each pierced with a vertical slot (7b).   8- Mechanism according to claims 6 and 7, characterized   in that the free ends of the levers (9-10) curved in   hooks (9a-10a) are engaged in the slots (7b).   9 - Mechanism according to one of the preceding claims,   characterized in that the movable body (8), the levers (9-10) are made in a single piece of plastic material, the levers being able to be stiffened by an armature placed as an insert, the folds   being obtained by reducing the thickness of the material.   - Mechanism according to one of the preceding claims,   characterized in that at the moment when the flotation in space (B) causes the float (3) to rise, an element at the upper end of the latter meeting the control rod (13) or a part therefor being integral, so that this rise of the float is accompanied by that of the pusher (1) -9-   11 - Mechanism according to one of the preceding claims,   characterized in that the cover (11) of the housing (4) is secured to the cover (Rc) of the tank (R), by means of a threaded spacer. height adjustment (15) causing the adjustment of the wheelhouse (13) by its screwing or unscrewing in the nut (14).