FR2543990A1 - PUSH BUTTON CONTROLLED DISCHARGE DEVICE FOR A WATER FLUSHING TANK - Google Patents

Abstract

1. Flushing device operated by a push button, for a flushing tank, comprising a push button accessible at the exterior of the tank, a movement-reversing mechanism (4-5-6), a transmission member (9) constituted preferably by a tubular rod, and a valve (10), for closing the emptying opening (0) of the said tank, installed on the lower end of the said transmission member, characterised in that the said movement-reversing mechanism comprises a first rack (4) or driving rack integral with the push button (1) by its upper part or by an extension of its upper part and meshing with a pinion (5) which is itself in engagement with a second rack (6) or driven rack coupled to the transmission member (9) carrying the said closing valve (10), such that force exerted on the push button brings about the lifting of the closing valve and the opening of emptying opening.

Description

-1 - Evacuation device & i control by push button, for

tank

flush.

  The present invention relates to an evacuation device controlled by

  push button, for flush tank.

  Are known (American Patent NO 3,968,525) devices for evacuating cisterns, controlled by a push button, comprising a push button acting, when pressed, on a movement reversal system comprising a lever mounted with an ability to

  tilting on a load-bearing axle, one end of this lever receives

  vant the push of the push button while its opposite end is connected to the shutter valve of the tank emptying orifice, by means of a transmission member constituted by a chain Tne or a rigid rod. Such devices designed to supplant the evacuation systems provided with a control button acting by traction (which in particular has the disadvantage of being very exposed to risks of tearing),

  are affected by a number of disadvantages which constitute

  many obstacles to the progression of their popularization These disadvantages reside in particular:

  in that all button-operated evacuation systems-

  known pushers are relatively bulky, which is not conducive if we consider the reduced space available within the tank, the volume of water desirable for an efficient flushing process and the need to also house, in said tank, the float valve controlling the admission of water; in the fact that it is necessary to provide a special arrangement of the tank for the installation of the axis carrying the pivoting lever; in that some of their moving parts are oriented in different directions and move in non-parallel paths, so that they are not perfectly guided, which can be a cause of faulty operation; in the fact that it is necessary to maintain pressure on the push button during the flushing process, and that it is possible to interrupt this process by releasing this pressure which

  is incompatible with modern hygiene rules.

  -2 - An objective aimed by the present invention is therefore, in particular, to remedy the aforementioned drawbacks of the systems for evacuating flushing tanks provided with an operating mechanism acting

  by pressing a push button.

  According to the invention, this object is achieved by means of a device comprising a push button, a movement reversal mechanism, a transmission member and a valve for closing the tank drain orifice, this device being in particular remarkable by the fact that said movement reversal mechanism comprises a first rack or drive rack integral with the push button and meshing with a pinion, which is also engaged with a second rack or driven rack subject to the transmission member carrying said shutter valve. According to another characterizing arrangement, the pins of the bare pinion of its axis, are mounted with a-aptitude for movement in vertical openings that have a fixed support guide, while the lower portion of the rod carrying the shutter valve the drain orifice is equipped with a float advantageously constituted by a bell arranged concentrically around said lower portion, The push-button device according to the invention provides several advantages such as, for example: a reduced bulk, taking into account the the fact that all its constituent organs or groups of organs are brought together on a common axis; the uselessness of a particular arrangement of the tank, so that this device can be easily and advantageously substituted for the drainage systems comprising a control button acting by traction and already installed on tanks in service; a sfr and long-term operation resulting from the fact that all of its movable members move in parallel paths and are perfectly guided; the impossibility of interrupting the rinsing process when it has been started, which meets current hygiene standards, The above aims, characteristics and advantages, and others still,

  will emerge more clearly from the description which follows and from the attached drawings

in which 3 -

  Figure 1 is a partial axial sectional view of the evacuation device

  tion of flushing tank controlled by a push button according to the invention, which is illustrated in a position corresponding to the

closing of said device.

  FIG. 2 is a view in axial section of the only push button control mechanism of this device, shown positioned on the cover,

  partially shown, of a flush tank.

  Figure 3 is a vertical sectional view along line 3 = 3 of the

figure 2.

  Jo Figure 4 is a plan view and in section along line 4 4 of the

figure 2.

  Figure 5 is a plan view in section along line 5 5 of the

figure 2.

  Figures 6 to 8 are partial views, in axial section, illustrating

  the operation of the device according to the invention.

  Reference is made to said drawings to describe an advantageous embodiment,

  although in no way limiting, of the device according to the invention.

  This device comprises a push button 1, axially movable and vertically-

  ment, for example on a stroke of the order of 15 mmn This push button comprises a central nut 1a constituted by a cylindrical axial stud provided with a blind thread, and a lateral skirt 1b, by means of which it is guided in and on a setting button fjxé 2, This fixed button is integral

  an envelope 3 constituted by a cylindrical sleeve.

  Advantageously, the fixed button 2 and the sleeve 3 are assembled by screwing, said fixed button and the upper portion of said sleeve comprising, respectively, for this purpose, a complementary tapping and thread. On the other hand, the sleeve 3 is arranged vertically and it is provided with an external thread on at least its lower portion, inside said sleeve 3, is housed a mechanism for reversing movement, this mechanism comprises a first vertical rack 4 which is conventionally called "drive rack" in the remainder of this description, this rack being integral, in translation, with the movable push button 1, The drive rack and said push button are preferably assembled in a separable manner, by screwing, 'upper end of said rack being, for example, formed in one piece with a screw 4 screwed into the central nut

of the push button.

  The rack 4 meshes with a pinion 5 which is also engaged with a second rack 6 housed with a capacity for longitudinal translation in the sleeve 3 and which conventionally calls

  "rack and pinion entered 7" in the following descriptiono The rack and pinion

  4 and 6 are therefore arranged parallel and face to face They are guided in a support guide 7 fixedly installed in the sleeve 3, for example by means of a pin 8, This support guide is constituted by a part of generally cylindrical shape with two parallel grooves 7 a, 7 b diametrically opposite and separated by a partition 7 c

  in which a window 7 d is formed for the passage of the pinion 5.

  According to another important characteristic of the invention and the benefit of which is explained in the remainder of this description, the pinion 5 is mounted with the ability to move in the vertical plane. According to an interesting embodiment, the pins' 5 a of the pinion 5 or its axis are housed with the ability to move in opposite vertical slots 7 e, 7 f, respectively, which the support guide 7 has,

  These lights are provided in the opposite walls which delimit, laterally

  window 7, of which is slightly longer than

  that of said lights in order to authorize the movements of the pinion.

  The rack entered Snée 6 is secured, separable and adjustable,

  to the rod 9 carrying the valve 10 for closing the drain orifice of the -

  flushing tank The rack 6 is, for example, rigidly

  integral with a screw 6 disposed in the extension of its lower portion

  re and formed in a single piece with this eyelash The screw 6 a is screwed into a nut 9 a which is equipped, axially, the top of the rod 9 which is constituted by a cylindrical tube Thanks to this removable assembly method , the rack 6 and the tubular rod 9

are integral in translation.

  The valve 10 is constituted by a seal in the form of a circular crown installed in a peripheral groove which is provided with the lower end of the rod 9 The lower portion of the said rod is arranged so as to constitute a float, so known per se, this float is formed by a clocherl arranged around the lower portion of the rod 9 and the lower edge of which is placed above and at a reduced distance from the plane in which the upper face of the valve 10 is located. lower of the movement reversal mechanism and the valve holder float rods are housed in a tubular protective and guiding casing 12, The upper end of this casing is fitted with a cap 13 provided with a threaded axial orifice 13 a constituting a nut into which the sleeve 3 containing the reversing mechanism is screwed

of movement.

  The device according to the invention is also associated with a base 14 comprising a central orifice O constituting the emptying orifice of the reservoir and whose upper circular edge 14 forms the seat of the valve 10 This base, of a design known per se, is intended to be

  fixedly installed, by means of a nut screwing on its cylindrical portion

  threaded lower plate 14 b, on the drain opening 01 of the tank.

  it makes it possible to provide the junction between said discharge orifice and

  the inlet port for the rinsing water in the toilet cabinet bowl

  It is able to be assembled, in a removable manner, to the bell-shaped base 12 a of the casing or outer casing 12. For this purpose, the base comprises three locking forks 14 c oriented upwards, arranged equidistantly around and at a distance from the drain orifice O A space is reserved between the vertical branches of these forks allowing the passage of the lower edge of the outer bell 12 a resting in the bottom of said space, the locking being obtained by a rotation of the tubular casing 12-12 a making it possible to place the outer shoulders 12 b in the form of an arc of a circle which is provided with the base of said outer bell, above the retaining spout 14 d directed inwards which is provided with the outer branch of each fork, When the evacuation & control device by push button according to the invention is installed in a tank, it is assembled, using the previously described means, to the base 14 positioned in the discharge orifice 01 presented by the bottom 15 of the tank (partially represented in FIG. 1), while the upper portion of the sleeve 3 passes through the orifice 02 formed in the cover 16 (partially illustrated in FIGS. 1, 2, 6 , 7 and 8) of said reservoir, and that the fixed button 2 screwed on said upper portion bears on the upper face

of said cover.

  It is observed that thanks to the assembly by screwing, on the one hand, of the sleeve 3 and of the tubular casing 12, and, on the other hand, of the screw 6 has of the driven rack 6 and of the valve-holder rod 9 , it is possible to adapt 6 -

  easily, by a simple rotation of the button control mechanism-

  pusher, the height of the evacuation device according to the invention at the depth of the flush tank; the threads of said sleeve and of said screw having, for this purpose, an identical pitch and direction ,, It is understandable, after the foregoing description, the operation of the

  push button device according to the invention.

  During filling and inactivity phases (Figures 1 and 6), the button-

  pusher 1 is in the high position, while the valve 10 is pressed

in his seat 14 a.

  By pressing the push-button 1 on a stroke of the order of 15 mm, the drive rack 4 is pressed which communicates a rotational movement to the pinion 5 whose pins 5 a remain maintained in the bottom of the vertical lights 7 e, 7 fo The rotation of the pinion causes an upward movement of the driven rack 6, of amplitude equal to that of the downward travel of the drive rack (Figure 7) <

  The upward translation of the driven rack causes a trans-

  corresponding axial lation of the rod 9 and, consequently, the lifting of the valve 10 When the latter is detached from its seat 14 a, the upward thrust which is exerted on the float 11 makes it possible to anoint the said valve a little more from its seat, so as to completely release 12 drain port O and allow an effective flushing action This additional lifting of the valve 10 on a second stroke of the order of 15 imm is made possible by the fact that the pinion 5 driven by the additional upward stroke of the driven rack 6, can roll on the drive rack 4 immobilized by pressing the push button 1 on the button

  fixes 2 said pinion and its pins 5 a moving, during this movement

  ment, in the window 7 d and in the lights 7 e, 7 f, respectively, It is therefore understood that, thanks to the device according to the invention, the stroke of the push button 1 is limited to 15 nmo, while that of the '' rack and pinion assembly 6 rod 9-valve 10, is 30 mm and constituted by two successive movements, each having an amplitude of 15 mmo These movements are accomplished in a very short period of time.

  emptying process being initiated as soon as the button is pressed -

  push button, and then continuing automatically, without possibility

of interruption.

Z 543990

  7- At the end of the emptying process during which it is not necessary to keep pressing the push button, the valve 10 automatically returns to apply on its seat, the assembly 69-10 descending by effect of gravity, causing, in the first half of its downward travel, the descent of the pinion, then, during the second half of its travel, the ascent of the rack

  d 8 drive 4 and push button 1 integral with the latter.

8 -

R E V E N D I CATI ONS

  1 o Evacuation device with push button control, for flush tank, comprising a push button (1), a movement reversal mechanism (4-5-6), a transmission member (9 ) preferably constituted by a tubular rod, and a valve (10) for closing the emptying orifice (0) of said tank, installed on the lower end of said transmission member, characterized in that said mechanism reversal of movement comprises a first rack (4) or drive rack integral with the push button (1) and meshing with a pinion (5) which is also engaged with a second rack (6) or driven rack subject to the 'transmission member (9) carrying said shutter valve (10) o 2 Evacuation device controlled by push button, for flush tank, according to claim 1, characterized in that the pins (Sa ) of the pinion (5) or its axis, are mounted with ap: _ 15 titude displacement in vertical lights (7 e, 7 f) that presents

a fixed support guide (7).

  3 - Evacuation device controlled by a push button, for a flush tank, according to claim 2, characterized in that the lower portion of the rod (9) carrying the valve (10) for closing the orifice drain (0) is equipped with a float (11) which is, for example, constituted by a bell arranged concentrically around

said lower portion.

  4 Evacuation device with push button control, for tank

  toilet flush, according to one of claims 2 or 3, characterized in

  that the fixed support guide (7) has two grooves (7 a, 7 b) parallel, diametrically opposite and separated by a partition (7 d) in which is

  formed a window (7 d) for the passage and movements of the pinion (5).

  Drainage device with push button control, for tank

  flush, according to any one of claims 1 to 4, characterized

  in that the various organs of the movement reversal system (4, 6, 7) are housed in an envelope (3), preferably cylindrical, the upper part of which is secured to a fixed button (2) intended to

  press on the upper face of the tank cover (16).

  6, evacuation device controlled by a push button, for a flush tank, according to claim 5, comprising a casing (12) surrounding the valve-holding rod (9) and whose base (12 a) is intended to be assembled with a base (14) comprising a central orifice (0) constituting the emptying orifice of the tank and the upper circular edge (14a) of which forms the seat of the valve (10), characterized in that the cylindrical casing (3) and said casing (12) are assembled by screwing, said cylindrical casing comprising, for example, an external thread by means of which it is screwed into an axial orifice

  threaded (13 a) which is provided with the upper end (13) of said housing.

  7, Push button control evacuation device, for tank

  toilet flush, according to one of claims 5 or 6, characterized

  in that the fixed button (2) and the casing (3) in which the organs of the movement reversal mechanism (4, 5, 6, 7) are housed are assembled by screwing, the upper portion of said casing and said push-button being, for example, provided, respectively, with an external thread and a complementary tapping, 8, evacuation device controlled by push-button, for tank

  flush, according to any one of claims 1 to 7, charac-

  ; terized in that the driven rack (6) is secured by screwing to the valve stem (9), the lower end of said rack extending, for example, by a screw (6a), preferably formed by '' in one piece with the latter and screwed into a nut (9a) fitted

  axially the upper part of said rod.

  9 Evacuation device with push button control for tank

  toilet flush according to claims 6 and 8, characterized in that

  the thread of the cylindrical casing (3) and the thread of the screw (6 a) constituting the lower portion of the driven rack (6) have a

not and an identical meaning.

  Bo 10, Push button control evacuation device, for tank

  flush with water, according to any one of claims 1 to 9, charac-

  terized in that the fixed timing button (2) constitutes a stop member

  and guide for the mobile push button (1).