EP0520896A1 - Time control device for electrodomestic machine programmer - Google Patents

Time control device for electrodomestic machine programmer Download PDF

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Publication number
EP0520896A1
EP0520896A1 EP92401797A EP92401797A EP0520896A1 EP 0520896 A1 EP0520896 A1 EP 0520896A1 EP 92401797 A EP92401797 A EP 92401797A EP 92401797 A EP92401797 A EP 92401797A EP 0520896 A1 EP0520896 A1 EP 0520896A1
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EP
European Patent Office
Prior art keywords
pawl
inhibition
cam
programming
levers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92401797A
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German (de)
French (fr)
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EP0520896B1 (en
Inventor
Jean Vollot
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Noalia Solutions SA
Original Assignee
Thales Avionics SAS
Crouzet Appliance Controls SA
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Application filed by Thales Avionics SAS, Crouzet Appliance Controls SA filed Critical Thales Avionics SAS
Publication of EP0520896A1 publication Critical patent/EP0520896A1/en
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Publication of EP0520896B1 publication Critical patent/EP0520896B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
    • H01H43/101—Driving mechanisms
    • H01H43/102—Driving mechanisms using a pawl and ratchet wheel mechanism

Definitions

  • the present invention relates to a timer device for a programmer of an electrical household appliance comprising a block of programming cams driven in stepwise rotation, a reversing cam driven in continuous rotation, a pawl tilting in a position for driving the block of cams. at least twice per revolution of the reversing cam, the device comprising means for inhibiting said pawl and means for controlling said inhibiting means, for inhibiting the pawl a determined number of times at each revolution of the cam d 'inversion.
  • washing machines for washing clothes or dishes.
  • a set or block of program cams intended to actuate contact carrier blades, can be driven in step-by-step rotation, by means of a particular device, comprising a so-called reversing cam and a drive pawl.
  • the washing programs are thus determined by the profiles of the program cams, their rotation and their stopping.
  • the reversing cam in the form of a sleeve and having an internal toothing, is permanently driven by a synchronous motor, during the course of the program.
  • the cam block's drive pawl driven in an eccentric movement, cooperates, under the effect of a leaf spring, with a solid circular crown, called masking crown, and integral with the reversing cam , in which a number of windows are made.
  • masking crown solid circular crown
  • the pawl meets a window of said masking crown, during the continuous rotation of the reversing cam, it partially engages in it and, still under the effect of the leaf spring, then cooperates with a toothing interior of the cam block, to drive it from a given angular position to an adjacent angular position.
  • the number of windows in the masking ring thus determines the number of possible drives of the block of cams in rotation by one step, for each rotation of one revolution of the reversing cam.
  • the programmer also includes timing devices, comprising pawl inhibiting means, to prevent the pawl from driving the cam block , and control means of said inhibiting means, for inhibiting the pawl a determined number of times at each rotation of one revolution of the reversing cam.
  • timing devices there are generally, for technical reasons, two timing devices in a programmer, a first device for obtaining so-called “short” timers and a second device for obtaining so-called “long” timers .
  • a time delay is said to be short when it does not exceed the duration of one revolution of the reversing cam. Conversely, a long delay is greater than the duration of one revolution of the reversing cam.
  • the pawl is therefore doubly controlled by the two timing devices mentioned above, the short timing device producing effect only insofar as the long timing device does not keep the pawl inhibited.
  • Short-time delay devices are already known, the means for controlling the means of initiating them comprising a so-called timing cam, integral in rotation with the block of cams and comprising a peripheral profile at several levels.
  • control means also comprise a follower lever, which comes to bear on the peripheral profile of the timing cam.
  • control means constitute cumbersome kinematics in itself, because the follower lever must be disposed at the periphery of the cam block and it therefore occupies a volume which is not negligible.
  • the known inhibition means are also relatively bulky, since they comprise, in addition to the elements intended to inhibit the pawl, an intermediate kinematics making it possible to determine the duration of inhibition of the pawl as a function of the position of the follower lever.
  • the Applicant has therefore sought to design a short time delay device of reduced size and whose control and inhibition kinematics are simplified as much as possible.
  • the present invention relates to a device of the type defined above, characterized in that said inhibiting means comprise a plurality of levers for inhibiting said pawl, each pivoting about an axis integral with a driven rotary disc in rotation by the reversing cam, each comprising means for cooperating with said pawl, and elastic return means towards a rest position, said control means being arranged to pivot the inhibition levers in a tilted position.
  • said control means comprise a plurality of programming fingers disposed on a second rotary disc driven in rotation by the cam block and arranged to cooperate with at least one of said inhibition levers.
  • said programming fingers are arranged in a plurality of circles concentric with each other and centered on the rotation shaft of said second disc, said inhibition levers being arranged to cooperate each with one of said circles of finger fingers programming.
  • the device of the invention is arranged within a washing machine programmer 1, which comprises a block of program cams 2 and a reversing cam 3.
  • the reversing cam 3 is driven in rotation at constant speed by the last pinion 4 of a group of gears reducing the speed of rotation of the shaft of a synchronous motor.
  • an internal toothing 5 of the reversing cam 3 cooperates with the toothing 6 of the pinion 4.
  • the pinion 4 is integral with a toothed wheel 7, which cooperates with the abovementioned reduction group and thus drives the pinion 4 in rotation.
  • the cam block 2 is driven in step-by-step rotation around a shaft 10, common to the reversing cam 3, by a specific drive kinematics, comprising a pawl 11 cooperating with the reversing cam 3.
  • the reversing cam 3 and the cam block 2 each have a sleeve-shaped part, respectively 12, 13.
  • the sleeve 12 of the reversing cam 3 is partially engaged in the sleeve 13 of the cam block 2, all maintaining sufficient clearance to avoid friction with the sleeve 13.
  • a region of the sleeve 12 defining a cylindrical crown four windows, or slots 14, are formed, angularly arranged at equal distance from each other.
  • the pawl 11, pivoting about an axis 18 mounted eccentrically on the pinion 4, has an end 19, in the form of a beak, which is held, under the effect of a leaf spring 20 (FIG. 3), against the inside the sleeve 12 of the reversing cam 3, in the region corresponding to the cylindrical ring in which the windows 14 mentioned above are made.
  • the spout 19 engages therein, under the effect of the spring blade 20, and comes into contact with a ratchet toothing 21 formed over the entire internal circumference of the sleeve 13.
  • timing device of the invention intervenes to keep the pawl 11 retracted, or inhibited, a certain number of times per revolution of the reversing cam 3.
  • the device of the invention aims to obtain short time delays, that is to say less than or at most equal to the duration of one revolution of the reversing cam 3.
  • the respective sleeves 12 and 13 of the reversing cam 3 and of the cam block 2 each comprise, first of all, a bottom, or partition 120, 130, substantially in the form of a disc.
  • the partitions 120 and 130 are arranged near the respective ends of the two sleeves 12 and 13, so as to be face to face when the sleeve 12 of the reversing cam 3 is engaged in the sleeve 13 of the cam block 2.
  • the partition 120 of the sleeve 12 is driven in continuous rotation by the reversing cam 3, and the partition 130 of the sleeve 13, integral with the cam block 2, is most of the time immobile, except during the rotations of a step of the cam block 2.
  • Each inhibition lever 30 can pivot around a torsion axis 31, disposed in the plane formed by the partition 120, and obtained, here, at the same time as the levers 30, that is to say during the molding of the partition 120.
  • each inhibition lever 30 is held, by its torsion axis 31, in a plane slightly inclined relative to the wall 120.
  • Each inhibition lever 30 has two ends 32, 34, on either side of the axis 31, the end 34 being directed towards the partition 130 of the cam block 2, due to the inclination of each inhibition lever 30 relative to the wall 120, the end 32 then being directed in an opposite direction, that is to say towards the pawl 11 (FIG. 1).
  • ends 34 each carry an appendage 35, rising substantially perpendicular to the plane formed by each inhibition lever 30 and directed towards the wall 130 of the cam block 2.
  • the appendages 35 are respectively arranged at different distances r1, r2, r3, r4 from the axis of rotation 100, and each occupy a surface corresponding to an angular sector ⁇ of a fictitious circular crown of average radius r1, r2, r3 , or r4.
  • each end 32 of the inhibition levers 30 carries an inhibition appendage 33 of the pawl 11, of circular section, rising substantially perpendicular to the plane formed by each lever 30 and oriented towards the pawl 11.
  • Each appendage 33 is disposed at the same distance from the axis of rotation 100 of the reversing cam 3. Thus, when the reversing cam 3 is in rotation, the inhibiting appendages 33 travel on identical circular paths.
  • the device of the invention further comprises timing programming elements 350, here fingers, arranged, perpendicular to it, on the wall 130 of the sleeve 13 of the cam block 2, oriented towards the wall 120 comprising the levers inhibition 30 and extending to a distance allowing them to cooperate with the appendages 35 of the inhibition levers 30.
  • the programming fingers 350 are arranged circularly around the axis of rotation 100, in four concentric circles of respective radii r1, r2, r3, r4, so as to be on the paths swept by the appendages 35 of the inhibition levers 30, when the reversing cam 3 is in rotation.
  • the arrangement of the programming fingers 350 is determined by a mathematical division of the four circles of radii r1 to r4, into a sum of identical angular sectors, of angle ⁇ already mentioned, each angular sector thus defining four possible locations for the fingers.
  • programming 350 All the locations thus determined do not necessarily include a programming finger 350, but each angular sextor ⁇ must however include at least one programming finger, in one of the four possible locations, to guarantee the advance of the cam block, as this will be described below.
  • the appendages 35 and the programming fingers 350 each have a ramp-shaped profile, respectively 36 for the appendages 35 and 351 for the programming fingers 350 (FIG. 1), so that the profiles 36 of the appendages 35 and the profiles 351 of the fingers programming 350 are opposite and cooperate, when the appendages 35 meet the programming fingers 350, during the rotation of the reversing cam 3.
  • angle ⁇ corresponds to the angular displacements made by the cam block 2 during its rotation step by step.
  • the pawl 11 comprises an appendages 44, of circular section, rising perpendicular to the pawl 11, directed in the direction of the inhibition levers 30 and ending in a plan comprising the inhibition appendages 33, so as to cooperate by sliding, under certain conditions described below, with the inhibition appendages 33 of the rockers 30.
  • the inhibition levers 30 are driven by oscillating movements around their torsion axes 31, while traversing circular paths around the rotation shaft 10 of the reversing cam 3.
  • the inhibition levers 30 pass successively, on their circular trajectory, an angular synchronization sector, in which their inhibition appendages 33 can cooperate, by sliding, with the appendage 44 of the pawl 11, and thus inhibit the pawl 11.
  • the device of the invention is calibrated so that the synchronization sector is encountered by an inhibiting lever 30 from the moment the pawl 11 meets a window 14, to drive the block of cams 2. At each window 14 therefore corresponds to a determined inhibition lever 30.
  • FIGS. 3 and 4 illustrate a situation in which an inhibition lever 30 meets the synchronization sector.
  • the synchronization sector is shown diagrammatically by an axis 100-110, the synchronization sector being encountered by an inhibiting lever 30 when an appendage 35 crosses this axis 100-110.
  • the appendage 35 of the lever 30 does not meet a programming finger 350 during the crossing of the synchronization axis 100-110.
  • the lever 30 remains in the position determined by its torsion axis 31, that is to say the inhibition position.
  • the inhibition appendage 33 of the inhibition lever 30 then cooperates, by sliding, with the appendage 44 of the pawl 11, the pawl 11 being held in a position in which the spout 19 cannot engage in the window 14 facing him.
  • the appendix 35 of the inhibition lever 30 encounters a programming finger 350, during the crossing of the synchronization axis 100-110, the inhibition lever 30 switches in a retracted position, the inhibition appendage 33 disappears under the appendage 44 of the pawl 11 and can therefore no longer cooperate with the pawl 11.
  • the spout 19 of the pawl 11 engages in the window 14 and drives the cam block 2 in rotation by an angle ⁇ , thus making coincide with the synchronization sector a new angular sector ⁇ of programming fingers 350 , for a new delay.
  • the presence of a programming finger 350 in the synchronization sector would mean inhibition of the pawl 11 and, conversely, the inhibition levers 30 would be kept retracted by their torsion axis 31 in the absence of fingers programming 350.
  • each time delay depends on the relative arrangement of the programming fingers 350, between the adjacent angular sectors ⁇ .
  • the device of the invention advantageously makes it possible to overcome known bulky kinematics, by abandoning the principle of programming timers by cam with peripheral profile and by proposing a new inhibition kinematics making it possible to directly transform the information contained on the block of cams, here the programming fingers 350, in movements to inhibit the pawl 11.
  • a programmer comprising the device of the invention can also receive, in addition, a long time delay device, multiple of the basic time delay corresponding to an inversion cam turn.

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  • Devices For Executing Special Programs (AREA)

Abstract

The device makes it possible to disable a click (11) for driving a programming cam unit (2), a specified number of times with each rotation by one revolution of a reverser cam (3). The device comprises a plurality of disabling levers (30) arranged on a partition (120) of the reverser cam (3) and cooperating with fingers (350) arranged on a partition (130) of the cam unit (2). The invention applies in particular to the programmers for dishwashers or washing machines. <IMAGE>

Description

La présente invention concerne un dispositif de temporisation pour programmateur de machine électrodomestique comprenant un bloc de cames de programmation entraîné en rotation pas à pas, une came d'inversion entraînée en rotation continue, un cliquet basculant dans une position d'entraînement du bloc de cames au moins deux fois par tour de la came d'inversion, le dispositif comprenant des moyens d'inhibition dudit cliquet et des moyens de commande desdits moyens d'inhibition, pour inhiber le cliquet un nombre de fois déterminé à chaque tour de la came d'inversion.The present invention relates to a timer device for a programmer of an electrical household appliance comprising a block of programming cams driven in stepwise rotation, a reversing cam driven in continuous rotation, a pawl tilting in a position for driving the block of cams. at least twice per revolution of the reversing cam, the device comprising means for inhibiting said pawl and means for controlling said inhibiting means, for inhibiting the pawl a determined number of times at each revolution of the cam d 'inversion.

Comme machines électrodomestiques auxquelles peut s'appliquer l'invention, on peut citer les machines à laver le linge ou la vaisselle.As household electrical appliances to which the invention may apply, mention may be made of washing machines for washing clothes or dishes.

Dans un programmateur classique, un ensemble ou bloc de cames-programmes , destiné à actionner des lames porte-contact, peut être entraîné en rotation pas à pas, par l'intermédiaire d'un dispositif particulier, comportant une came dite d'inversion et un cliquet d'entraînement. Les programmes de lavage sont ainsi déterminés par les profils des cames-programmes, leur rotation et leur arrêt.In a conventional programmer, a set or block of program cams, intended to actuate contact carrier blades, can be driven in step-by-step rotation, by means of a particular device, comprising a so-called reversing cam and a drive pawl. The washing programs are thus determined by the profiles of the program cams, their rotation and their stopping.

La came d'inversion, en forme de manchon et comportant une denture intérieure, est en permanence entraînée par un moteur synchrone, pendant le déroulement du programme.The reversing cam, in the form of a sleeve and having an internal toothing, is permanently driven by a synchronous motor, during the course of the program.

Le cliquet d'entraînement du bloc de-cames, animé d'un mouvement excentrique, coopère, sous l'effet d'une lame-ressort, avec une couronne circulaire pleine, dite couronne de masquage, et solidaire de la came d'inversion, dans laquelle sont pratiquées un certain nombre de fenêtres. Lorsque le cliquet rencontre une fenêtre de ladite couronne de masquage, pendant la rotation continue de la came d'inversion, il s'engage partiellement dans celle-ci et, toujours sous l'effet de la lame-ressort, coopère alors avec une denture intérieure du bloc de cames, pour entraîner celui-ci d'une position angulaire donnée vers une position angulaire adjacente.The cam block's drive pawl, driven in an eccentric movement, cooperates, under the effect of a leaf spring, with a solid circular crown, called masking crown, and integral with the reversing cam , in which a number of windows are made. When the pawl meets a window of said masking crown, during the continuous rotation of the reversing cam, it partially engages in it and, still under the effect of the leaf spring, then cooperates with a toothing interior of the cam block, to drive it from a given angular position to an adjacent angular position.

Le nombre de fenêtres pratiquées dans la couronne de masquage détermine ainsi le nombre d'entraînements possibles du bloc de cames en rotation d'un pas, pour chaque rotation d'un tour de la came d'inversion.The number of windows in the masking ring thus determines the number of possible drives of the block of cams in rotation by one step, for each rotation of one revolution of the reversing cam.

Cependant, pour faire varier les intervalles de temps séparant chaque rotation d'un pas du bloc de cames, le programmateur comprend aussi des dispositifs de temporisation, comprenant des moyens d'inhibition du cliquet, pour empêcher le cliquet d'entraîner le bloc de cames, et des moyens de commande desdits moyens d'inhibition, pour inhiber le cliquet un nombre de fois déterminé à chaque rotation d'un tour de la came d'inversion.However, to vary the time intervals separating each rotation by one step from the cam block, the programmer also includes timing devices, comprising pawl inhibiting means, to prevent the pawl from driving the cam block , and control means of said inhibiting means, for inhibiting the pawl a determined number of times at each rotation of one revolution of the reversing cam.

Il faut ici préciser qu'il existe généralement, pour des raisons techniques, deux dispositifs de temporisation dans un programmateur, un premier dispositif permettant d'obtenir des temporisations dites "courtes" et un deuxième dispositif permettant d'obtenir des temporisations dites "longues".It should be noted here that there are generally, for technical reasons, two timing devices in a programmer, a first device for obtaining so-called "short" timers and a second device for obtaining so-called "long" timers .

Par définition, une temporisation est dite courte lorsqu'elle n'excède pas la durée d'un tour de la came d'inversion. Inversement, une temporisation longue est supérieure à la durée d'un tour de la came d'inversion.By definition, a time delay is said to be short when it does not exceed the duration of one revolution of the reversing cam. Conversely, a long delay is greater than the duration of one revolution of the reversing cam.

Le cliquet est donc doublement commandé par les deux dispositifs de temporisation cités ci-dessus, le dispositif de temporisation courte ne produisant effet que dans la mesure où le dispositif de temporisation longue ne maintient pas le cliquet inhibé.The pawl is therefore doubly controlled by the two timing devices mentioned above, the short timing device producing effect only insofar as the long timing device does not keep the pawl inhibited.

On connaît déjà des dispositifs de temporisation courte, dont les moyens de commande des moyens d'inhition comprennent une came dite de temporisation, solidaire en rotation du bloc de cames et comportant un profil périphérique à plusieurs niveaux.Short-time delay devices are already known, the means for controlling the means of initiating them comprising a so-called timing cam, integral in rotation with the block of cams and comprising a peripheral profile at several levels.

Généralement, les moyens de commande comprennent aussi un levier suiveur, qui vient en appui sur le profil périphérique de la came de temporisation.Generally, the control means also comprise a follower lever, which comes to bear on the peripheral profile of the timing cam.

Les moyens de commande constituent une cinématique encombrante en elle-même, car le levier suiveur doit être disposé à la périphérie du bloc de cames et il occupe de ce fait un volume qui n'est pas négligeable.The control means constitute cumbersome kinematics in itself, because the follower lever must be disposed at the periphery of the cam block and it therefore occupies a volume which is not negligible.

Les moyens d'inhibition connus sont aussi relativement encombrants, car ils comportent, outre les éléments destinés à inhiber le cliquet, une cinématique intermédiaire permettant de déterminer la durée d'inhibition du cliquet en fonction de la position du levier suiveur.The known inhibition means are also relatively bulky, since they comprise, in addition to the elements intended to inhibit the pawl, an intermediate kinematics making it possible to determine the duration of inhibition of the pawl as a function of the position of the follower lever.

La demanderesse a donc cherché à concevoir un dispositif de temporisation courte d'encombrement réduit et dont les cinématiques de commande et d'inhibition sont simplifiées autant que possible.The Applicant has therefore sought to design a short time delay device of reduced size and whose control and inhibition kinematics are simplified as much as possible.

Ainsi, la présente invention concerne un dispositif du type défini ci-dessus, caractérisé par le fait que lesdits moyens d'inhibition comprennent une pluralité de leviers d'inhibition dudit cliquet, pivotant chacun autour d'un axe solidaire d'un disque rotatif entraîné en rotation par la came d'inversion, comprenant chacun des moyens de coopération avec ledit cliquet, et des moyens de rappel élastique vers une position de repos, lesdits moyens de commande étant agencés pour faire pivoter les leviers d'inhibition dans une position basculée.Thus, the present invention relates to a device of the type defined above, characterized in that said inhibiting means comprise a plurality of levers for inhibiting said pawl, each pivoting about an axis integral with a driven rotary disc in rotation by the reversing cam, each comprising means for cooperating with said pawl, and elastic return means towards a rest position, said control means being arranged to pivot the inhibition levers in a tilted position.

Avantageusement, lesdits moyens de commande comprennent une pluralité de doigts de programmation disposés sur un deuxième disque rotatif entraîné en rotation par le bloc de cames et agencés pour coopérer avec au moins l'un desdits leviers d'inhibition.Advantageously, said control means comprise a plurality of programming fingers disposed on a second rotary disc driven in rotation by the cam block and arranged to cooperate with at least one of said inhibition levers.

Avantageusement encore, lesdits doigts de programmation sont disposés en une pluralité de cercles concentriques les uns aux autres et centrés sur l'arbre de rotation dudit deuxième disque, lesdits leviers d'inhibition étant agencés pour coopèrer chacun avec l'un desdits cercles de doigts de programmation.Also advantageously, said programming fingers are arranged in a plurality of circles concentric with each other and centered on the rotation shaft of said second disc, said inhibition levers being arranged to cooperate each with one of said circles of finger fingers programming.

L'invention sera mieux comprise à l'aide de la description suivante de la forme de réalisation préférée de l'invention, faite en référence aux dessins annexés, sur lesquels :

  • la figure 1 représente, de façon schématique, une vue en coupe d'un programmateur de machine à laver comprenant le dispositif de l'invention ;
  • la figure 2 est une vue axiale de la came d'inversion et d'une partie du dispositif de l'invention ;
  • la figure 3 est une vue axiale du programmateur de la figure 1, lorsque le dispositif de l'invention maintient le cliquet inhibé et
  • la figure 4 est une vue axiale du programmateur de la figure 1, lorsque le dispositif de l'invention autorise le cliquet à entraîner le bloc de cames.
The invention will be better understood with the aid of the following description of the preferred embodiment of the invention, given with reference to the appended drawings, in which:
  • Figure 1 shows, schematically, a sectional view of a washing machine programmer comprising the device of the invention;
  • Figure 2 is an axial view of the reversing cam and part of the device of the invention;
  • FIG. 3 is an axial view of the programmer of FIG. 1, when the device of the invention keeps the pawl inhibited and
  • Figure 4 is an axial view of the programmer of Figure 1, when the device of the invention allows the pawl to drive the cam block.

En référence à la figure 1, le dispositif de l'invention est disposé au sein d'un programmateur 1 de machine à laver, qui comprend un bloc de cames-programmes 2 et une came d'inversion 3. La came d'inversion 3 est entraînée en rotation à vitesse constante par le dernier pignon 4 d'un groupe d'engrenages réducteurs de la vitesse de rotation de l'arbre d'un moteur synchrone.With reference to FIG. 1, the device of the invention is arranged within a washing machine programmer 1, which comprises a block of program cams 2 and a reversing cam 3. The reversing cam 3 is driven in rotation at constant speed by the last pinion 4 of a group of gears reducing the speed of rotation of the shaft of a synchronous motor.

Plus précisément, une denture intérieure 5 de la came d'inversion 3 coopère avec la denture 6 du pignon 4. Le pignon 4 est solidaire d'une roue dentée 7, laquelle coopère avec le groupe réducteur sus-mentionné et entraîne ainsi le pignon 4 en rotation.More specifically, an internal toothing 5 of the reversing cam 3 cooperates with the toothing 6 of the pinion 4. The pinion 4 is integral with a toothed wheel 7, which cooperates with the abovementioned reduction group and thus drives the pinion 4 in rotation.

Le bloc de cames 2 est entraîné en rotation pas-à-pas autour d'un arbre 10, commun à la came d'inversion 3, par une cinématique d'entraînement ,particulière, comprenant un cliquet 11 coopérant avec la came d'inversion 3.The cam block 2 is driven in step-by-step rotation around a shaft 10, common to the reversing cam 3, by a specific drive kinematics, comprising a pawl 11 cooperating with the reversing cam 3.

La came d'inversion 3 et le bloc de cames 2 comportent chacun une partie en forme de manchon, respectivement 12, 13. Le manchon 12 de la came d'inversion 3 est partiellement engagé dans le manchon 13 du bloc de cames 2, tout en conservant un jeu suffisant pour éviter tout frottement avec le manchon 13.The reversing cam 3 and the cam block 2 each have a sleeve-shaped part, respectively 12, 13. The sleeve 12 of the reversing cam 3 is partially engaged in the sleeve 13 of the cam block 2, all maintaining sufficient clearance to avoid friction with the sleeve 13.

Dans une région du manchon 12 définissant une couronne cylindrique, sont pratiquées quatre fenêtres, ou lumières 14, disposées angulairement à égale distance les unes des autres.In a region of the sleeve 12 defining a cylindrical crown, four windows, or slots 14, are formed, angularly arranged at equal distance from each other.

Le cliquet 11, pivotant autour d'un axe 18 monté excentré sur le pignon 4, comporte une extrémité 19, en forme de bec, qui est maintenue, sous l'effet d'une lame-ressort 20 (figure 3), contre l'intérieur du manchon 12 de la came d'inversion 3, dans la région correspondant à la couronne cylindrique dans laquelle sont pratiquées les fenêtres 14 mentionnées ci-dessus.The pawl 11, pivoting about an axis 18 mounted eccentrically on the pinion 4, has an end 19, in the form of a beak, which is held, under the effect of a leaf spring 20 (FIG. 3), against the inside the sleeve 12 of the reversing cam 3, in the region corresponding to the cylindrical ring in which the windows 14 mentioned above are made.

Lorsque le pignon 4 entraîne la came d'inversion 3 en rotation continue, le cliquet 11 est animé d'un mouvement excentrique, le bec 19 du cliquet 11 glisse sur le manchon 12 jusqu'à rencontrer l'une des quatre fenêtres 14.When the pinion 4 drives the reversing cam 3 in continuous rotation, the pawl 11 is driven in an eccentric movement, the spout 19 of the pawl 11 slides on the sleeve 12 until it meets one of the four windows 14.

Dès lors qu'une fenêtre est rencontrée, le bec 19 s'engage dans celle-ci, sous l'effet de la lame ressort 20, et vient en contact avec une denture à rochet 21 pratiquée sur toute la circonférence interne du manchon 13.As soon as a window is encountered, the spout 19 engages therein, under the effect of the spring blade 20, and comes into contact with a ratchet toothing 21 formed over the entire internal circumference of the sleeve 13.

Puis, sous l'effet conjugué du mouvement excentrique du cliquet 11 et de la lame-ressort 20, le bec 19 exerce une poussée sur la denture à rochet 21, le bloc de cames 2 effectuant alors un déplacement en rotation d'un pas, pour occuper une nouvelle position angulaire correspondant à une nouvelle étape d'un cycle de lavage.Then, under the combined effect of the eccentric movement of the pawl 11 and the leaf spring 20, the spout 19 exerts a thrust on the ratchet teeth 21, the cam block 2 then performing a rotation movement of one step, to occupy a new angular position corresponding to a new stage of a washing cycle.

Il faut ici préciser que tous les éléments décrits, permettant l'entrainement pas-à-pas du bloc de cames 2, sont correctement synchronisés.It should be noted here that all of the elements described, allowing step-by-step training of the cam block 2, are correctly synchronized.

En considérant le dispositif d'entraînement du bloc de cames tel que décrit ci-dessus , on remarquera que l'entraînement en rotation d'un pas, du bloc de cames 2, doit se produire tous les quarts de tour de la came d'inversion 3, lorsque le cliquet 11 rencontre l'une des quatre fenêtres 14.Considering the device for driving the cam block as described above, it will be noted that the driving in rotation of one step, of the cam block 2, must occur every quarter turn of the cam. inversion 3, when the pawl 11 meets one of the four windows 14.

Cependant, le dispositif de temporisation de l'invention, décrit ci-après, intervient pour maintenir le cliquet 11 escamoté, ou inhibé, un certain nombre de fois par tour de la came d'inversion 3.However, the timing device of the invention, described below, intervenes to keep the pawl 11 retracted, or inhibited, a certain number of times per revolution of the reversing cam 3.

On notera tout d'abord, que le dispositif de l'invention vise à obtenir des temporisations courtes, c'est à dire inférieures ou au maximum égales à la durée d'un tour de la came d'inversion 3.First of all, it will be noted that the device of the invention aims to obtain short time delays, that is to say less than or at most equal to the duration of one revolution of the reversing cam 3.

Ainsi, dans le programmateur décrit ci-dessus, on peut obtenir tout au plus quatre valeurs différentes de temporisations courtes, correspondant respectivement à un quart de tour, un demi tour, trois quart de tour et un tour de la came d'inversion 3.Thus, in the programmer described above, it is possible to obtain at most four different values of short timers, corresponding respectively to a quarter turn, a half turn, three quarter turn and a turn of the reversing cam 3.

Les manchons respectifs 12 et 13 de la came d'inversion 3 et du bloc de cames 2 comportent chacun et tout d'abord un fond, ou cloison 120, 130, sensiblement en forme de disque.The respective sleeves 12 and 13 of the reversing cam 3 and of the cam block 2 each comprise, first of all, a bottom, or partition 120, 130, substantially in the form of a disc.

Les cloisons 120 et 130 sont disposées à proximité des extrémités respectives des deux manchons 12 et 13, de façon à être face à face lorsque le manchon 12 de la came d'inversion 3 est engagé dans le manchon 13 du bloc de cames 2.The partitions 120 and 130 are arranged near the respective ends of the two sleeves 12 and 13, so as to be face to face when the sleeve 12 of the reversing cam 3 is engaged in the sleeve 13 of the cam block 2.

La cloison 120 du manchon 12 est entraînée en rotation continue par la came d'inversion 3, et la cloison 130 du manchon 13, solidaire du bloc de cames 2, est la plupart du temps immobile, sauf pendant les rotations d'un pas du bloc de cames 2.The partition 120 of the sleeve 12 is driven in continuous rotation by the reversing cam 3, and the partition 130 of the sleeve 13, integral with the cam block 2, is most of the time immobile, except during the rotations of a step of the cam block 2.

En référence à la figure 2, représentant la came d'inversion 3 dans le plan de la cloison 120, quatre leviers 30 d'inhibition du cliquet 11, de forme longitudinale et sensiblement plats, sont formés dans la cloison 120, ici lors du moulage de celle-ci, à des distances identiques de l'axe 100 de l'arbre de rotation 10 de la came d'inversion 3 et à égale distance les uns des autres.With reference to FIG. 2, showing the reversing cam 3 in the plane of the partition 120, four levers 30 for inhibiting the pawl 11, of longitudinal shape and substantially flat, are formed in the partition 120, here during molding from it, at identical distances from the axis 100 of the rotation shaft 10 of the reversing cam 3 and at equal distance from each other.

Chaque levier d'inhibition 30 peut pivoter autour d'un axe de torsion 31, disposé dans le plan formé par la cloison 120, et obtenu, ici, en même temps que les leviers 30, c'est à dire lors du moulage de la cloison 120.Each inhibition lever 30 can pivot around a torsion axis 31, disposed in the plane formed by the partition 120, and obtained, here, at the same time as the levers 30, that is to say during the molding of the partition 120.

Au repos, chaque levier d'inhibition 30 est maintenu, par son axe de torsion 31, dans un plan légèrement incliné par rapport à la paroi 120. Chaque levier d'inhibition 30 comporte deux extrémités 32, 34, de part et d'autre de l'axe 31, l'extrémité 34 étant dirigée vers la cloison 130 du bloc de cames 2, du fait de l'inclinaison de chaque levier d'inhibition 30 par rapport à la paroi 120, l'extrémité 32 étant alors dirigée dans un sens opposé, c'est à dire vers le cliquet 11 (figure 1).At rest, each inhibition lever 30 is held, by its torsion axis 31, in a plane slightly inclined relative to the wall 120. Each inhibition lever 30 has two ends 32, 34, on either side of the axis 31, the end 34 being directed towards the partition 130 of the cam block 2, due to the inclination of each inhibition lever 30 relative to the wall 120, the end 32 then being directed in an opposite direction, that is to say towards the pawl 11 (FIG. 1).

En outre, les extrémités 34 portent chacune un appendice 35, s'élevant sensiblement perpendiculairement au plan formé par chaque levier d'inhibition 30 et dirigé vers la paroi 130 du bloc de cames 2.In addition, the ends 34 each carry an appendage 35, rising substantially perpendicular to the plane formed by each inhibition lever 30 and directed towards the wall 130 of the cam block 2.

Les appendices 35 sont respectivement disposés à des distances différentes r1, r2, r3, r4 de l'axe de rotation 100, et occupent chacun une surface correspondant à un secteur angulaire α d'une couronne circulaire fictive de rayon moyen r1, r2, r3, ou r4.The appendages 35 are respectively arranged at different distances r1, r2, r3, r4 from the axis of rotation 100, and each occupy a surface corresponding to an angular sector α of a fictitious circular crown of average radius r1, r2, r3 , or r4.

En considérant la partie du dispositif décrite jusqu'ici, on comprendra que lors de la rotation continue du bloc de cames 3 et de la paroi 130, c'est à dire lorsque le programmateur 1 est en fonctionnement, les leviers d'inhibition 30 parcourent chacun une trajectoire circulaire autour de l'arbre de rotation 10, les appendices 35 parcourent aussi, chacun, une trajectoire circulaire et balayent chacun une surface correspondant à l'une desdites couronnes circulaires fictives dont ils occupent un secteur angulaire.Considering the part of the device described so far, it will be understood that during the continuous rotation of the cam block 3 and of the wall 130, that is to say when the programmer 1 is in operation, the inhibition levers 30 run through each a circular trajectory around the rotation shaft 10, the appendages 35 also travel, each, a circular trajectory and each scan a surface corresponding to one of said fictitious circular rings of which they occupy an angular sector.

D'autre part, chaque extrémité 32 des leviers d'inhibition 30, porte un appendice d'inhibition 33 du cliquet 11, de section circulaire, s'élevant sensiblement perpendiculairement au plan formé par chaque levier 30 et orienté vers le cliquet 11.
Chaque appendice 33 est disposé à une même distance de l'axe de rotation 100 de la came d'inversion 3. Ainsi, lorsque la came d'inversion 3 est en rotation, les appendices d'inhibition 33 parcourent des trajectoires circulaires identiques.On the other hand, each end 32 of the inhibition levers 30 carries an inhibition appendage 33 of the pawl 11, of circular section, rising substantially perpendicular to the plane formed by each lever 30 and oriented towards the pawl 11.
Each appendage 33 is disposed at the same distance from the axis of rotation 100 of the reversing cam 3. Thus, when the reversing cam 3 is in rotation, the inhibiting appendages 33 travel on identical circular paths.

Le dispositif de l'invention comprend, en outre, des éléments de programmation des temporisations 350, ici des doigts, disposés, perpendiculairement à elle, sur la paroi 130 du manchon 13 du bloc de cames 2, orientés vers la paroi 120 comprenant les leviers d'inhibition 30 et s'étendant jusqu'à une distance leur permettant de coopérer avec les appendices 35 des leviers d'inhibition 30.
Les doigts de programmation 350 sont disposés circulairement autour de l'axe de rotation 100, selon quatre cercles concentriques de rayons respectifs r1, r2, r3, r4, de façon à se trouver sur les trajectoires balayées par les appendices 35 des leviers d'inhibition 30, lorsque la came d'inversion 3 est en rotation.The device of the invention further comprises timing programming elements 350, here fingers, arranged, perpendicular to it, on the wall 130 of the sleeve 13 of the cam block 2, oriented towards the wall 120 comprising the levers inhibition 30 and extending to a distance allowing them to cooperate with the appendages 35 of the inhibition levers 30.
The programming fingers 350 are arranged circularly around the axis of rotation 100, in four concentric circles of respective radii r1, r2, r3, r4, so as to be on the paths swept by the appendages 35 of the inhibition levers 30, when the reversing cam 3 is in rotation.

Enfin, la disposition des doigts de programmation 350 est déterminée par un découpage mathématique des quatre cercles de rayons r1 à r4, en une somme de secteurs angulaires identiques, d'angle α déjà cité, chaque secteur angulaire définissant ainsi quatre emplacements possibles pour les doigts de programmation 350.
Tous les emplacements ainsi déterminés ne comportent pas obligatoirement un doigt de programmation 350, mais chaque sexteur angulaire α doit cependant comprendre au moins un doigt de programmation, sur l'un des quatre emplacements possibles, pour garantir l'avancée du bloc de cames, comme ceci sera décrit ci-après.Finally, the arrangement of the programming fingers 350 is determined by a mathematical division of the four circles of radii r1 to r4, into a sum of identical angular sectors, of angle α already mentioned, each angular sector thus defining four possible locations for the fingers. programming 350.
All the locations thus determined do not necessarily include a programming finger 350, but each angular sextor α must however include at least one programming finger, in one of the four possible locations, to guarantee the advance of the cam block, as this will be described below.

Il faut ici préciser que, lorsque la came d'inversion 3 est en rotation, et pour éviter tout risque de blocage par accrochage des appendices 35, en mouvement, avec les doigts de programmation 350, la plupart du temps immobiles, les appendices 35 et les doigts de programmation 350 comportent chacun un profil en forme de rampe, respectivement 36 pour les appendices 35 et 351 pour les doigts de programmation 350 (figure 1), de façon à ce que les profils 36 des appendices 35 et les profils 351 des doigts de programmation 350 soient en regard et coopèrent, lorsque les appendices 35 rencontrent les doigts de programmation 350, pendant la rotation de la came d'inversion 3.It should be specified here that, when the reversing cam 3 is in rotation, and to avoid any risk of blockage by hooking the appendages 35, in motion, with the programming fingers 350, most of the time stationary, the appendages 35 and the programming fingers 350 each have a ramp-shaped profile, respectively 36 for the appendages 35 and 351 for the programming fingers 350 (FIG. 1), so that the profiles 36 of the appendages 35 and the profiles 351 of the fingers programming 350 are opposite and cooperate, when the appendages 35 meet the programming fingers 350, during the rotation of the reversing cam 3.

On notera enfin que l'angle α correspond aux déplacements angulaires qu'effectue le bloc de came 2 lors de sa rotation pas à pas.Finally, it will be noted that the angle α corresponds to the angular displacements made by the cam block 2 during its rotation step by step.

La description du dispositif de l'invention sera achevée lorsque l'on ajoutera que le cliquet 11 comporte un appendices 44, de section circulaire, s'élevant perpendiculairement au cliquet 11, dirigé en direction des leviers d'inhibition 30 et se terminant dans un plan comprenant les appendices d'inhibition 33, de façon à coopèrer par glissement, dans certaines conditions décrites ci-après, avec les appendices d'inhibition 33 des bascules 30.The description of the device of the invention will be completed when it is added that the pawl 11 comprises an appendages 44, of circular section, rising perpendicular to the pawl 11, directed in the direction of the inhibition levers 30 and ending in a plan comprising the inhibition appendages 33, so as to cooperate by sliding, under certain conditions described below, with the inhibition appendages 33 of the rockers 30.

Le fonctionnement du dispositif de l'invention va maintenant être décrit.The operation of the device of the invention will now be described.

Considérons tout d'abord le cas où le bloc de cames 2 est immobile, c'est à dire entre deux entraînements en rotation d'un pas du bloc de cames 2, la came d'inversion 3 étant en rotation continue.Let us first consider the case where the cam block 2 is stationary, that is to say between two rotational drives of one step of the cam block 2, the reversing cam 3 being in continuous rotation.

Dans cette situation, les leviers d'inhibition 30 sont animés de mouvements d'oscillation autour de leurs axes de torsion 31, tout en parcourant des trajectoires circulaires autour de l'arbre de rotation 10 de la came d'inversion 3.In this situation, the inhibition levers 30 are driven by oscillating movements around their torsion axes 31, while traversing circular paths around the rotation shaft 10 of the reversing cam 3.

Les oscillations des leviers d'inhibition 30, entre une position d'inhibition et une position escamotée, sont le résultat de la coopération par glissement des appendices 35 sur les doigts de programmation 350 du bloc de cames 2.

  • Lorsqu'un appendice 35 rencontre, sur sa trajectoire circulaire, un doigt de programmation 350, cet appendice 35 se superpose au doigt de programmation 350, par coopération des profils en forme de rampe déjà décrits, et fait pivoter le levier d'inhibition 30 dont il est solidaire, ce levier d'inhibition 30 étant alors sensiblement ramené dans le plan formé par la paroi 120, c'est à dire en position escamotée.
  • Lorsque, ensuite, le doigt de programmation 350 s'efface sous l'appendice 35, le levier d'inhibition 30 revient à sa position normale, sous l'effet de l'axe de torsion 31, c'est à dire en position d'inhibition du cliquet 11.
The oscillations of the inhibition levers 30, between an inhibition position and a retracted position, are the result of the cooperation by sliding of the appendages 35 on the programming fingers 350 of the cam block 2.
  • When an appendage 35 meets, on its circular path, a programming finger 350, this appendage 35 is superimposed on the programming finger 350, by cooperation of the ramp-shaped profiles already described, and makes the inhibition lever 30 of which pivot it is integral, this inhibition lever 30 then being substantially brought back into the plane formed by the wall 120, that is to say in the retracted position.
  • When, then, the programming finger 350 disappears under the appendix 35, the inhibition lever 30 returns to its normal position, under the effect of the torsion axis 31, that is to say in position d inhibition of the ratchet 11.

Considérons maintenant le fonctionnement complet du dispositif de l'invention et ajoutons, pour ceci, aux éléments dont le fonctionnement est décrit ci-dessus, le cliquet 11 et son appendice 44.Let us now consider the complete operation of the device of the invention and add, for this, to the elements whose operation is described above, the pawl 11 and its appendage 44.

Les leviers d'inhibition 30 traversent successivement, sur leur trajectoire circulaire, un secteur angulaire de synchronisation, dans lequel leurs appendices d'inhibition 33 peuvent coopèrer, par glissement, avec l'appendice 44 du cliquet 11, et ainsi inhiber le cliquet 11.The inhibition levers 30 pass successively, on their circular trajectory, an angular synchronization sector, in which their inhibition appendages 33 can cooperate, by sliding, with the appendage 44 of the pawl 11, and thus inhibit the pawl 11.

Le dispositif de l'invention est calibré de façon à ce que le secteur de synchronisation soit rencontré par un levier d'inhibition 30 dès l'instant où le cliquet 11 rencontre une fenêtre 14, pour entraîner le bloc de cames 2. A chaque fenêtre 14 correspond donc un levier d'inhibition 30 déterminé.
Les figures 3 et 4 illustrent une situation dans laquelle un levier d'inhibition 30 rencontre le secteur de synchronisation.The device of the invention is calibrated so that the synchronization sector is encountered by an inhibiting lever 30 from the moment the pawl 11 meets a window 14, to drive the block of cams 2. At each window 14 therefore corresponds to a determined inhibition lever 30.
FIGS. 3 and 4 illustrate a situation in which an inhibition lever 30 meets the synchronization sector.

Sur les figures 3 et 4, le secteur de synchronisation est schématisé par un axe 100-110, le secteur de synchronisation étant rencontré par un levier d'inhibition 30 lorsqu'un appendice 35 traverse cet axe 100-110.In FIGS. 3 and 4, the synchronization sector is shown diagrammatically by an axis 100-110, the synchronization sector being encountered by an inhibiting lever 30 when an appendage 35 crosses this axis 100-110.

Dans cette situation, deux cas peuvent se présenterIn this situation, two cases can arise

Dans un premier cas, illustré par la figure 4, l'appendice 35 du levier 30 ne rencontre pas de doigt de programmation 350 pendant la traversée de l'axe de synchronisation 100-110.In a first case, illustrated by FIG. 4, the appendage 35 of the lever 30 does not meet a programming finger 350 during the crossing of the synchronization axis 100-110.

Le levier 30 reste dans la position déterminée par son axe de torsion 31, c'est à dire la position d'inhibition.The lever 30 remains in the position determined by its torsion axis 31, that is to say the inhibition position.

L'appendice d'inhibition 33 du levier d'inhibition 30 coopère alors, par glissement, avec l'appendice 44 du cliquet 11, le cliquet 11 étant maintenu dans une position dans laquelle le bec 19 ne peut s'engager dans la fenêtre 14 qui lui est en regard.The inhibition appendage 33 of the inhibition lever 30 then cooperates, by sliding, with the appendage 44 of the pawl 11, the pawl 11 being held in a position in which the spout 19 cannot engage in the window 14 facing him.

Dans un deuxième cas, illustré par la figure 5, l'appendice 35 du levier d'inhibition 30 rencontre un doigt de programmation 350, pendant la traversée de l'axe de synchronisation 100-110, le levier d'inhibition 30 bascule dans une position escamotée, l'appendice d'inhibition 33 s'efface sous l'appendice 44 du cliquet 11 et ne peut donc plus coopèrer avec le cliquet 11.In a second case, illustrated by FIG. 5, the appendix 35 of the inhibition lever 30 encounters a programming finger 350, during the crossing of the synchronization axis 100-110, the inhibition lever 30 switches in a retracted position, the inhibition appendage 33 disappears under the appendage 44 of the pawl 11 and can therefore no longer cooperate with the pawl 11.

Dans ce cas, le bec 19 du cliquet 11 s'engage dans la fenêtre 14 et entraîne le bloc de cames 2 en rotation d'un angle α , faisant ainsi coïncider avec le secteur de synchronisation un nouveau secteur angulaire α de doigts de programmation 350, pour une nouvelle temporisation.In this case, the spout 19 of the pawl 11 engages in the window 14 and drives the cam block 2 in rotation by an angle α, thus making coincide with the synchronization sector a new angular sector α of programming fingers 350 , for a new delay.

On remarquera que selon le mode de réalisation de l'invention décrit ci-dessus, la présence d'un doigt de programmation 350 sur l'axe de synchronisation 100-110, signifie l'escamotage d'un levier d'inhibition 30, les leviers 30 étant, au repos, en position d'inhibition du cliquet 11.It will be noted that according to the embodiment of the invention described above, the presence of a programming finger 350 on the synchronization axis 100-110, signifies the retraction of an inhibition lever 30, the levers 30 being, at rest, in the ratchet inhibition position 11.

On pourrait cependant inverser le mécanisme d'inhibition, en disposant les appendices 35 aux extrémités 32 des leviers d'inhibition 30, en disposant les axes de torsion 31 aux extrémités 34 et en disposant les leviers d'inhibition 30 selon un plan de repos sensiblement parallèle à la paroi 120.One could however reverse the inhibition mechanism, by placing the appendages 35 at the ends 32 of the inhibition levers 30, by placing the torsion axes 31 at the ends 34 and by placing the inhibition levers 30 in a substantially plane of rest. parallel to the wall 120.

Dans ce cas, la présence d'un doigt de programmation 350 dans le secteur de synchronisation signifierait l'inhibition du cliquet 11 et, inversement, les leviers d'inhibition 30 seraient maintenus escamotés par leur axe de torsion 31 en l'absence de doigts de programmation 350.In this case, the presence of a programming finger 350 in the synchronization sector would mean inhibition of the pawl 11 and, conversely, the inhibition levers 30 would be kept retracted by their torsion axis 31 in the absence of fingers programming 350.

Finalement, on remarquera que la durée de chaque temporisation dépend de la disposition relative des doigts de programmation 350, entre les secteurs angulaires α adjacents.Finally, it will be noted that the duration of each time delay depends on the relative arrangement of the programming fingers 350, between the adjacent angular sectors α.

En pratique, pour programmer les temporisations, on ne dispose qu'un seul doigt de programmation 350 par secteur angulaire α, sur l'un des quatres enplacements possibles par secteur angulaire.
Pour choisir l'emplacement sur lequel chaque doigt de programmation 350 doit être disposé, on tient compte de la durée de la temporisation que l'on veut programmer et de l'emplacement, dans le secteur angulaire α adjacent et précédent, du doigt de programmation 350 qui détermine la temporisation précédente et l'entrainement précédent du bloc de cames 2.In practice, to program the timers, there is only one programming finger 350 per angular sector α, on one of the four possible locations by angular sector.
To choose the location on which each programming finger 350 must be placed, account is taken of the duration of the time delay that we want to program and the location, in the adjacent and previous angular sector α, of the programming finger 350 which determines the previous timing and the previous training of the cam block 2.

Le dispositif de l'invention permet avantageusement de s'affranchir des cinématiques encombrantes connues, en abandonnant le principe de programmation des temporisations par came à profil périphérique et en proposant une nouvelle cinématique d'inhibition permettant de transformer directement les informations contenues sur le bloc de cames, ici les doigts de programmation 350, en mouvements d'inhibition du cliquet 11.The device of the invention advantageously makes it possible to overcome known bulky kinematics, by abandoning the principle of programming timers by cam with peripheral profile and by proposing a new inhibition kinematics making it possible to directly transform the information contained on the block of cams, here the programming fingers 350, in movements to inhibit the pawl 11.

Il est à noter qu'un programmateur comprenant le dispositif de l'invention peut également recevoir, en complément, un dispositif de temporisations longues, multiples de la temporisation de base correspondant à un tour de came d'inversion.It should be noted that a programmer comprising the device of the invention can also receive, in addition, a long time delay device, multiple of the basic time delay corresponding to an inversion cam turn.

Claims (10)

Dispositif de temporisation pour programmateur (1) de machine électrodomestique comprenant un bloc de cames (2) de programmation entraîné en rotation pas à pas, une came d'inversion (3) entraînée en rotation continue, un cliquet (11) basculant dans une position d'entraînement du bloc de cames (2) au moins deux fois par tour de la came d'inversion (3), le dispositif comprenant des moyens d'inhibition dudit cliquet (11) et des moyens (350) de commande desdits moyens d'inhibition, pour inhiber le cliquet ( 11 ) un nombre de fois déterminé à chaque tour de la came d'inversion (3), dispositif caractérisé par le fait que lesdits moyens d'inhibition comprennent une pluralité de leviers (30) d'inhibition dudit cliquet (11), pivotant chacun autour d'un axe (31) solidaire d'un disque rotatif (120) entraîné en rotation par la came d'inversion (3), comprenant chacun des moyens de coopération (33) avec ledit cliquet ( 11) et des moyens (31) de rappel élastique vers une position de repos, lesdits moyens de commande (350) étant agencés pour faire pivoter les leviers d'inhibition (30) dans une position basculée.Time delay device for programmer (1) of household electrical appliance comprising a block of cams (2) of programming driven in rotation step by step, a reversing cam (3) driven in continuous rotation, a pawl (11) rocking in a position for driving the cam block (2) at least twice per revolution of the reversing cam (3), the device comprising means for inhibiting said pawl (11) and means (350) for controlling said means d inhibition, for inhibiting the pawl (11) a number of times determined at each revolution of the reversing cam (3), device characterized in that said inhibiting means comprise a plurality of inhibiting levers (30) of said pawl (11), each pivoting about an axis (31) integral with a rotary disc (120) driven in rotation by the reversing cam (3), each comprising means of cooperation (33) with said pawl (11) and means (31) for elastic return to a position of at rest, said control means (350) being arranged to pivot the inhibition levers (30) in a tilted position. Dispositif selon la revendication 1, dans lequel lesdits moyens de commande comprennent une pluralité de doigts de programmation (350) disposés sur un deuxième disque rotatif (130) entraîné en rotation par le bloc de cames (2) et agencés pour coopérer avec au moins l'un desdits leviers d'inhibition (30).Device according to claim 1, in which said control means comprise a plurality of programming fingers (350) arranged on a second rotary disc (130) driven in rotation by the cam block (2) and arranged to cooperate with at least the 'one of said inhibition levers (30). Dispositif selon la revendication 2, dans lequel lesdits doigts de programmation (350) sont disposés sur une pluralité de cercles concentriques les uns aux autres et centrés sur l'arbre de rotation (10) dudit deuxième disque (130), lesdits leviers d'inhibition (30) étant agencés pour coopèrer chacun avec l'un desdits cercles de doigts de programmation (350).Device according to claim 2, in which said programming fingers (350) are arranged on a plurality of circles concentric with each other and centered on the rotation shaft (10) of said second disc (130), said inhibition levers (30) being arranged to cooperate each with one of said circles of programming fingers (350). Dispositif selon la revendication 3, dans lequel un levier d'inhibition (30) en position de repos coopère avec le cliquet (11) .Device according to claim 3, in which an inhibition lever (30) in the rest position cooperates with the pawl (11). Dispositif selon la revendication 3, dans lequel un levier d'inhibition (30) en position basculée coopère avec le cliquet (11).Device according to claim 3, in which a muting lever (30) in the tilted position cooperates with the pawl (11). Dispositif selon l'une des revendications 3 à 5, dans lequel lesdits leviers d'inhibition (30) comportent chacun un appendice (35) orienté vers lesdits doigts de programmation (350) et agencé pour coopérer par glissement avec lesdits doigts de programmation (350).Device according to one of claims 3 to 5, in which said inhibiting levers (30) each comprise an appendage (35) oriented towards said programming fingers (350) and arranged to cooperate by sliding with said programming fingers (350 ). Dispositif selon la revendication 6, dans lequel lesdits appendices (35) des leviers d'inhibition (30) comportent chacun un profil (36) en forme de rampe, lesdits doigts de programmation (350) comportent chacun un profil (351) en forme de rampe agencé pour coopérer avec lesdits profils (36) en forme de rampe des appendices (35) des leviers d'inhibition (30).Device according to claim 6, in which said appendages (35) of the inhibition levers (30) each comprise a profile (36) in the form of a ramp, said programming fingers (350) each comprise a profile (351) in the form of ramp arranged to cooperate with said profiles (36) in the form of a ramp of the appendages (35) of the inhibition levers (30). Dispositif selon l'une des revendications 1 à 7, dans lequel lesdits moyens de coopèration avec le cliquet (11) des leviers d'inhibition (30) comprennent des appendices (33) orientés vers le cliquet (11), agencés pour coopérer par glissement avec un appendice (44) dudit cliquet (11) et empêcher ainsi le cliquet (11) d'entraîner le bloc de cames (2).Device according to one of claims 1 to 7, in which said means for cooperating with the pawl (11) of the inhibition levers (30) comprise appendages (33) oriented towards the pawl (11), arranged to cooperate by sliding with an appendage (44) of said pawl (11) and thus prevent the pawl (11) from driving the cam block (2). Dispositif selon l'une des revendications 1 à 8, dans lequel ledit disque rotatif(120) est une cloison de la came d'inversion (3).Device according to one of claims 1 to 8, in which said rotary disc (120) is a partition of the reversing cam (3). Dispositif selon l'une des revendications 1 à 9, dans lequel ledit deuxième disque rotatif(130) est une cloison du bloc de cames (2).Device according to one of claims 1 to 9, wherein said second rotary disc (130) is a partition of the cam block (2).
EP19920401797 1991-06-27 1992-06-25 Time control device for electrodomestic machine programmer Expired - Lifetime EP0520896B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9107994 1991-06-27
FR9107994A FR2678422B1 (en) 1991-06-27 1991-06-27 TIMING DEVICE FOR PROGRAMMER OF ELECTRODOMESTIC MACHINE.

Publications (2)

Publication Number Publication Date
EP0520896A1 true EP0520896A1 (en) 1992-12-30
EP0520896B1 EP0520896B1 (en) 1995-03-22

Family

ID=9414404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920401797 Expired - Lifetime EP0520896B1 (en) 1991-06-27 1992-06-25 Time control device for electrodomestic machine programmer

Country Status (4)

Country Link
EP (1) EP0520896B1 (en)
DE (1) DE69201757T2 (en)
ES (1) ES2077377T3 (en)
FR (1) FR2678422B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468452A (en) * 1966-02-17 1967-02-03 Crouzet Sa Programmer with step-by-step rotation device, allowing to vary automatically the frequency of the steps without energy sources other than the motor driving the camshaft
DE1805594A1 (en) * 1967-10-24 1969-07-03 Candy S P A Fa Program control device for time units, in particular for washing machines, dishwashers and the like.
FR2102253A3 (en) * 1970-08-14 1972-04-07 Ako Werke Gmbh & Co
US4366352A (en) * 1980-08-29 1982-12-28 The Singer Company Two-speed continuous drive timer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468452A (en) * 1966-02-17 1967-02-03 Crouzet Sa Programmer with step-by-step rotation device, allowing to vary automatically the frequency of the steps without energy sources other than the motor driving the camshaft
DE1805594A1 (en) * 1967-10-24 1969-07-03 Candy S P A Fa Program control device for time units, in particular for washing machines, dishwashers and the like.
FR2102253A3 (en) * 1970-08-14 1972-04-07 Ako Werke Gmbh & Co
US4366352A (en) * 1980-08-29 1982-12-28 The Singer Company Two-speed continuous drive timer

Also Published As

Publication number Publication date
EP0520896B1 (en) 1995-03-22
DE69201757T2 (en) 1995-11-23
FR2678422A1 (en) 1992-12-31
DE69201757D1 (en) 1995-04-27
FR2678422B1 (en) 1993-09-17
ES2077377T3 (en) 1995-11-16

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