EP0520896B1 - Dispositif de temporisation pour programmateur de machine électrodomestique - Google Patents

Dispositif de temporisation pour programmateur de machine électrodomestique Download PDF

Info

Publication number
EP0520896B1
EP0520896B1 EP19920401797 EP92401797A EP0520896B1 EP 0520896 B1 EP0520896 B1 EP 0520896B1 EP 19920401797 EP19920401797 EP 19920401797 EP 92401797 A EP92401797 A EP 92401797A EP 0520896 B1 EP0520896 B1 EP 0520896B1
Authority
EP
European Patent Office
Prior art keywords
pawl
inhibiting
levers
rotation
cam
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.)
Expired - Lifetime
Application number
EP19920401797
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0520896A1 (fr
Inventor
Jean Vollot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noalia Solutions SA
Original Assignee
Crouzet Appliance Controls SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Crouzet Appliance Controls SA filed Critical Crouzet Appliance Controls SA
Publication of EP0520896A1 publication Critical patent/EP0520896A1/fr
Application granted granted Critical
Publication of EP0520896B1 publication Critical patent/EP0520896B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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 household electrical machine programmer 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 cam block 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 the masking crown, and integral with the reversing cam , in which a number of windows are made.
  • the pawl meets a window of said masking ring, 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 cam block 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 the said inhibiting means comprise a plurality of levers for inhibiting the said pawl, each pivoting about an axis secured to 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 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, while 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 shape 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 about 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 description of the device of the invention will be completed when it is added that the pawl 11 has appendages 44, of circular section, rising perpendicular to the pawl 11, directed in the direction of the inhibiting 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 trajectories 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 appendix 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 time 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.

Landscapes

  • Transmission Devices (AREA)
  • Devices For Executing Special Programs (AREA)
EP19920401797 1991-06-27 1992-06-25 Dispositif de temporisation pour programmateur de machine électrodomestique Expired - Lifetime EP0520896B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9107994A FR2678422B1 (fr) 1991-06-27 1991-06-27 Dispositif de temporisation pour programmateur de machine electrodomestique.
FR9107994 1991-06-27

Publications (2)

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

Family

ID=9414404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920401797 Expired - Lifetime EP0520896B1 (fr) 1991-06-27 1992-06-25 Dispositif de temporisation pour programmateur de machine électrodomestique

Country Status (4)

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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468452A (fr) * 1966-02-17 1967-02-03 Crouzet Sa Programmateur à dispositif de rotation pas à pas, permettant de faire varier automatiquement la fréquence des pas sans sources d'énergie autres que le moteur entraînnt l'arbre à cames
FR1603229A (es) * 1967-10-24 1971-03-22
DE2040464C3 (de) * 1970-08-14 1980-05-14 Ako-Werke Gmbh & Co, 7988 Wangen Programmsteuergerät für Waschautomaten
US4366352A (en) * 1980-08-29 1982-12-28 The Singer Company Two-speed continuous drive timer

Also Published As

Publication number Publication date
FR2678422B1 (fr) 1993-09-17
DE69201757T2 (de) 1995-11-23
FR2678422A1 (fr) 1992-12-31
DE69201757D1 (de) 1995-04-27
ES2077377T3 (es) 1995-11-16
EP0520896A1 (fr) 1992-12-30

Similar Documents

Publication Publication Date Title
EP1431845B1 (fr) Boîte de montre
EP1373991A1 (fr) Chronographe a deux sens de rotation
EP0389739A1 (fr) Module d'affichage analogique pour mouvement d'horlogerie
EP0459851B1 (fr) Programmateur électromécanique à préselection douce de programme
EP0568492B1 (fr) Dispositif d'arrêt automatique pour l'entraînement motorisé électrique de porte, volet, store ou similaire
EP0520896B1 (fr) Dispositif de temporisation pour programmateur de machine électrodomestique
EP3561611A1 (fr) Mecanisme d'animation d'un element decoratif d'une piece d'horlogerie
EP0950932B1 (fr) Garde-temps dont un des affichages s'étend sur un arc de cercle
FR2566936A1 (fr) Cadenceur de programmation muni d'un mecanisme d'entrainement adapte a des intervalles de temps de longue duree
FR2632589A1 (fr) Dispositif d'entrainement d'un bras d'essuie-glace pour vehicules automobiles
EP0323343B1 (fr) Programmateur de machine à laver
EP0404658B1 (fr) Programmateur, notamment pour appareil électroménager, à deux blocs couplés dans un seul sens
FR2544098A1 (fr) Programmateur
FR2559284A1 (fr) Dispositif de commande de programmateur
EP0014640B1 (fr) Programmateur à trois temporisations mécaniques
CH714728B1 (fr) Mécanisme de sonnerie pour mouvement horloger.
EP0220093B1 (fr) Dispositif d'affichage à présélection pour programmateur
FR2630557A1 (fr) Programmateur pour machines electrodomestiques
EP0462888B1 (fr) Programmateur avec came de temporisation
FR2535869A2 (fr) Dispositif de commande de programmateur
EP0518768B1 (fr) Dispositif de commutation pour programmateur d'appareil électrodomestique
CH719985A1 (fr) Dispositif d'actionnement coordonné de deux mécanismes d'une pièce d'horlogerie
FR2549620A1 (fr) Programmateur electromecanique
EP0801409B1 (fr) Télérupteur
FR2624279A1 (fr) Programmateur

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES GB IT MC

17P Request for examination filed

Effective date: 19930629

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CROUZET ELECTROMENAGER

17Q First examination report despatched

Effective date: 19940627

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES GB IT MC

REF Corresponds to:

Ref document number: 69201757

Country of ref document: DE

Date of ref document: 19950427

ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA SOCIETA' SEMPLICE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950628

ITPR It: changes in ownership of a european patent

Owner name: CAMBIO NOME EPO;CROUZET APPLIANCE CONTROLS

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2077377

Country of ref document: ES

Kind code of ref document: T3

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: CROUZET APPLIANCE CONTROLS

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960617

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970625

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19970630

Year of fee payment: 6

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980626

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 20000516

Year of fee payment: 9

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000403

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000617

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050625