EP0427623B1 - Programmer, in particular for an electric household appliance, with two blocks coupled locally in one direction - Google Patents

Programmer, in particular for an electric household appliance, with two blocks coupled locally in one direction Download PDF

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Publication number
EP0427623B1
EP0427623B1 EP90403158A EP90403158A EP0427623B1 EP 0427623 B1 EP0427623 B1 EP 0427623B1 EP 90403158 A EP90403158 A EP 90403158A EP 90403158 A EP90403158 A EP 90403158A EP 0427623 B1 EP0427623 B1 EP 0427623B1
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EP
European Patent Office
Prior art keywords
block
programmer
group
cams
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
EP90403158A
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German (de)
French (fr)
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EP0427623A1 (en
Inventor
Roberto Pellicioli
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
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Publication date
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Publication of EP0427623A1 publication Critical patent/EP0427623A1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/005—Electromechanical pulse generators
    • H01H2019/006—Electromechanical pulse generators being rotation direction sensitive, e.g. the generated pulse or code depends on the direction of rotation of the operating part
    • 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
    • H01H2043/108—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 where at least some contacts of electromechanical timer give instructions to electronic timer and/or the timing motor is under control of electronic timer, e.g. hybrid timer
    • 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 programmer according to the preamble of claim 1.
  • Such a programmer is used in particular in the household appliance field, for devices such as washing machines for washing clothes or dishes, for example, and is known from documents FR-A-1503474 and FR-A1-2 564 218.
  • Programmers of the type defined above are also known, for which the members to be supplied are divided into two groups.
  • the first group is supplied via relay switches controlled by an electronic circuit.
  • the second group is supplied via contacts actuated by a block of cams, in a similar manner to what has just been described.
  • Such a programmer is therefore partially adaptable, insofar as it makes it possible to electronically choose and vary the duration of the drum drive in one direction, then in the other, for example. In addition, this choice has no influence on the control of the solenoid valve, the pump and the heating resistance.
  • Such a programmer is often called a hybrid programmer because it combines mechanically controlled contacts and electronically controlled relays. It partially solves the problems linked to the lack of adaptability of the programmer already described which includes a single block of cams to control all of the members. However, the need to use relays increases the cost price of the programmer and reduces its reliability.
  • the present invention aims to overcome the above drawbacks by providing an at least partially adaptable programmer, of a moderate cost price, and reliable.
  • the drive means drive the first block in a back-and-forth movement which remains limited to the portion where the coupling means are active.
  • the second block being coupled to the first in only one direction, it is always driven in the same direction, and the operation is of the type of that of a programmer which would comprise only the second block of cams.
  • the drive means drive the first block outside the first portion. Then the second block remains stationary. It is then possible, by continuing to control the first block so that it does not leave the second, remaining portion of its range of movement, the second portion where there is no mechanical coupling between the blocks, to have the organs controlled by the first block a certain number of tasks, independently of the organs controlled by the second block.
  • the first portion of the displacement range over which the mechanical coupling is active will be relatively small, so that the second portion is relatively large, to leave the maximum of possibilities for the tasks to be controlled by the first block independently. of the second block.
  • the programmer of the invention does not use a relay, but, in their place, contacts actuated by cams, of the conventional type, and the low cost and reliability of which are known.
  • means are provided for prohibiting the supply of the electrical members relating to the cams of said second block, when said first block moves inside said first portion.
  • the first block is controlled to leave the first portion, or active portion, which has the effect of firstly authorizing the supply of the members relating to the cams of the second block which must be put into service taking into account the position in which is this second block, and on the other hand to execute specific tasks to the organs relating to the first block of cams.
  • the first block returns to the active portion, which has the effect of prohibiting the supply of the members relating to the second block during the change of position of the second block.
  • the programmer of the invention is therefore particularly flexible to use, since it can be used with a block of cams memorizing the programs and moved step by step, or with a block of cams intended to be used with an electronic circuit which memorizes the different programs and which consequently controls the movements of the cam block, or even with a cam block which combines these two characteristics.
  • said means for preventing the supply comprise a cam and a switch actuated by this cam.
  • the device for preventing the supply of the organs relating to the second block mainly uses simple mechanical elements which give it a low cost price, good robustness and a reduced bulk.
  • the second remaining portion of the range of displacement of said first block, second portion for which said mechanical coupling means are active neither in one direction or the other is divided into a plurality of zones, each corresponding to a subroutine controllable by said first block.
  • means are provided for coding the position of said second block, and means for, in response to the coded position of said second block, determining the tasks to be controlled by the programmer.
  • said mechanical coupling means comprise a pawl secured to said first block, a toothing secured to said second block, and elastic means for biasing said pawl against said toothing when said first block moves on said first portion.
  • said device is a washing machine provided with a drum and means for driving said drum in rotation
  • said first block comprises cams cooperating with supply contacts of said means driving the drum in rotation, to reverse the direction of said rotation.
  • the programmer of the invention is particularly useful in this case, since it allows great flexibility in programming the movements of the drum.
  • This machine comprises, in known manner, a plurality of electrical members which are supplied with electrical energy selectively and sequentially, by means of a programmer, so as to carry out a washing program.
  • the washing machine thus comprises in particular a motor 11, of universal type, for driving the drum in which the laundry is placed, and a resistor 7 for heating the water.
  • the machine also includes other organs, such as a solenoid valve, a drain pump, and so on.
  • these organs are divided into two groups, the organs of the first group being denoted 14 ′ and the organs of the second group being denoted 24 ′.
  • the universal motor 11 comprises in particular two terminals 110 and 111 for access to the rotor, and two terminals 112 and 113 for access to the inductor.
  • the terminal P is connected to a first movable stud of a double inverter 12, the four fixed studs of which are linked in pairs, and the second movable stud of which is connected to the inductor terminal 112.
  • the inductor terminal 113 is connected to terminal N by means of a triac 15 here.
  • Each rotor terminal 110 and 111 is respectively connected to one of the pairs of fixed studs connected to each other by the double inverter 12.
  • Each member 14 ′ here has a terminal connected directly to terminal N, the other being connected to terminal P via a contact 14.
  • Each contact 14 is provided with a fixed pad and a movable pad , to form a switch.
  • a contact 16 provided with a fixed pad and a movable pad forming a switch, connects a connection 26 to the terminal N.
  • Each member 24 ′ has a terminal connected directly to the connection 26, the other being connected to the terminal P via a contact 24.
  • the contacts 24 are identical to the contacts 14.
  • Each switch 14 allows powering or not, the corresponding member 14 ′.
  • each switch 24 makes it possible to supply, or not, the corresponding member 24 ′, provided however that the switch 16 is closed.
  • the switch 16 is said to be the general switch insofar as, if it is open, no member 24 ′ is supplied, even if the corresponding switch 24 is closed.
  • a first and a second group of position coding contacts connect a VCC terminal of an electronic circuit 40, delivering a DC voltage, to a first and a second group of binary inputs, denoted 13 ′ and 23 ′ respectively, which is provided with the electronic circuit 40.
  • a first end of the heating resistor 7 is connected to the terminal P via a contact 17, and its second end is connected to the connection 26 via a contact 27.
  • the contacts 13, 23, 17 and 27 are identical to the contacts 14 and 24, that is to say that each of them is provided with a fixed pad and a movable pad to form a switch.
  • the electronic circuit 40 connected between the terminals N and P, controls a motor 41, here a two-way synchronous motor, as well as the triac 15.
  • the output shaft 410 of the motor 41 drives cams, not shown in FIG. 1, which exert on the moving studs of the double inverter 12 and of the switches 13, 14, 16, 17, 27, 23 and 24 of the forces shown schematically by the arrows F.
  • the forces F act against the restoring forces of the mobile pads to move them and put them in contact with the corresponding fixed pad, or on the contrary move them away.
  • the programmer includes the electronic circuit 40, the motor 41, the double reverser 12, the switches 13, 14, 16, 17, 27, 23 and 24 of FIG. 1, as well as the cams which have been discussed, and which will now be described with reference to FIG. 2.
  • the first block 1 here comprises two cams 12 ⁇ which respectively actuate each of the movable studs of the inverter 12, cams 13 ⁇ of position coding, which actuate the switches 13 respectively, cams 14 ⁇ which actuate the switches 14 respectively, as well as a 16 ⁇ cam and a 17 ⁇ cam which actuate the switches 16 and 17 respectively.
  • the second block 2 includes a cam 27 ⁇ which actuates the switch 27, cams 23 ⁇ for position coding, which respectively actuate the switches 23, and cams 24 ⁇ which actuate the switches 24 respectively.
  • each of the two blocks 1 and 2 is movable in rotation about a common axis 3.
  • the position coding cams 13 ⁇ and 23 ⁇ have profiles provided so that a microprocessor internal to the electronic circuit 40 and connected to its inputs 13 ′ and 23 ′ knows at all times the position of each of the blocks of cams 1 and 2
  • the cams 23 ⁇ here perform an absolute coding of the position of the block 2
  • the cams 13 ⁇ each comprise a sufficiently large number of teeth so that the microprocessor, by counting pulses , determines the amplitude of the displacements of block 1, and therefore, from its original position, the amplitude of its displacements.
  • the cams 13 ⁇ are here two in number and their teeth are slightly offset to allow the determination of the direction of movement of the block 1.
  • Each movable stud is arranged on a blade actuated by a lever, which cooperates with the profile of the corresponding cam.
  • each of the levers is subjected to the action of a force exerted for example by a spring, which recalls it against the profile of the corresponding cam, that is to say towards the axis 3.
  • each of the movable studs of the inverter 12 On either side of each of the movable studs of the inverter 12 are arranged the two corresponding fixed studs.
  • the profile of each of the cams 12 ⁇ includes bumps and hollows.
  • the movable contact touches the fixed contact furthest from the axis 3, and when the lever is on a hollow, the movable contact touches the fixed contact closest to axis 3.
  • the profile of a cam 12 ⁇ successively comprises a recess corresponding to a boss of the other cam 12 ⁇ , then a boss corresponding to a recess of the other cam 12 ⁇ , and so on. This ensures a reversal of the direction of connection of the rotor of the motor 11.
  • each of the switches 13, 14, 16, 17, 27, 23 and 24 are arranged next to the corresponding movable pads, and the cams 13 ⁇ , 14 ⁇ , 16 ⁇ , 17 ⁇ , 27 ⁇ , 23 ⁇ and 24 ⁇ have only neutral profile portions and bumps.
  • the neutral profile portions leave the corresponding switch open, while the bumps close it, or vice versa.
  • the motor 41 drives the block 1 via a reduction gear 42.
  • the cam 17 ⁇ which is here that which is closest to the block 2, is provided with a pawl 171 mounted pivoting about an axis 172 integral with the cam 17 ⁇ .
  • the axis 172 is parallel to the axis 3 and it is arranged at a distance from this axis 3.
  • the pawl 171 is provided with a pointed end oriented towards the axis 3, recalled by a spring 173 which tends to move it away of this axis 3.
  • the spring 173 is integral with the cam 17 ⁇ .
  • the pawl 171 is intended to cooperate on the one hand with one end of an elastic blade 174 the other end of which is integral with the chassis on which the programmer is mounted, and on the other hand with a toothing 271 provided on the cam 27 ⁇ , which is here the cam of block 2 closest to block 1.
  • the toothing 271 is only partially visible in FIG. 2.
  • the pawl 171 cooperates with the blade 174, it brings, against the action of the spring 173, the pointed end of the pawl 171 of the teeth 271 of the cam 27 ⁇ .
  • the pawl 171 and the toothing 271 then cooperate in a known manner to provide a unidirectional coupling, that is to say that the pawl drives the toothing in one direction and not in the other.
  • the blade 174 is provided so that the sector ⁇ on which the unidirectional mechanical coupling is activated has a value of 6 °.
  • the blade 174 makes active the unidirectional coupling between the blocks 1 and 2 over only a portion of the range of displacement of the block 1, a portion corresponding here to the sector ⁇ .
  • the block 2 is integral in rotation with a device 6 which allows the user of the washing machine to select a washing program chosen from all of the available programs, when the machine is at rest.
  • the device 6 can also allow the display of the program step which is being carried out.
  • the user of the machine places the device 6 in a determined position corresponding to the selected program.
  • the microprocessor having determined the chosen program, it is he who controls the rest of the programmer so that the program proceeds as follows.
  • the program to be executed is a very simple washing program, which includes filling the machine with water, heating the water, and emptying the machine, these three phases being accompanied by rotational movements. in one direction and in the other, of the drum of the machine.
  • water intake solenoid valve and the drain pump are members 24 ′ controlled by block 2.
  • the circuit 40 first controls the triac 15 so that it remains open. The engine 11 is therefore stopped. It then controls the motor 41 to bring the block 1 to the position of FIG. 3 b where the block 2 is coupled to the block 1, in the direction T.
  • the cam 16 ⁇ for controlling the general switch 16 is provided with a bump which controls the opening of the general switch 16 when the block 1 is in the sector of 6 ° where the pawl 171 is active.
  • the circuit 40 then commands block 1 a series of back and forth movements of amplitude 6 °. At each of these movements, the block 2 moves 6 ° in the direction T.
  • the circuit 40 therefore brings the block 2 into the position where the switch 24 which controls the water inlet valve is closed.
  • a memory in which the positions of the hollows and the bumps of all the cams are stored. Because the general switch 16 is open and then prohibits the supply of the organs 24 ′, these cannot be inadvertently energized during these movements of the block 2.
  • the microprocessor of circuit 40 then controls the drive of block 1 outside the sector ⁇ where the pawl 171 is active. This results in the closing of the general switch 16, which makes the water intake effective.
  • the microprocessor can then control the block 1 to then carry out, during filling, any appropriate subroutine.
  • the microprocessor controls on the one hand the triac 15 to adjust the speed of the motor 11, and on the other hand the movement of the block 1 to control the rotation in one direction, then in the other , of the drum driven by the motor 11.
  • the duration of the rotation in one direction, that of rotation in the other direction, and where appropriate that of the bearing which separates them during which the drum remains stationary are variable by simple electronic control by playing on the motor 41, and the triac 15.
  • the microprocessor As soon as the tank is filled, the microprocessor is notified, for example by a level detector, not shown as it is known. It can control, via the circuit 40, the triac 15 to stop the engine 11, and move the block 1 to bring it into the sector ⁇ where the pawl 171 is active, and where the main switch 16 is open . The water intake is therefore stopped.
  • a series of back and forth movements of the block 1 is then commanded to bring the block 2 into a position where the cam 27 ⁇ has a hollow in the lever which controls the switch 27 ′.
  • the levers actuated by the cams 17 ⁇ and 27 ⁇ are integral with one another.
  • the switches 17 and 27 are always simultaneously in the same state. This is imposed for security reasons.
  • the switches 17 and 27 can only be closed if each of the two levers which actuate them is in a hollow of the corresponding cam 17 ⁇ or 27 ⁇ , since as soon as one of the levers is on a bump, it drives the other in the high position.
  • the microprocessor therefore leaves the block 2 in the position where the cam 27 ⁇ has a hollow in the associated lever, and moves the block 1 to bring it into an area where the cam 17 ⁇ has a hollow in the lever associated with it.
  • the water heating then begins.
  • this zone must be of sufficient amplitude to allow back and forth movements of the block 1 controlling the reversals of the direction of rotation of the drum during heating.
  • back and forth movements of different durations, for example, than they were during filling, this is perfectly possible.
  • the washing program can thus run to the end with, as has been pointed out, great flexibility in the control of the members 14 ′ capable of being controlled by the block 1 while the block 2 remains stationary.
  • the function of block 2 is on the one hand to control the organs such as the organs 24 ′, and on the other hand to indicate to the microprocessor of the circuit 40, via the absolute coding information on the binary inputs. 23 ′, the tasks he must order.
  • the number of absolute coding steps on the cams 23 is here greater than the number of different steps of the cams 24.
  • the set of cams 24 which control the power members can be divided into 60 sectors, or not, each corresponding to the supply of a particular 24 ′ organ, or of a particular combination of 24 ′ organs.
  • the absolute coding carried out by the cams 23 can correspond to 120 steps of 3 °, or even to a greater number of steps still, each corresponding to a particular subroutine to be executed within the same not the 60 steps that were discussed.
  • Block 2 can also, as in the programmers of the prior art, be divided into a plurality of angular sectors each corresponding to a different program, the choice of one of these programs being made by moving block 2 to bring it at the start of the corresponding sector and the progress of this program being obtained by then sweeping this sector by block 2. In such a case, it is block 2 which memorizes, at least in part, the washing programs.
  • the block 2 can also be such that each cam comprises only a single bump, distributed so that the block 2 comprises a plurality of sectors, inside each of which a single member is supplied, in principle.
  • each cam comprises only a single bump, distributed so that the block 2 comprises a plurality of sectors, inside each of which a single member is supplied, in principle.
  • the corresponding sectors will be provided.
  • the mechanical structure of block 2 is simpler, and the programs are stored in the electronic circuit. This one controls block 2 either to advance by one step of the program each time, without worrying about the organ which is going to be thus started, but to go to start a determined organ, to be ordered during of this program step.
  • an inductor with an intermediate tap, so as to use only part of this inductor when the motor 11 is required to rotate at very high speed.
  • a simple inverter actuated by a cam of block 2, controls the connection of all or only part of the inductor.
  • the mechanical coupling means between the blocks 1 and 2 which have been described are not limiting, and it is possible in particular to change the shape of the pawl and the teeth or to use another active, unidirectional coupling device on only a portion of block 1.
  • the cams of the first block 1 include cams relating to the reversal of the direction of rotation of the drum motor, while that of the second block 2 comprises cams relating to the control of the other organs of the machine. If such a distribution is advantageous, as we have seen, in the case of a washing machine, it is not, even in this case, not compulsory and the person skilled in the art is able to choose the which distribution is the most interesting, taking into account the specific problem to be solved.
  • the programmer is not limited to controlling a plurality of organs assembled within the same device, and can be used in the case of an industrial system comprising a plurality of disseminated organs.

Abstract

The programmer comprises a device (40-42) for driving a first cam block (1) in both directions. There is provided a pawl (171), toothing (271), and an elastic strip (174), for coupling, in a single direction and over only a segment ( alpha ) of the range of movement of the first block (1), a second cam block (2) to the first block (1). A cam (16'') opens a switch allowing the supplying of the members relating to the second block, when the first block (1) moves within the said segment ( alpha ). The programmer applies in particular in the household electrical field. <IMAGE>

Description

La présente invention a pour objet un programmateur selon le préambule de la revendication 1.The present invention relates to a programmer according to the preamble of claim 1.

Un tel programmateur est utilisé en particulier dans le domaine électroménager, pour des appareils comme les machines à laver le linge ou la vaisselle par exemple et est connu par les documents FR-A-1503474 et FR-A1-2 564 218.Such a programmer is used in particular in the household appliance field, for devices such as washing machines for washing clothes or dishes, for example, and is known from documents FR-A-1503474 and FR-A1-2 564 218.

On connaît déjà des programmateurs du type défini ci-dessus, dans lesquels toutes les cames sont solidaires pour former un bloc de cames, et les moyens d'entraînement comprennent un moteur dont l'arbre de sortie entraîne le bloc. Dans ce type de programmateur, le déroulement du ou des programmes dépend de la façon dont se succèdent, à la périphérie des cames, les bosses d'actionnement des différents contacts. Pour modifier ce déroulement, il faut modifier les profils de cames. En pratique, chaque exemplaire d'un tel programmateur n'est donc, après fabrication, plus adaptable. En effet, le programme, ou l'ensemble de programmes, qu'il est susceptible de faire se dérouler est figé et non modifiable.Programmers of the type defined above are already known, in which all the cams are integral to form a block of cams, and the drive means comprise a motor whose output shaft drives the block. In this type of programmer, the progress of the program or programs depends on the way in which, on the periphery of the cams, the actuation bumps of the various contacts. To modify this sequence, the cam profiles must be modified. In practice, each copy of such a programmer is therefore no longer adaptable after manufacture. Indeed, the program, or the set of programs, which it is likely to run is frozen and cannot be modified.

On connaît aussi des programmateurs du type défini ci-dessus, pour lesquels les organes à alimenter sont répartis en deux groupes. Le premier groupe est alimenté par l'intermédiaire de commutateurs à relais commandés par un circuit électronique. Le second groupe est alimenté par l'intermédiaire de contacts actionnés par un bloc de cames, de façon similaire à ce qui vient d'être décrit.Programmers of the type defined above are also known, for which the members to be supplied are divided into two groups. The first group is supplied via relay switches controlled by an electronic circuit. The second group is supplied via contacts actuated by a block of cams, in a similar manner to what has just been described.

Par exemple, dans le cas d'une machine à laver le linge, on prévoit d'alimenter le moteur d'entraînement du tambour par l'intermédiaire de relais commandés électroniquement, tandis que d'autres organes comme, par exemple, l'électrovanne d'admission d'eau, la pompe de vidange, et la résistance de chauffage de l'eau, sont alimentés par l'intermédiaire de contacts actionnés par un bloc de cames entraîné par un moteur.For example, in the case of a washing machine, provision is made to power the drum drive motor via electronically controlled relays, while other components such as, for example, the water intake solenoid valve, the drain pump, and the resistance for heating the water, are supplied via contacts actuated by a cam block driven by a motor.

Un tel programmateur est donc partiellement adaptable, dans la mesure où il permet de choisir et de faire varier électroniquement la durée d'entraînement du tambour dans un sens, puis dans l'autre, par exemple. De plus, ce choix reste sans influence sur la commande de l'électrovanne, de la pompe, et de la résistance de chauffage.Such a programmer is therefore partially adaptable, insofar as it makes it possible to electronically choose and vary the duration of the drum drive in one direction, then in the other, for example. In addition, this choice has no influence on the control of the solenoid valve, the pump and the heating resistance.

Un tel programmateur est souvent appelé programmateur hybride, car il combine des contacts commandés mécaniquement et des relais commandés électroniquement. Il permet de résoudre en partie les problèmes liés au manque d'adaptabilité du programmateur déjà décrit qui comporte un unique bloc de cames pour commander la totalité des organes. Toutefois,la nécessité d'utiliser des relais augmente le prix de revient du programmateur et en diminue la fiabilité.Such a programmer is often called a hybrid programmer because it combines mechanically controlled contacts and electronically controlled relays. It partially solves the problems linked to the lack of adaptability of the programmer already described which includes a single block of cams to control all of the members. However, the need to use relays increases the cost price of the programmer and reduces its reliability.

La présente invention vise à pallier les inconvénients précédents en procurant un programmateur au moins partiellement adaptable, d'un prix de revient modéré, et fiable.The present invention aims to overcome the above drawbacks by providing an at least partially adaptable programmer, of a moderate cost price, and reliable.

A cet effet, elle a pour objet un programmateur selon la revendication 1.To this end, it relates to a programmer according to claim 1.

Dans le programmateur de l'invention, deux modes de fonctionnement sont possibles.In the programmer of the invention, two modes of operation are possible.

Dans le premier mode, les moyens d'entraînement entraînent le premier bloc dans un mouvement de va-et-vient qui reste limité à la portion où les moyens de couplage sont actifs. Le deuxième bloc n'étant couplé au premier que dans un seul sens, il est entraîné toujours dans le même sens, et le fonctionnement est du type de celui d'un programmateur qui ne comporterait que le deuxième bloc de cames.In the first mode, the drive means drive the first block in a back-and-forth movement which remains limited to the portion where the coupling means are active. The second block being coupled to the first in only one direction, it is always driven in the same direction, and the operation is of the type of that of a programmer which would comprise only the second block of cams.

Pour passer au deuxième mode de fonctionnement, il suffit que les moyens d'entraînement entraînent le premier bloc à l'extérieur de la première portion. Alors le deuxième bloc reste immobile. Il est alors possible, en continuant à commander le premier bloc pour qu'il ne quitte pas la deuxième portion, restante, de sa plage de déplacement, deuxième portion où il n'y a aucun couplage mécanique entre les blocs, de faire exécuter aux organes commandés par le premier bloc un certain nombre de tâches, indépendamment des organes commandés par le second bloc.To switch to the second operating mode, it suffices that the drive means drive the first block outside the first portion. Then the second block remains stationary. It is then possible, by continuing to control the first block so that it does not leave the second, remaining portion of its range of movement, the second portion where there is no mechanical coupling between the blocks, to have the organs controlled by the first block a certain number of tasks, independently of the organs controlled by the second block.

En pratique, la première portion de la plage de déplacement sur laquelle le couplage mécanique est actif sera relativement petite, de façon à ce que la deuxième portion soit relativement grande, pour laisser le maximum de possibilités pour les tâches à commander par le premier bloc indépendamment du second bloc.In practice, the first portion of the displacement range over which the mechanical coupling is active will be relatively small, so that the second portion is relatively large, to leave the maximum of possibilities for the tasks to be controlled by the first block independently. of the second block.

Il apparaît donc que le programmateur de l'invention offre des possibilités d'adaptation comparables à celles des programmateurs connus de type "hybride".It therefore appears that the programmer of the invention offers adaptation possibilities comparable to those of known programmers of the "hybrid" type.

Toutefois, le programmateur de l'invention n'utilise pas de relais, mais, à leur place des contacts actionnés par des cames, de type conventionnel, et dont le faible coût et la fiabilité sont connues.However, the programmer of the invention does not use a relay, but, in their place, contacts actuated by cams, of the conventional type, and the low cost and reliability of which are known.

Avec le programmateur de l'invention, on obtient un résultat comparable à celui que l'on obtiendrait avec deux blocs de cames indépendants, commandés par des moyens d'entraînement indépendants, c'est-à-dire en pratique chacun par un moteur indépendant par exemple, dont l'un fonctionnerait dans les deux sens. Il est remarquable que, dans le programmateur de l'invention, ce résultat soit atteint avec un unique moteur, par exemple, ce qui réduit notablement le coût de fabrication. Ceci provient de l'utilisation des moyens de couplage localement actifs dans un seul sens, associée à l'entraînement dans les deux sens, permettant l'entraînement du deuxième bloc par le premier lorsque cela est nécessaire, tout en conservant par ailleurs une indépendance assez grande du mouvement des deux blocs.With the programmer of the invention, a result is obtained comparable to that which would be obtained with two independent cam blocks, controlled by independent drive means, that is to say each in practice by an independent motor. for example, one of which would work both ways. It is remarkable that, in the programmer of the invention, this result is achieved with a single motor, for example, which significantly reduces the manufacturing cost. This comes from the use of locally active coupling means in one direction, associated with the drive in both directions, allowing the drive of the second block by the first when necessary, while also retaining a fairly independent large of the movement of the two blocks.

Avantageusement, il est prévu des moyens pour interdire l'alimentation des organes électriques relatifs aux cames dudit deuxième bloc, lorsque ledit premier bloc se déplace à l'intérieur de ladite première portion.Advantageously, means are provided for prohibiting the supply of the electrical members relating to the cams of said second block, when said first block moves inside said first portion.

Dans ce cas, lors des changements de position du deuxième bloc, il n'y a aucune mise sous tension intempestive, à l'origine de bruits et de dommages, des organes normalement commandés par le deuxième bloc. Lorsque le deuxième bloc a été ainsi amené dans une position déterminée, le premier bloc est commandé pour quitter la première portion, ou portion active, ce qui a pour effet d'une part d'autoriser l'alimentation des organes relatifs aux cames du deuxième bloc qui doivent être mis en service compte tenu de la position dans laquelle se trouve ce deuxième bloc, et d'autre part de faire exécuter des tâches particulières aux organes relatifs au premier bloc de cames. Lorsque la combinaison des organes relatifs au deuxième bloc doit être changée, le premier bloc revient dans la portion active, ce qui a pour effet d'interdire l'alimentation des organes relatifs au deuxième bloc pendant le changement de position du deuxième bloc. Lorsque la succession des pas d'un programme donné est mémorisée sur les cames elles-mêmes, ce changement de position du deuxième bloc consiste à passer d'un pas au suivant. Si la succession des pas d'un programme donné n'est pas mémorisée, ou si on désire effectuer un programme de lavage différent de ceux qui sont mémorisés, on notera qu'il est parfaitement possible, avec le programmateur de l'invention, de passer d'un pas déterminé à n'importe quel autre qui n'est pas son voisin, du fait que l'alimentation des organes relatifs au deuxième bloc est interdite pendant son déplacement, ce qui évite, comme cela a déjà été signalé, toute mise sous tension intempestive pendant le déplacement. Le programmateur de l'invention est donc particulièrement souple d'emploi, puisqu'il peut être employé avec un bloc de cames mémorisant les programmes et déplacé pas à pas, ou avec un bloc de cames destiné à être employé avec un circuit électronique qui mémorise les différents programmes et qui commande en conséquence les déplacements du bloc de cames, ou encore avec un bloc de cames qui combine ces deux caractéristiques.In this case, during changes of position of the second block, there is no untimely energizing, causing noise and damage, of the organs normally controlled by the second block. When the second block has thus been brought into a determined position, the first block is controlled to leave the first portion, or active portion, which has the effect of firstly authorizing the supply of the members relating to the cams of the second block which must be put into service taking into account the position in which is this second block, and on the other hand to execute specific tasks to the organs relating to the first block of cams. When the combination of the members relating to the second block must be changed, the first block returns to the active portion, which has the effect of prohibiting the supply of the members relating to the second block during the change of position of the second block. When the succession of steps of a given program is memorized on the cams themselves, this change of position of the second block consists in passing from one step to the next. If the succession of steps of a given program is not memorized, or if it is desired to carry out a washing program different from those which are memorized, it will be noted that it is perfectly possible, with the programmer of the invention, to to pass from a determined step to any other which is not its neighbor, owing to the fact that the supply of the organs relating to the second block is prohibited during its displacement, which avoids, as has already been reported, any inadvertent energization during movement. The programmer of the invention is therefore particularly flexible to use, since it can be used with a block of cams memorizing the programs and moved step by step, or with a block of cams intended to be used with an electronic circuit which memorizes the different programs and which consequently controls the movements of the cam block, or even with a cam block which combines these two characteristics.

Dans la forme de réalisation préférée du programmateur de l'invention, lesdits moyens pour interdire l'alimentation comprennent une came et un interrupteur actionné par cette came.In the preferred embodiment of the programmer of the invention, said means for preventing the supply comprise a cam and a switch actuated by this cam.

Dans ce cas, le dispositif pour interdire l'alimentation des organes relatifs au deuxième bloc met principalement en oeuvre des éléments mécaniques simples qui lui confèrent un prix de revient faible, une bonne robustesse et un encombrement réduit.In this case, the device for preventing the supply of the organs relating to the second block mainly uses simple mechanical elements which give it a low cost price, good robustness and a reduced bulk.

Avantageusement encore, la deuxième portion, restante, de la plage de déplacement dudit premier bloc, deuxième portion pour laquelle lesdits moyens de couplage mécanique ne sont actifs ni dans un sens ni dans l'autre, est divisée en une pluralité de zones, correspondant chacune à un sous-programme commandable par ledit premier bloc.Advantageously also, the second remaining portion of the range of displacement of said first block, second portion for which said mechanical coupling means are active neither in one direction or the other, is divided into a plurality of zones, each corresponding to a subroutine controllable by said first block.

Dans ce cas, les possibilités d'adaptation du programmateur sont grandes.In this case, the possibilities of adaptation of the programmer are great.

Avantageusement toujours, il est prévu des moyens de codage de la position dudit deuxième bloc, et des moyens pour, en réponse à la position codée dudit deuxième bloc, déterminer les tâches à commander par le programmateur.Still advantageously, means are provided for coding the position of said second block, and means for, in response to the coded position of said second block, determining the tasks to be controlled by the programmer.

Le fonctionnement d'un tel programmateur est simple et rapide.The operation of such a programmer is simple and quick.

Dans la forme de réalisation préférée du programmateur de l'invention, lesdits moyens de couplage mécanique comprennent un cliquet solidaire dudit premier bloc, une denture solidaire dudit deuxième bloc, et des moyens élastiques pour rappeler ledit cliquet contre ladite denture quand ledit premier bloc se déplace sur ladite première portion.In the preferred embodiment of the programmer of the invention, said mechanical coupling means comprise a pawl secured to said first block, a toothing secured to said second block, and elastic means for biasing said pawl against said toothing when said first block moves on said first portion.

Dans une application particulière de l'invention, ledit appareil est une machine à laver le linge pourvue d'un tambour et de moyens d'entraînement dudit tambour en rotation, et ledit premier bloc comprend des cames coopérant avec des contacts d'alimentation desdits moyens d'entraînement du tambour en rotation, pour inverser le sens de ladite rotation.In a particular application of the invention, said device is a washing machine provided with a drum and means for driving said drum in rotation, and said first block comprises cams cooperating with supply contacts of said means driving the drum in rotation, to reverse the direction of said rotation.

Le programmateur de l'invention s'avère particulièrement utile dans ce cas, puisqu'il permet une grande souplesse dans la programmation des mouvements du tambour.The programmer of the invention is particularly useful in this case, since it allows great flexibility in programming the movements of the drum.

La présente invention sera mieux comprise grâce à la description de la forme de réalisation préférée du programmateur de l'invention, faite en se référant aux dessins annexés, sur lesquels :

  • la figure 1 représente un schéma électrique d'un appareil électroménager utilisant le programmateur de l'invention,
  • la figure 2 représente une vue éclatée en perspective, simplifiée, du programmateur utilisé dans l'appareil de la figure 1, et,
  • les figures 3a et 3b représentent le dispositif de couplage mécanique entre les deux blocs de cames du programmateur de la figure 2, dans une position où il est inactif et dans une position où il est actif, respectivement.
The present invention will be better understood thanks to the description of the preferred embodiment of the programmer of the invention, made with reference to the appended drawings, in which:
  • FIG. 1 represents an electrical diagram of a household appliance using the programmer of the invention,
  • FIG. 2 represents an exploded perspective view, simplified, of the programmer used in the apparatus of FIG. 1, and,
  • Figures 3 a and 3 b show the mechanical coupling device between the two blocks of cams of the programmer of FIG 2, in a position where it is inactive and in a position where it is active, respectively.

Une machine à laver le linge utilisant le programmateur de l'invention est maintenant décrite.A washing machine using the programmer of the invention is now described.

Cette machine comprend, de façon connue, une pluralité d'organes électriques qui sont alimentés en énergie électrique sélectivement et séquentiellement, par l'intermédiaire d'un programmateur, de façon à réaliser un programme de lavage.This machine comprises, in known manner, a plurality of electrical members which are supplied with electrical energy selectively and sequentially, by means of a programmer, so as to carry out a washing program.

En se référant à la fig. 1, la machine à laver comprend ainsi notamment un moteur 11, de type universel, pour entraîner le tambour dans lequel est disposé le linge, et une résistance 7 de chauffage de l'eau. La machine comprend également d'autres organes, comme une électrovanne, une pompe de vidange, et ainsi de suite. Ici, ces organes sont répartis en deux groupes, les organes du premier groupe étant notés 14′ et les organes du second groupe étant notés 24′.Referring to fig. 1, the washing machine thus comprises in particular a motor 11, of universal type, for driving the drum in which the laundry is placed, and a resistor 7 for heating the water. The machine also includes other organs, such as a solenoid valve, a drain pump, and so on. Here, these organs are divided into two groups, the organs of the first group being denoted 14 ′ and the organs of the second group being denoted 24 ′.

L'énergie électrique est disponible entre une borne neutre N et une borne de phase P d'une source de tension alternative non représentée dans un souci de simplicité.Electrical energy is available between a neutral terminal N and a phase terminal P of an alternating voltage source not shown for the sake of simplicity.

Le moteur universel 11 comprend notamment deux bornes 110 et 111 d'accès au rotor, et deux bornes 112 et 113 d'accès à l'inducteur. La borne P est reliée à un premier plot mobile d'un inverseur double 12, dont les quatre plots fixes sont reliés deux à deux, et dont le deuxième plot mobile est relié à la borne d'inducteur 112. La borne d'inducteur 113 est reliée à la borne N par l'intermédiaire, ici, d'un triac 15. Chaque borne de rotor 110 et 111 est reliée respectivement à une des paires de plots fixes reliés entre eux de l'inverseur double 12. Ainsi le sens de branchement du rotor du moteur 11, relativement au sens de branchement de son inducteur, est commandé par les plots mobiles de l'inverseur 12, afin de commander le sens de rotation du moteur 11.The universal motor 11 comprises in particular two terminals 110 and 111 for access to the rotor, and two terminals 112 and 113 for access to the inductor. The terminal P is connected to a first movable stud of a double inverter 12, the four fixed studs of which are linked in pairs, and the second movable stud of which is connected to the inductor terminal 112. The inductor terminal 113 is connected to terminal N by means of a triac 15 here. Each rotor terminal 110 and 111 is respectively connected to one of the pairs of fixed studs connected to each other by the double inverter 12. Thus the direction of connection of the rotor of the motor 11, relative to the direction of connection of its inductor, is controlled by the movable studs of the inverter 12, in order to control the direction of rotation of the motor 11.

Chaque organe 14′ a ici une borne reliée directement à la borne N, l'autre étant reliée à la borne P par l'intermédiaire d'un contact 14. Chaque contact 14 est pourvu d'un plot fixe et d'un plot mobile, pour former un interrupteur.Each member 14 ′ here has a terminal connected directly to terminal N, the other being connected to terminal P via a contact 14. Each contact 14 is provided with a fixed pad and a movable pad , to form a switch.

Un contact 16, pourvu d'un plot fixe et d'un plot mobile formant interrupteur, relie une connexion 26 à la borne N.A contact 16, provided with a fixed pad and a movable pad forming a switch, connects a connection 26 to the terminal N.

Chaque organe 24′ a une borne reliée directement à la connexion 26, l'autre étant reliée à la borne P par l'intermédiaire d'un contact 24. Les contacts 24 sont identiques aux contacts 14.Each member 24 ′ has a terminal connected directly to the connection 26, the other being connected to the terminal P via a contact 24. The contacts 24 are identical to the contacts 14.

Chaque interrupteur 14 permet d'alimenter ou non, l'organe correspondant 14′. De même, chaque interrupteur 24 permet d'alimenter, ou non, l'organe correspondant 24′, sous réserve toutefois que l'interrupteur 16 soit fermé. L'interrupteur 16 est dit interrupteur général dans la mesure où, s'il est ouvert, aucun organe 24′ n'est alimenté, même si l'interrupteur correspondant 24 est fermé.Each switch 14 allows powering or not, the corresponding member 14 ′. Similarly, each switch 24 makes it possible to supply, or not, the corresponding member 24 ′, provided however that the switch 16 is closed. The switch 16 is said to be the general switch insofar as, if it is open, no member 24 ′ is supplied, even if the corresponding switch 24 is closed.

Un premier et un deuxième groupe de contacts de codage de position, notés 13 et 23 respectivement, relient une borne VCC d'un circuit électronique 40, délivrant une tension continue, à un premier et un deuxième groupe d'entrées binaires, notées 13′ et 23′ respectivement, dont est pourvu le circuit électronique 40.A first and a second group of position coding contacts, denoted 13 and 23 respectively, connect a VCC terminal of an electronic circuit 40, delivering a DC voltage, to a first and a second group of binary inputs, denoted 13 ′ and 23 ′ respectively, which is provided with the electronic circuit 40.

Une première extrémité de la résistance de chauffage 7 est reliée à la borne P par l'intermédiaire d'un contact 17, et sa deuxième extrémité est reliée à la connexion 26 par l'intermédiaire d'un contact 27.A first end of the heating resistor 7 is connected to the terminal P via a contact 17, and its second end is connected to the connection 26 via a contact 27.

Les contacts 13, 23, 17 et 27 sont identiques aux contacts 14 et 24, c'est-à-dire que chacun d'entre eux est pourvu d'un plot fixe et d'un plot mobile pour former un interrupteur.The contacts 13, 23, 17 and 27 are identical to the contacts 14 and 24, that is to say that each of them is provided with a fixed pad and a movable pad to form a switch.

Le circuit électronique 40, branché entre les bornes N et P, commande un moteur 41, ici un moteur synchrone à double sens, ainsi que le triac 15.The electronic circuit 40, connected between the terminals N and P, controls a motor 41, here a two-way synchronous motor, as well as the triac 15.

L'arbre de sortie 410 du moteur 41 entraîne des cames, non représentées sur la figure 1, qui exercent sur les plots mobiles de l'inverseur double 12 et des interrupteurs 13, 14, 16, 17, 27, 23 et 24 des forces schématisées par les flèches F. Les forces F agissent contre des forces de rappel des plots mobiles pour les déplacer et les mettre en contact avec le plot fixe correspondant, ou au contraire les en écarter.
Le programmateur comprend le circuit électronique 40, le moteur 41, l'inverseur double 12, les interrupteurs 13, 14, 16, 17, 27, 23 et 24 de la figure 1, ainsi que les cames dont il a été question, et qui vont maintenant être décrites en référence à la figure 2.The output shaft 410 of the motor 41 drives cams, not shown in FIG. 1, which exert on the moving studs of the double inverter 12 and of the switches 13, 14, 16, 17, 27, 23 and 24 of the forces shown schematically by the arrows F. The forces F act against the restoring forces of the mobile pads to move them and put them in contact with the corresponding fixed pad, or on the contrary move them away.
The programmer includes the electronic circuit 40, the motor 41, the double reverser 12, the switches 13, 14, 16, 17, 27, 23 and 24 of FIG. 1, as well as the cams which have been discussed, and which will now be described with reference to FIG. 2.

Il apparaît, sur cette figure, que ces cames, circulaires, sont réparties en deux blocs 1 et 2.It appears in this figure that these circular cams are distributed in two blocks 1 and 2.

Le premier bloc 1 comprend ici deux cames 12˝ qui actionnent respectivement chacun des plots mobiles de l'inverseur 12, des cames 13˝ de codage de position, qui actionnent respectivement les interrupteurs 13, des cames 14˝ qui actionnent respectivement les interrupteurs 14, ainsi qu'une came 16˝ et une came 17˝ qui actionnent respectivement les interrupteurs 16 et 17.The first block 1 here comprises two cams 12˝ which respectively actuate each of the movable studs of the inverter 12, cams 13˝ of position coding, which actuate the switches 13 respectively, cams 14˝ which actuate the switches 14 respectively, as well as a 16˝ cam and a 17˝ cam which actuate the switches 16 and 17 respectively.

Le deuxième bloc 2 comprend une came 27˝ qui actionne l'interrupteur 27, des cames 23˝ de codage de position, qui actionnent respectivement les interrupteurs 23, et des cames 24˝ qui actionnent respectivement les interrupteurs 24.The second block 2 includes a cam 27˝ which actuates the switch 27, cams 23˝ for position coding, which respectively actuate the switches 23, and cams 24˝ which actuate the switches 24 respectively.

A l'intérieur d'un bloc, les cames sont solidaires entre elles, et chacun des deux blocs 1 et 2 est mobile en rotation autour d'un axe commun 3.Inside a block, the cams are integral with each other, and each of the two blocks 1 and 2 is movable in rotation about a common axis 3.

Les cames 13˝ et 23˝ de codage de position ont des profils prévus pour qu'un microprocesseur interne au circuit électronique 40 et raccordé à ses entrées 13′ et 23′ connaisse à tout instant la position de chacun des blocs de cames 1 et 2. A cet effet, et de façon connue, les cames 23˝ réalisent ici un codage absolu de la position du bloc 2, tandis que les cames 13˝ comportent chacune un assez grand nombre de dents pour que le microprocesseur, par comptage d'impulsions, détermine l'amplitude des déplacements du bloc 1, et donc, à partir de sa position d'origine, l'amplitude de ses déplacements. Les cames 13˝ sont ici au nombre de deux et leurs dents sont légèrement décalées pour permettre la détermination du sens de déplacement du bloc 1.The position coding cams 13˝ and 23˝ have profiles provided so that a microprocessor internal to the electronic circuit 40 and connected to its inputs 13 ′ and 23 ′ knows at all times the position of each of the blocks of cams 1 and 2 To this end, and in a known manner, the cams 23˝ here perform an absolute coding of the position of the block 2, while the cams 13˝ each comprise a sufficiently large number of teeth so that the microprocessor, by counting pulses , determines the amplitude of the displacements of block 1, and therefore, from its original position, the amplitude of its displacements. The cams 13˝ are here two in number and their teeth are slightly offset to allow the determination of the direction of movement of the block 1.

Chaque plot mobile, non représenté dans un souci de simplicité, est disposé sur une lame actionnée par un levier, qui coopère avec le profil de la came correspondante. A cet effet, et de façon non représentée, chacun des leviers est soumis à l'action d'une force exercée par exemple par un ressort, qui le rappelle contre le profil de la came correspondante, c'est-à dire vers l'axe 3.Each movable stud, not shown for the sake of simplicity, is arranged on a blade actuated by a lever, which cooperates with the profile of the corresponding cam. To this end, and not shown, each of the levers is subjected to the action of a force exerted for example by a spring, which recalls it against the profile of the corresponding cam, that is to say towards the axis 3.

De part et d'autre de chacun des plots mobiles de l'inverseur 12 sont disposés les deux plots fixes correspondants. Le profil de chacune des cames 12˝ comprend des bosses et des creux.On either side of each of the movable studs of the inverter 12 are arranged the two corresponding fixed studs. The profile of each of the cams 12˝ includes bumps and hollows.

Lorsque un des leviers actionnant une lame portant un des plots mobiles de l'inverseur 12 est sur une bosse, le contact mobile touche le contact fixe le plus éloigné de l'axe 3, et lorsque le levier est sur un creux, le contact mobile touche le contact fixe le plus proche de l'axe 3.When one of the levers actuating a blade carrying one of the movable studs of the reverser 12 is on a bump, the movable contact touches the fixed contact furthest from the axis 3, and when the lever is on a hollow, the movable contact touches the fixed contact closest to axis 3.

Il en résulte notamment, compte tenu de la fonction de l'inverseur double 12, que le profil d'une came 12˝ comprend successivement un creux correspondant à une bosse de l'autre came 12˝, puis une bosse correspondant à un creux de l'autre came 12˝,et ainsi de suite. Ainsi est assurée une inversion du sens du branchement du rotor du moteur 11.It follows in particular, taking into account the function of the double reverser 12, that the profile of a cam 12˝ successively comprises a recess corresponding to a boss of the other cam 12˝, then a boss corresponding to a recess of the other cam 12˝, and so on. This ensures a reversal of the direction of connection of the rotor of the motor 11.

Les plots fixes de chacun des interrupteurs 13, 14, 16, 17, 27, 23 et 24 sont disposés à côté des plots mobiles correspondants, et les cames 13˝, 14˝, 16˝, 17˝, 27˝, 23˝ et 24˝ comportent seulement des portions de profil neutre et des bosses. Les portions de profil neutre laissent l'interrupteur correspondant ouvert, tandis que les bosses le ferment, ou inversement.The fixed pads of each of the switches 13, 14, 16, 17, 27, 23 and 24 are arranged next to the corresponding movable pads, and the cams 13˝, 14˝, 16˝, 17˝, 27˝, 23˝ and 24˝ have only neutral profile portions and bumps. The neutral profile portions leave the corresponding switch open, while the bumps close it, or vice versa.

Le moteur 41 entraîne le bloc 1 par l'intermédiaire d'un réducteur 42.The motor 41 drives the block 1 via a reduction gear 42.

La came 17˝ qui est ici celle qui est la plus proche du bloc 2, est pourvue d'un cliquet 171 monté pivotant autour d'un axe 172 solidaire de la came 17˝. L'axe 172 est parallèle à l'axe 3 et il est disposé à distance de cet axe 3. Le cliquet 171 est pourvu d'une extrémité pointue orientée vers l'axe 3, rappelée par un ressort 173 qui tend à l'éloigner de cet axe 3. Le ressort 173 est solidaire de la came 17˝.The cam 17˝ which is here that which is closest to the block 2, is provided with a pawl 171 mounted pivoting about an axis 172 integral with the cam 17˝. The axis 172 is parallel to the axis 3 and it is arranged at a distance from this axis 3. The pawl 171 is provided with a pointed end oriented towards the axis 3, recalled by a spring 173 which tends to move it away of this axis 3. The spring 173 is integral with the cam 17˝.

Le cliquet 171 est destiné à coopérer d'une part avec une extrémité d'une lame élastique 174 dont l'autre extrémité est solidaire du châssis sur lequel est monté le programmateur, et d'autre part avec une denture 271 prévue sur la came 27˝, qui est ici la came du bloc 2 la plus proche du bloc 1. La denture 271 n'est visible que partiellement sur la figure 2.The pawl 171 is intended to cooperate on the one hand with one end of an elastic blade 174 the other end of which is integral with the chassis on which the programmer is mounted, and on the other hand with a toothing 271 provided on the cam 27 ˝, which is here the cam of block 2 closest to block 1. The toothing 271 is only partially visible in FIG. 2.

Comme cela apparaît plus clairement sur les figures 3a et 3b, lorsque le cliquet 171 ne coopère pas avec la lame 174, son extrémité pointue ne s'engage pas dans la denture 271 et le bloc 2 reste alors immobile quels que soient les déplacements, dans un sens ou dans l'autre, de la came 17˝ solidaire du bloc 1. Tel est le cas sur la figure 3a.As appears more clearly in FIGS. 3 a and 3 b , when the pawl 171 does not cooperate with the blade 174, its pointed end does not engage in the toothing 271 and the block 2 then remains immobile whatever the movements , in one direction or the other, of the cam 17˝ integral with the block 1. This is the case in FIG. 3 a .

Par contre, lorsque le cliquet 171 coopère avec la lame 174, celle-ci rapproche, contre l'action du ressort 173, l'extrémité pointue du cliquet 171 de la denture 271 de la came 27˝. Le cliquet 171 et la denture 271 coopèrent alors de façon connue pour procurer un couplage unidirectionnel, c'est-à-dire que le cliquet entraîne la denture dans un sens et non dans l'autre.By cons, when the pawl 171 cooperates with the blade 174, it brings, against the action of the spring 173, the pointed end of the pawl 171 of the teeth 271 of the cam 27˝. The pawl 171 and the toothing 271 then cooperate in a known manner to provide a unidirectional coupling, that is to say that the pawl drives the toothing in one direction and not in the other.

Comme cela apparaît sur la figure 3b, si la came 17˝ tourne dans ici le sens trigonométrique noté T, le bloc 2 se trouve entraîné par le bloc 1, tandis que si la came 17˝ tourne dans le sens horaire noté H, le bloc 2 n'est pas entraîné par le bloc 1. Ici, la lame 174 est prévue pour que le secteur α sur lequel le couplage mécanique unidirectionnel est activé ait une valeur de 6°. Ainsi, la lame 174 rend actif le couplage unidirectionnel entre les blocs 1 et 2 sur une portion seulement de la plage de déplacement du bloc 1, portion correspondant ici au secteur α.As shown in FIG. 3 b , if the cam 17˝ rotates in the counterclockwise direction noted T, the block 2 is driven by the block 1, while if the cam 17˝ rotates in the clockwise direction noted H, the block 2 is not driven by block 1. Here, the blade 174 is provided so that the sector α on which the unidirectional mechanical coupling is activated has a value of 6 °. Thus, the blade 174 makes active the unidirectional coupling between the blocks 1 and 2 over only a portion of the range of displacement of the block 1, a portion corresponding here to the sector α.

Le bloc 2 est solidaire en rotation d'un dispositif 6 qui permet à l'utilisateur de la machine à laver de sélectionner un programme de lavage choisi parmi l'ensemble des programmes disponibles, lorsque la machine est au repos. Lorsque la machine est en fonctionnement, le dispositif 6 peut permettre également l'affichage de l'étape de programme qui est en train de s'accomplir.The block 2 is integral in rotation with a device 6 which allows the user of the washing machine to select a washing program chosen from all of the available programs, when the machine is at rest. When the machine is in operation, the device 6 can also allow the display of the program step which is being carried out.

Le programmateur qui vient d'être décrit fonctionne comme cela va maintenant être décrit.The programmer which has just been described operates as will now be described.

Tout d'abord, afin de sélectionner le programme choisi, l'utilisateur de la machine place le dispositif 6 dans une position déterminée correspondant au programme sélectionné.First of all, in order to select the chosen program, the user of the machine places the device 6 in a determined position corresponding to the selected program.

Ceci a pour effet d'amener le bloc 2 dans une position particulière que le circuit 40 détermine en réponse aux signaux binaires sur ses entrées 23′, qui procurent ici un codage absolu de la position du bloc 2, comme cela a été indiqué.This has the effect of bringing the block 2 into a particular position that the circuit 40 determines in response to the binary signals on its inputs 23 ′, which here provide an absolute coding of the position of the block 2, as has been indicated.

Le microprocesseur ayant déterminé le programme choisi, c'est lui qui commande le reste du programmateur pour que le programme se déroule comme suit.The microprocessor having determined the chosen program, it is he who controls the rest of the programmer so that the program proceeds as follows.

On suppose par exemple que le programme à exécuter est un programme de lavage très simple, qui comprend le remplissage en eau de la machine, le chauffage de l'eau, et la vidange de la machine, ces trois phases étant accompagnées de mouvements de rotation dans un sens, et dans l'autre, du tambour de la machine.It is assumed for example that the program to be executed is a very simple washing program, which includes filling the machine with water, heating the water, and emptying the machine, these three phases being accompanied by rotational movements. in one direction and in the other, of the drum of the machine.

On suppose de plus ici que l'électrovanne d'admission d'eau et la pompe de vidange sont des organes 24′ commandés par le bloc 2.It is further assumed here that the water intake solenoid valve and the drain pump are members 24 ′ controlled by block 2.

Le circuit 40 commande d'abord le triac 15 de façon à ce que celui-ci reste ouvert. Le moteur 11 est donc à l'arrêt. Il commande ensuite le moteur 41 pour amener le bloc 1 dans la position de la figure 3b où le bloc 2 est couplé au bloc 1, dans le sens T. La came 16˝ de commande de l'interrupteur général 16 est pourvue d'une bosse qui commande l'ouverture de l'interrupteur général 16 lorsque le bloc 1 se trouve dans le secteur de 6° où le cliquet 171 est actif.The circuit 40 first controls the triac 15 so that it remains open. The engine 11 is therefore stopped. It then controls the motor 41 to bring the block 1 to the position of FIG. 3 b where the block 2 is coupled to the block 1, in the direction T. The cam 16˝ for controlling the general switch 16 is provided with a bump which controls the opening of the general switch 16 when the block 1 is in the sector of 6 ° where the pawl 171 is active.

Le circuit 40 commande alors au bloc 1 une suite de mouvements de va-et-vient d'amplitude 6°. A chacun de ces mouvements, le bloc 2 se déplace de 6° dans le sens T. Le circuit 40 amène donc ainsi le bloc 2 dans la position où l'interrupteur 24 qui commande la vanne d'admission d'eau est fermé. Naturellement, il est prévu, dans le circuit 40, une mémoire dans laquelle sont stockées les positions des creux et des bosses de toutes les cames. Du fait que l'interrupteur général 16 est ouvert et interdit alors l'alimentation des organes 24′, ceux-ci ne peuvent être mis sous tension de façon intempestive pendant ces déplacements du bloc 2.The circuit 40 then commands block 1 a series of back and forth movements of amplitude 6 °. At each of these movements, the block 2 moves 6 ° in the direction T. The circuit 40 therefore brings the block 2 into the position where the switch 24 which controls the water inlet valve is closed. Naturally, there is provided, in circuit 40, a memory in which the positions of the hollows and the bumps of all the cams are stored. Because the general switch 16 is open and then prohibits the supply of the organs 24 ′, these cannot be inadvertently energized during these movements of the block 2.

Le microprocesseur du circuit 40 commande alors l'entraînement du bloc 1 en dehors du secteur α où le cliquet 171 est actif. Il en résulte la fermeture de l'interrupteur général 16, ce qui rend effective l'admission d'eau. Le microprocesseur peut alors commander le bloc 1 pour effectuer alors, pendant le remplissage, tout sous-programme approprié. Dans l'exemple très simple actuellement décrit, le microprocesseur commande d'une part le triac 15 pour régler la vitesse du moteur 11, et d'autre part le mouvement du bloc 1 pour commander la rotation dans un sens, puis dans l'autre, du tambour entraîné par le moteur 11. Naturellement, la durée de la rotation dans un sens, celle de la rotation dans l'autre sens, et le cas échéant celle du palier qui les sépare au cours duquel le tambour reste immobile sont variables par simple commande électronique en jouant sur le moteur 41, et le triac 15.The microprocessor of circuit 40 then controls the drive of block 1 outside the sector α where the pawl 171 is active. This results in the closing of the general switch 16, which makes the water intake effective. The microprocessor can then control the block 1 to then carry out, during filling, any appropriate subroutine. In the very simple example currently described, the microprocessor controls on the one hand the triac 15 to adjust the speed of the motor 11, and on the other hand the movement of the block 1 to control the rotation in one direction, then in the other , of the drum driven by the motor 11. Naturally, the duration of the rotation in one direction, that of rotation in the other direction, and where appropriate that of the bearing which separates them during which the drum remains stationary are variable by simple electronic control by playing on the motor 41, and the triac 15.

Il est à noter que, du fait que le bloc 1 peut être entraîné, dans un sens ou dans l'autre, sur un angle ici égal à 354° sans qu'il en résulte un déplacement du bloc 2, les possibilités de commande d'un sous-programme par le bloc 1, pendant que le bloc 2 reste immobile, sont extrêmement nombreuses et variées.It should be noted that, since the block 1 can be driven, in one direction or the other, over an angle here equal to 354 ° without resulting in a displacement of the block 2, the possibilities of control d 'a subroutine by block 1, while block 2 remains stationary, are extremely numerous and varied.

Dès que la cuve est remplie, le microprocesseur en est averti par exemple par un détecteur de niveau non représenté car connu. Il peut commander, par l'intermédiaire du circuit 40, le triac 15 pour arrêter le moteur 11, et déplacer le bloc 1 pour l'amener dans le secteur α où le cliquet 171 est actif, et où l'interrupteur général 16 est ouvert. L'admission d'eau est donc arrêtée.As soon as the tank is filled, the microprocessor is notified, for example by a level detector, not shown as it is known. It can control, via the circuit 40, the triac 15 to stop the engine 11, and move the block 1 to bring it into the sector α where the pawl 171 is active, and where the main switch 16 is open . The water intake is therefore stopped.

Une suite de mouvements de va-et-vient du bloc 1 est alors commandée pour amener le bloc 2 dans une position où la came 27˝ présente un creux au levier qui commande l'interrupteur 27′. Toutefois ici, et comme cela apparaît sur la figure 2, les leviers actionnés par les cames 17˝ et 27˝ sont solidaires l'un de l'autre. Il en résulte que les interrupteurs 17 et 27 sont toujours simultanément dans le même état. Ceci est imposé pour des raisons de sécurité. Les interrupteurs 17 et 27 ne peuvent être fermés que si chacun des deux leviers qui les actionnent est dans un creux de la came 17˝ ou 27˝ correspondante, puisque dès que l'un des leviers est sur une bosse, il entraîne l'autre en position haute. Ici, le microprocesseur laisse donc le bloc 2 dans la position où la came 27˝ présente un creux au levier associé, et déplace le bloc 1 pour l'amener dans une zone où la came 17˝ présente un creux au levier qui lui est associé. Le chauffage de l'eau commence alors.A series of back and forth movements of the block 1 is then commanded to bring the block 2 into a position where the cam 27˝ has a hollow in the lever which controls the switch 27 ′. However here, and as shown in Figure 2, the levers actuated by the cams 17˝ and 27˝ are integral with one another. As a result, the switches 17 and 27 are always simultaneously in the same state. This is imposed for security reasons. The switches 17 and 27 can only be closed if each of the two levers which actuate them is in a hollow of the corresponding cam 17˝ or 27˝, since as soon as one of the levers is on a bump, it drives the other in the high position. Here, the microprocessor therefore leaves the block 2 in the position where the cam 27˝ has a hollow in the associated lever, and moves the block 1 to bring it into an area where the cam 17˝ has a hollow in the lever associated with it. The water heating then begins.

Ici, cette zone devra être d'amplitude suffisante pour permettre des mouvements de va-et-vient du bloc 1 commandant les inversions du sens de rotation du tambour pendant le chauffage. Naturellement, s'il est jugé souhaitable d'avoir, pendant le chauffage, des mouvements de va-et-vient de durées différentes, par exemple, de ce qu'ils étaient au cours du remplissage, ceci est parfaitement possible.Here, this zone must be of sufficient amplitude to allow back and forth movements of the block 1 controlling the reversals of the direction of rotation of the drum during heating. Naturally, if it is deemed desirable to have, during heating, back and forth movements of different durations, for example, than they were during filling, this is perfectly possible.

Le programme de lavage peut ainsi se dérouler jusqu'à la fin avec, comme cela a été souligné, une grande souplesse dans la commande des organes 14′ susceptibles d'être commandés par le bloc 1 pendant que le bloc 2 reste immobile.The washing program can thus run to the end with, as has been pointed out, great flexibility in the control of the members 14 ′ capable of being controlled by the block 1 while the block 2 remains stationary.

Ici, le bloc 2 a pour fonction d'une part de commander les organes tels que les organes 24′, et d'autre part d'indiquer au microprocesseur du circuit 40, par l'intermédiaire des informations de codage absolu sur les entrées binaires 23′, les tâches qu'il doit commander. Le nombre de pas de codage absolu sur les cames 23 est ici supérieur au nombre de pas différents des cames 24. Par exemple, l'ensemble des cames 24 qui commandent les organes de puissance peut être divisé en 60 secteurs, ou pas, correspondant chacun à l'alimentation d'un organe 24′ particulier, ou d'une combinaison particulière d'organes 24′. Dans ce cas, le codage absolu effectué par les cames 23 peut correspondre à 120 pas de 3°, ou même à un plus grand nombre de pas encore, correspondant chacun à un sous-programme particulier à exécuter à l'intérieur d'un même pas des 60 pas dont il a été question.Here, the function of block 2 is on the one hand to control the organs such as the organs 24 ′, and on the other hand to indicate to the microprocessor of the circuit 40, via the absolute coding information on the binary inputs. 23 ′, the tasks he must order. The number of absolute coding steps on the cams 23 is here greater than the number of different steps of the cams 24. For example, the set of cams 24 which control the power members can be divided into 60 sectors, or not, each corresponding to the supply of a particular 24 ′ organ, or of a particular combination of 24 ′ organs. In this case, the absolute coding carried out by the cams 23 can correspond to 120 steps of 3 °, or even to a greater number of steps still, each corresponding to a particular subroutine to be executed within the same not the 60 steps that were discussed.

Le bloc 2 peut également, comme dans les programmateurs de l'art antérieur, être divisé en une pluralité de secteurs angulaires correspondant chacun à un programme différent, le choix d'un de ces programmes étant fait en déplaçant le bloc 2 pour l'amener au début du secteur correspondant et le déroulement de ce programme étant obtenu en faisant ensuite balayer ce secteur par le bloc 2. Dans un tel cas, c'est le bloc 2 qui mémorise, au moins en partie, les programmes de lavage.Block 2 can also, as in the programmers of the prior art, be divided into a plurality of angular sectors each corresponding to a different program, the choice of one of these programs being made by moving block 2 to bring it at the start of the corresponding sector and the progress of this program being obtained by then sweeping this sector by block 2. In such a case, it is block 2 which memorizes, at least in part, the washing programs.

Le bloc 2 peut encore être tel que chaque came ne comprend qu'une seule bosse, réparties pour que le bloc 2 comporte une pluralité de secteurs, à l'intérieur de chacun desquels un seul organe se trouve alimenté, en principe. Naturellement, si l'on prévoit qu'il sera parfois nécessaire d'alimenter en même temps deux ou plusieurs organes les secteurs correspondants seront prévus. Dans ce cas, la structure mécanique du bloc 2 est plus simple, et les programmes sont mémorisés dans le circuit électronique. Celui-ci commande le bloc 2 non plus pour avancer d'un pas de programme à chaque fois, sans se préoccuper de l'organe qui va être ainsi mis en marche, mais pour aller mettre en marche un organe déterminé, à commander au cours de ce pas de programme.The block 2 can also be such that each cam comprises only a single bump, distributed so that the block 2 comprises a plurality of sectors, inside each of which a single member is supplied, in principle. Naturally, if it is foreseen that it will sometimes be necessary to supply two or more organs at the same time, the corresponding sectors will be provided. In this case, the mechanical structure of block 2 is simpler, and the programs are stored in the electronic circuit. This one controls block 2 either to advance by one step of the program each time, without worrying about the organ which is going to be thus started, but to go to start a determined organ, to be ordered during of this program step.

Il est possible de loger, sur la portion restante d'ici 354° environ qui est disponible pour les déplacements du bloc 1 indépendants de ceux du bloc 2, plusieurs zones correspondant chacune à un sous-programme particulier, comme par exemple une régulation du séchage pour les machines séchantes, ou encore un rinçage en eau courante, sans augmentation notable de la complexité du programmateur.It is possible to accommodate, on the remaining portion by about 354 ° which is available for movements of block 1 independent of those of block 2, several zones each corresponding to a particular subroutine, such as for example a drying regulation. for drying machines, or a water rinse common, without any notable increase in the complexity of the programmer.

Par ailleurs, il est possible de prévoir, sur le moteur universel 11, un inducteur à prise intermédiaire, pour n'utiliser qu'une partie de cet inducteur lorsqu'on a besoin que le moteur 11 tourne à vitesse très élevée. Dans ce cas, un inverseur simple, actionné par une came du bloc 2, commande le branchement de la totalité ou d'une partie seulement de l'inducteur.Furthermore, it is possible to provide, on the universal motor 11, an inductor with an intermediate tap, so as to use only part of this inductor when the motor 11 is required to rotate at very high speed. In this case, a simple inverter, actuated by a cam of block 2, controls the connection of all or only part of the inductor.

De même, les moyens de couplage mécanique entre les blocs 1 et 2 qui ont été décrits ne sont pas limitatifs, et il est possible notamment de changer la forme du cliquet et de la denture ou d'utiliser un autre dispositif de couplage unidirectionnel, actif sur une portion seulement du bloc 1.Likewise, the mechanical coupling means between the blocks 1 and 2 which have been described are not limiting, and it is possible in particular to change the shape of the pawl and the teeth or to use another active, unidirectional coupling device on only a portion of block 1.

De même, dans l'exemple décrit, les cames du premier bloc 1 comprennent des cames relatives à l'inversion du sens de rotation du moteur du tambour, tandis que celle du deuxième bloc 2 comprennent des cames relatives à la commande des autres organes de la machine. Si une telle répartition est intéressante, comme on l'a vu, dans le cas d'une machine à laver le linge, elle n'est, même dans ce cas, pas obligatoire et l'homme du métier est à même de choisir la répartition qui est la plus intéressante, compte tenu du problème spécifique à résoudre.Similarly, in the example described, the cams of the first block 1 include cams relating to the reversal of the direction of rotation of the drum motor, while that of the second block 2 comprises cams relating to the control of the other organs of the machine. If such a distribution is advantageous, as we have seen, in the case of a washing machine, it is not, even in this case, not compulsory and the person skilled in the art is able to choose the which distribution is the most interesting, taking into account the specific problem to be solved.

Naturellement, le programmateur n'est pas limité à la commande d'une pluralité d'organes réunis au sein d'un même appareil, et peut être utilisé dans le cas d'un système industriel comprenant une pluralité d'organes disséminés.Naturally, the programmer is not limited to controlling a plurality of organs assembled within the same device, and can be used in the case of an industrial system comprising a plurality of disseminated organs.

Claims (7)

  1. Programmer for a device or system, provided with a plurality of electrical members (11, 14′, 24′) to be supplied selectively and sequentially, a programmer comprising a plurality of cams (12˝, 14˝, 17˝, 27˝, 24˝), cooperating with a plurality of contacts (12, 14, 17, 27, 24) for the power supply to the said members, and means (40-41) for displaceably driving the said cams, and in which:
    - the said cams are divided into a first (1) and a second (2) group, and
    - means (171, 271) are provided for mechanical coupling between the said first (1) and the said second (2) groups, characterised in that:
    - the said driving means (40, 41) are arranged to drive the said first group (1) in both directions, and
    - the said coupling means are active in one direction, and over only a first portion (α) of the range of movement of the said first group (1).
  2. Programmer according to claim 1, in which means (16˝, 16) are provided to prevent the power supply to the electrical members (7, 24′) with respect to the cams (27˝, 24˝) of the said second group (2) when the said first group (1) moves within the said first portion (α).
  3. Programmer according to claim 2, in which the said supply-preventing means comprise a cam (16˝) and a switch (16) actuated by this cam.
  4. Programmer according to any of claims 1 to 3, in which the second, remaining, portion of the range of movement of the said first group (1), second portion for which the said mechanical coupling means (171, 271) are not active either in one direction nor the other, is divided into a plurality of zones, each corresponding to a sub-programme which can be controlled by the said first group (1).
  5. Programmer according to any of claims 1 to 4, in which means (23, 23′) are provided for encoding the position of the said second group (2), and means (40) for, in response to the encoded position of the said second group (2), determining the tasks to be controlled by the programmer.
  6. Programmer according to any of claims 1 to 5, in which the said mechanical coupling means comprise a ratchet lever (171) firmly fixed to the said first group (1), serration (271) firmly fixed to the said second group (2), and elastic means (174) to bring the said ratchet lever (171) back against the said serration (271) when the said first group (1) moves through the said first portion (α).
  7. Application of the programmer according to any of claims 1 to 6, for the control of a washing machine provided with a drum and means (11) for rotationally driving the said drum, the said first group (1) comprising cams (12˝) cooperating with switches (12) for the supply of power to the said means (11) for rotationally driving the drum, in order to reverse the direction of the said rotation.
EP90403158A 1989-11-09 1990-11-07 Programmer, in particular for an electric household appliance, with two blocks coupled locally in one direction Expired - Lifetime EP0427623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914694A FR2654252B1 (en) 1989-11-09 1989-11-09 PROGRAMMER, ESPECIALLY FOR HOUSEHOLD APPLIANCES, WITH TWO LOCALLY COUPLED BLOCKS IN ONE SENSE.
FR8914694 1989-11-09

Publications (2)

Publication Number Publication Date
EP0427623A1 EP0427623A1 (en) 1991-05-15
EP0427623B1 true EP0427623B1 (en) 1995-08-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90403158A Expired - Lifetime EP0427623B1 (en) 1989-11-09 1990-11-07 Programmer, in particular for an electric household appliance, with two blocks coupled locally in one direction

Country Status (6)

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EP (1) EP0427623B1 (en)
AT (1) ATE125977T1 (en)
BR (1) BR9001220A (en)
DE (1) DE69021329T2 (en)
ES (1) ES2078326T3 (en)
FR (1) FR2654252B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426681A1 (en) * 1994-07-28 1996-02-01 Ako Werke Gmbh & Co Program switching mechanism

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE499954A (en) * 1950-12-09
FR1503474A (en) * 1965-12-11 1967-11-24 Zanussi A Spa Industrie Improvements to the system for advancing programmers and relays, especially household appliances
ES333145A1 (en) * 1965-12-24 1967-09-01 Crouzet Sa Improvements in the programmers for washing machines and similar machines. (Machine-translation by Google Translate, not legally binding)
DE3416866A1 (en) * 1984-05-08 1985-11-14 AKO-Werke GmbH & Co KG, 7988 Wangen Program switch unit

Also Published As

Publication number Publication date
DE69021329D1 (en) 1995-09-07
FR2654252A1 (en) 1991-05-10
DE69021329T2 (en) 1996-10-02
ES2078326T3 (en) 1995-12-16
ATE125977T1 (en) 1995-08-15
BR9001220A (en) 1991-10-15
FR2654252B1 (en) 1992-02-14
EP0427623A1 (en) 1991-05-15

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