EP0323343B1 - Programmschalteinrichtung für Waschmaschinen - Google Patents

Programmschalteinrichtung für Waschmaschinen Download PDF

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Publication number
EP0323343B1
EP0323343B1 EP19880403325 EP88403325A EP0323343B1 EP 0323343 B1 EP0323343 B1 EP 0323343B1 EP 19880403325 EP19880403325 EP 19880403325 EP 88403325 A EP88403325 A EP 88403325A EP 0323343 B1 EP0323343 B1 EP 0323343B1
Authority
EP
European Patent Office
Prior art keywords
pawl
wheel
lever
driving
cams
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
EP19880403325
Other languages
English (en)
French (fr)
Other versions
EP0323343A1 (de
Inventor
Jean Vollot
André Vanneyre
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
Thales Avionics SAS
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 Thales Avionics SAS, Crouzet Appliance Controls SA filed Critical Thales Avionics SAS
Publication of EP0323343A1 publication Critical patent/EP0323343A1/de
Application granted granted Critical
Publication of EP0323343B1 publication Critical patent/EP0323343B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 washing machine, laundry or tableware programmer.
  • a set, or block, of program cams intended to actuate contact carrier blades, can be driven in rotation, by means of a particular kinematics, by a so-called reversing cam.
  • the washing programs are thus determined by the profiles of the program cams, their rotation and their stopping.
  • the reversing cam is continuously driven continuously by a synchronous motor during the course of the washing programs.
  • a drive pawl is mounted on the reversing cam to cause the cam block to rotate step by step, rotation of the reversing cam one turn may cause the cam block to move one step.
  • the drive pawl is pivotally mounted between a position for driving the cam block and a retracted position, or for delaying, in which it does not drive the cam block.
  • the cam block includes a so-called timing cam, with a generally three-level profile, which, by means of the kinematics mentioned above, makes it possible to pivot the drive pawl in the retracted position to prevent it from '' drive the cam block for a specified number of turns of the reversing cam.
  • This kinematics comprises a follower lever pivotally mounted, on a fixed axis, to follow the profile of the timing cam, and which are pivotally connected two timing levers.
  • Each of these timing levers is pierced with a light through which passes a movable lug and which is integral with a ramp for retracting the drive pawl.
  • Each of the timing levers is associated with one of the levels of the profile of the timing cam and a memory wheel, the profile of which has a projecting part, defining a time delay, and arranged to cooperate with its associated lever.
  • a spike wheel, integral in rotation with the reversing cam is arranged to drive in rotation step by step in one direction the memory wheels, also recalled in the opposite direction by elastic means.
  • the associated timing lever When the follower lever comes into contact with one of the two other levels of the timing cam profile, the associated timing lever is pivoted, its light moves the lug and the retracting ramp, which stops the drive of the cam block by the drive pawl.
  • the timing lever considered then cooperates with the low profile of the associated memory wheel to provide a non-return function and thus allow the memory wheel to be driven step by step, until the timing lever rises on the projecting part of its profile. Then, the delay lever pivots in the opposite direction, the memory wheel is recalled to the initial position, the retracting ramp and the lug are released by the light on the lever, and the camshaft drive is resumed.
  • each of the two low levels selects a non-zero delay, the duration of which is determined by the length of the low profile of the corresponding memory wheel.
  • the memory levers and the associated memory wheels are arranged so that only one of these levers can cooperate with its associated memory wheel at a time.
  • the present invention aims to overcome this drawback.
  • the present invention relates to a washing machine programmer comprising a block of program cams, a continuously driven reversing cam, a pawl mounted pivotally between a position for driving the cam block in rotation by a pitch and a retracted timing position, said cam block comprising a timing cam provided with a profile for selecting one of a series of timings, and means arranged to determine the timing durations and rotate the cam block drive ratchet, these means comprising a lever arranged to follow the profile of the timing cam, a memory wheel, a spike wheel integral in rotation with the reversing cam and arranged to drive the wheel in rotation memory, and a timing lever arranged to cooperate with the memory wheel and the drive ratchet of the cam block, programmer characterized in that it comprises a portion of sector-shaped disc, of determined angular width, rotatably mounted on the axis of the memory wheel and of radius equal to the external radius of the wheel, and a pawl, rocked and arranged to drive the memory wheel
  • the drive pawl of the memory wheel is driven in its rocking movement by a lever pivotally mounted under the action of the rotation drive of the spike wheel.
  • the disc portion comprises a notch receiving a lug secured to the follower lever, the angular position of the follower lever determining the angular position of the disc portion and the timing lever is pivotally mounted and can cooperate with a ratchet toothing of the memory wheel, to ensure a non-return function, and with the drive pawl to keep it in the retracted time delay position.
  • the programmer for washing machine, laundry or dishes, comprises a rear module and a cam block 41.
  • the rear module supports a drive motor, here a synchronous motor, and includes a contact box intended to ensure the electrical connection with the other parts of the washing machine, as well as a timing and drive device for the cam block.
  • the cam block attached to the rear module, includes a certain number of cams joined to one another and integral in rotation with one another, with the exception of the first cam, the reversing cam 1, which is driven directly at constant speed by the motor and rotates continuously and continuously during the course of the program.
  • the reversing cam can cause the cam block to rotate step by step using a pawl 37 which can cause the cam block to rotate one step at each revolution of the reversing cam.
  • the action of the pawl can be neutralized for a certain time, the reversing cam being able to make a certain number of turns before driving the block of cams again, thanks to a kinematic timing chain.
  • the timing chain comprises the pawl 37, and means arranged to determine the timing times and rotate the pawl 37 in the driving position of the cam block, comprising a wheel 3, a rocker 5, a pawl 12, arranged for cooperate with a memory wheel 16, a follower lever 21 constituting the timing selection lever, a timing cam 23, integrated in the cam block, and a timing lever 29.
  • the reversing cam consists of a multifunctional sleeve 1. It has a circular toothing 101, in a radial plane, for its drive by the synchronous motor, via an external peripheral toothing 102 of a small pinion 103.
  • the drive pawl 37 is mounted on the pinion 103 , pivoting about an eccentric pin 46 on the pinion 103, between a possible driving position of the cam block 41, in which it is returned by a leaf spring 42, and a retracted position for timing.
  • the reversing sleeve comprises, in another radial plane, a solid circular ring 104 provided with a window 2.
  • the drive pawl 37 is of substantially parallelepiped shape.
  • the pawl 37 comprises two joined end pieces, each of thickness substantially half the total thickness of the pawl, a rounded end piece 38 and a pointed and tapered end piece 39, the end piece 38 having a width substantially double that of the end piece 39.
  • the spring 42 exerts its force, illustrated diagrammatically in FIG. 1 by a tension spring, on the zone of the pawl comprising the end pieces 38 and 39 in order to keep the end piece 38 in abutment against the full crown 104 of the reversing cam 1.
  • the combination of the restoring force exerted by the spring 42 and the circular movement of the axis 46 causes the pawl 37 in an eccentric movement, here in the clockwise direction.
  • the wheel 3 integral in rotation with the reversing cam 1, rotates continuously and permanently, here counterclockwise, with its axis housed in a hole in the programmer housing.
  • the wheel 3 carries a cylindrical pin, or lug, 4 projecting from one of the faces of the wheel, substantially at mid-radius.
  • the rocker 5 comprises, on either side of an axis 6, journalling in a hole in the programmer housing, two arms 7 and 8, here substantially equal and approximately in the extension of one another.
  • the arm 7 comes to bear against the lug 4 under the action of a traction resort 9 fixed to the arm 8, substantially half of its length, and to the housing.
  • the combination of the action of the lug 4 and the elastic return of the spring 9 causes the rocker, or lever, 5 in a rocking movement around its axis 6.
  • the arm 8, at its end opposite the axis 6 carries, perpendicular to its plane, a lug 10.
  • a pawl 12 is pivotally mounted on the lug 10, by one of its ends in the form of a sleeve 13, its other end comprising a spout 14 intended to cooperate with the teeth ratchet 25 of a memory wheel 16.
  • the memory wheel 16 is movable in rotation about its axis 17 housed in a hole in the programmer housing, and the spout 14 of the pawl 12 can thus make it rotate in rotation step by step, here in the clockwise direction , against the action of a return spring 27, the wheel 16 being after each step locked in position by a non-return stop 31 of the timing lever 29 discussed below.
  • a notch 19 is provided on the side of this portion of disc to cooperate with a lug 20 secured to the lever for selecting the timers 21.
  • the memory wheel 16 comprises, on its face opposite the disc portion 18 and on the peripheral zone thereof, a stop 24 of substantially truncated pyramid shape, with a substantially square base, the base of which faces towards the axis 17 and the apex located radially at the same distance as the apex of the toothing 25.
  • the face 45 of the stop 24, parallel to the axis of the wheel 16 and facing the disc portion 18 is inclined to form a ramp, the opposite face 28 extending substantially in a radial plane of the wheel 16.
  • a stop 26 is rigidly mounted on the programmer housing near the periphery of the wheel 16, with a finger extending to cooperate, under the action of the spring 27, with the face 28 of the stop 24.
  • the timer selection lever 21 of generally flat shape, is pivotally mounted around an axis 43, parallel to the axis of the wheel 16, and located at one of its ends and housed in a hole in the programmer housing, under the action of a spring 22 fixed to the lever and to the housing.
  • the other end of the lever 21 is bent in the shape of a spout 44 to come to bear, under the action of the spring 22, against the profile of the timing cam 23 and follow its profile.
  • the timing selection lever 21 includes a lug 20, extending parallel to the axis of the wheel 16, and housed in the notch 19 of the disc portion 18 to vary the angular position of this disc portion 18 as a function of the angular position of the follower lever 21.
  • the timing lever 29, in the form of a flat fork facing the memory wheel 16, is pivotally mounted about an axis 30 parallel to all the other axes of rotation and pivoting mentioned above and housed in a hole in the housing of the programmer.
  • One of the arms of the lever 29 ends in the form of a tooth 33 intended to come to cooperate with the face 45 of the stop 24 of the wheel 16.
  • This same arm comprises a stop 31 extending perpendicular to its face and of substantially section triangular to cooperate with the ratchet teeth 25 of the memory wheel 16, and thus serve as a non-return for this memory wheel 16.
  • a tension spring 32 fixed on the other arm of the lever 29 and on the programmer housing, tends to make the lever 29 pivot, here in a clockwise direction, to thus keep the stop 31 in contact with ratchet teeth 25.
  • the arm of the lever 29 to which the spring 32 is fixed ends in a ramp 34 cooperating by pressing with a lug 36 integral with the drive pawl 37.
  • the ramp 34 end is adjacent to the lateral surface 35 of the arm in question, extending substantially perpendicularly, and also forming a ramp.
  • the pawl 37 comprises an appendage, extending perpendicular to its plane of rotation, and the end of which carries the lug 36 extending perpendicular to its plane and which can bear against the ramp 34 of the timing lever 29.
  • the wheel 3 which can be called the driving wheel, integral in rotation with the reversing cam 1, rotates continuously and continuously. Its lug, or pin, 4 cooperates by sliding with the arm 7 of the lever 5. Under the effect of the spring 9, the lever 5 is driven in a rocking movement around its axis 6. In this movement, the spout 14 of the pawl 12, returned by the spring 15 against the ratchet teeth 25 of the memory wheel 16, can cause it to rotate over an angular distance equal to the maximum stroke of the lever 5.
  • the angular position of the selection lever 21 is fixed by the level of the timing cam 23 on which the spout 44 of the lever 21 is supported.
  • the sector 18 conceals, with regard to the spout 14, a number of teeth of the memory wheel 16, the active stroke of the pawl 12 corresponding to the number of teeth not obscured.
  • the memory wheel 16 thus rotates step by step at a speed determined by the angular position of the selection lever 21, therefore by the considered timing level which determines the distance angular, variable, on which the memory wheel 16 is driven at each revolution of the drive wheel 3.
  • the stop 31 of the timing lever 29 cooperates with the ratchet teeth 25 of the memory wheel 16 to ensure its non-return function.
  • the lug 36 of the pawl 37 is in contact with the end 34 of the timing lever 29.
  • the ramp 45 of this stop 24 bears on the tooth 33 of the lever 29 and makes the lever 29 pivot around its axis 30.
  • the stop 31 is then released from the toothing 25, the tooth 33 hooks against the rear face 28 of the stop 24, and the end 34 of the lever 29, releases the lug 36 of the pawl 37.
  • the rounded end 38 of the pawl 37 comes to bear against the profile of the solid crown 104 of the reversing cam 1 in rotation, before coming to lodge in its lumen 2 at the moment when it presents itself.
  • the number of timers can be large. It only depends on the number of levels of the profile of the timing cam 23.
  • the programmer of the invention is particularly well suited to modern washing machines, allowing optimization of washing cycles and therefore a multiplication of time delays.

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  • Transmission Devices (AREA)

Claims (8)

  1. Programmsteuergerät für eine Waschmaschine, umfassend einen Satz von Programmnocken (41), einen kontinuierlich angetriebenen Umschaltnocken (1), eine Schaltklinke (37), die zwischen einer Position des Antriebs des Nockensatzes (41) zu einer Drehbewegung um einen Schritt und einer eingeklappten Zeitverzögerungposition schwenkbar angebracht ist, wobei der Nockensatz (41) einen Zeitverzögerungnocken (23) beinhaltet, der mit einem Profil zur Auswahl einer Zeitverzögerung aus einer Reihe von Zeitverzögerungen versehen ist, und Mittel, vorgesehen, um die Verzögerungszeiten zu bestimmen und die Schaltklinke (37) in die Position des Antriebs des Nockensatzes (41) schwenken zu lassen, wobei diese Mittel einen Nachlaufhebel (21), welcher dem Profil des Zeitverzögerungnockens folgt, ein Speicher-Rad (16), ein Rad mit einem Stift (3), das bezüglich der Drehbewegung mit dem Umschaltnocken fest verbunden und dafür vorgesehen ist, das Speicher-Rad zur Drehung anzutreiben, und einen Zeitverzögerunghebel (29), vorgesehen, um mit dem Speicher-Rad (16) und der Schaltklinke (37) zum Antrieb des Nocken-Satzes zusammenzuwirken, umfassen, ein Programmsteuergerät, dadurch gekennzeichnet, daß es einen sektorförmigen Scheibenabschnitt (18) mit einer bestimmten Winkelbreite, der auf der Achse des Speicher-Rads (16) drehbar angebracht ist und einen Radius aufweist, der dem Außenradius des Rads (16) entspricht, und eine Schaltklinke (12) umfaßt, die eine Kippbewegung ausführt und dafür vorgesehen ist, das Speicher-Rad (16) anzutreiben, wobei der Arbeitshub der Schaltklinke (12) durch die Winkelposition des Scheibenabschnitts (18) begrenzt wird, wobei der Scheibenabschnitt (18) dazu dient, unter der Wirkung des Nachlaufhebels (21) die Winkelstrecke, über die das Speicher-Rad (16) durch das Rad mit dem Stift (3) bei jedem Umlauf des Umschaltnockens (1) angetrieben wird, zu verändern.
  2. Programmsteuergerät nach Anspruch 1, bei dem der Scheibenabschnitt (18) eine Aussparung (19) aufweist, die einen mit dem Nachlaufhebel (21) festverbundenen Zapfen (20) aufnimmt, wobei die Winkelposition des Nachlaufhebels (21) die Winkelposition des Scheibenabschnitts (18) bestimmt.
  3. Programmsteuergerät nach einem der Ansprüche 1 und 2, bei dem der Zeitverzögerunghebel (29) schwenkbar angebracht ist und mit einer Klinkwerk-Verzahnung (25) des Speicher-Rads (16) zusammenwirken kann, um eine Rückdrehsicherungsfunktion zu gewährleisten, sowie mit der Antriebsschaltklinke (37), um sie in der eingeklappten Zeitverzögerungsposition zu halten.
  4. Programmsteuergerät nach Anspruch 3, bei dem das Speicher-Rad (16) Mittel (24) umfaßt, um den Zeitverzögerunghebel (29) schwenken zu lassen und ihn aus seiner Rückdrehsicherungsfunktion zu entlassen und um die Antriebsschaltklinke (37) freizugeben und sie in die Position des Antriebs des Nockensatzes (41) schwenken zu lassen.
  5. Programmsteuergerät nach einem der Ansprüche 1 bis 4, bei dem die Schaltklinke (37) zum Antrieb des Nockensatzes (41) eine exzentrische Bewegung ausführt.
  6. Programmsteuergerät nach Anspruch 5, bei dem der Umschaltnocken (1) einen kreisförmigen flachen Ring (104) enthält, in dem ein Fenster (2) zur Aufnahme der Antriebsschaltklinke (37) in der Antriebsposition vorgesehen ist.
  7. Programmsteuergerät nach einem der Ansprüche 1 bis 6, bei dem die Antriebsschaltklinke (37) dafür vorgesehen ist, mit dem Zeitverzögerunghebel (29) zusammenzuwirken, um in der Position des Antriebs des Nockensatzes (41) den Zeitverzögerunghebel (29) schwenken zu lassen und das Speicher-Rad (16) freizugeben, wobei elastische Rückstellmittel (27) die Nullrückstellung des Speicher-Rads (16) gewährleisten.
  8. Programmsteuergerät nach einem der Ansprüche 1 bis 7, bei dem die Schaltklinke (12) zum Antrieb des Speicher-Rads (16) durch einen Hebel (5) zu ihrer Kippbewegung angetrieben wird, welcher Hebel so angebracht ist, daß er unter der Wirkung der Drehbewegung des Rads mit dem Stift (3) kippt.
EP19880403325 1987-12-29 1988-12-26 Programmschalteinrichtung für Waschmaschinen Expired - Lifetime EP0323343B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8718273A FR2625232B1 (fr) 1987-12-29 1987-12-29 Programmateur de machine a laver
FR8718273 1987-12-29

Publications (2)

Publication Number Publication Date
EP0323343A1 EP0323343A1 (de) 1989-07-05
EP0323343B1 true EP0323343B1 (de) 1993-04-14

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ID=9358383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880403325 Expired - Lifetime EP0323343B1 (de) 1987-12-29 1988-12-26 Programmschalteinrichtung für Waschmaschinen

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EP (1) EP0323343B1 (de)
DE (1) DE3880293D1 (de)
FR (1) FR2625232B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009693A1 (en) * 1992-10-30 1994-05-11 Southcorp Manufacturing Pty Ltd A method and apparatus for controlling a dishwasher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040464C3 (de) * 1970-08-14 1980-05-14 Ako-Werke Gmbh & Co, 7988 Wangen Programmsteuergerät für Waschautomaten
FR2116904A5 (fr) * 1970-12-09 1972-07-21 Crouzet Sa Element temporisateur modulaire pour programmateur
DE2806258C2 (de) * 1978-02-15 1987-01-22 Eaton GmbH, 7778 Markdorf Programmschaltwerk für Waschmaschinen, Geschirrspülmaschinen od.dgl.
US4228690A (en) * 1979-08-06 1980-10-21 Emhart Industries, Inc. Drive and clutch for a timing mechanism
DE3326402A1 (de) * 1983-07-22 1985-01-31 Siemens AG, 1000 Berlin und 8000 München Programmschalteinrichtung

Also Published As

Publication number Publication date
FR2625232A1 (fr) 1989-06-30
FR2625232B1 (fr) 1991-12-06
EP0323343A1 (de) 1989-07-05
DE3880293D1 (de) 1993-05-19

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