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EP0033051B1 - Programmschalter mit Zeitverzögerungsnocken für Waschautomat - Google Patents

Programmschalter mit Zeitverzögerungsnocken für Waschautomat Download PDF

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Publication number
EP0033051B1
EP0033051B1 EP80401889A EP80401889A EP0033051B1 EP 0033051 B1 EP0033051 B1 EP 0033051B1 EP 80401889 A EP80401889 A EP 80401889A EP 80401889 A EP80401889 A EP 80401889A EP 0033051 B1 EP0033051 B1 EP 0033051B1
Authority
EP
European Patent Office
Prior art keywords
cam
timing
profile
programmer
blade
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
Application number
EP80401889A
Other languages
English (en)
French (fr)
Other versions
EP0033051A1 (de
Inventor
Pierre Gasquet
Jean-Jacques Passetchnik
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.)
Thales Avionics SAS
Original Assignee
Crouzet SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crouzet SA filed Critical Crouzet SA
Publication of EP0033051A1 publication Critical patent/EP0033051A1/de
Application granted granted Critical
Publication of EP0033051B1 publication Critical patent/EP0033051B1/de
Expired 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
    • H01H43/02—Details
    • H01H43/04—Means for time setting

Definitions

  • the present invention relates to a programmer for an automatic washing machine, comprising a block of rotary program cams intended to cooperate with blade contacts to exercise, respectively, specific functions, means for driving the block of cams in rotation, and at least a timing cam associated with one of the blade contacts and the associated program cam of the cam block, the timing cam being arranged to be rotated and so that a low profile of said associated program cam cannot cooperate with said contact only after the timing cam has rotated by a determined angle.
  • Such a programmer is described in particular in FR-A-1 548 677 in the name of the applicant.
  • this programmer is the program cam of the cam block associated with the timing cam which is arranged to rotate the timing cam by the angle necessary for the timing to stop.
  • the timing cam is driven by its associated program cam of the cam block, that is to say, in the example mentioned above, the program cam controlling the spin functions, and therefore by the programmer, it suffices to manually drive the programmer for a few sufficient turns to rotate the timing cam, so that the machine door can be opened anyway.
  • the manual rotation of the programmer can be done in a very short time, it is obvious that the door can be opened before the drum is completely stopped.
  • the present invention therefore aims to offer, in particular, total door security, with which the time delay is only triggered at the end of the manual rotation of the programmer, for example.
  • the present invention converges a programmer of the type defined above, characterized in that the timing cam is mounted on the hub of the cam block, that it is arranged to be driven, against the action of elastic return means, by the drive means of the cam block, and that it has a high radius profile greater than a high profile of the said associated program cam, an intermediate radius delay profile lower than the high profile the associated program cam, and a low radius profile such that it allows the timing to stop and the blade of said associated contact to come into contact on the low profile of the associated program cam.
  • the arrangement of the programmer of the invention in which, in particular, the radius of the timing profile of the timing cam is less than the radius of the high profile of the associated program cam, as long as the programmer is rotated , the high profile of the program cam, at each rotation, is interposed between the timing profile of the timing cam and the blade of the associated contact, for, and under the action of the elastic return means of the cam delay, prevent the delay from continuing and the cooperation between the low profile of the program cam and the blade of the associated contact from being established.
  • the blade of said associated contact carries a spout arranged to cooperate with the timing profile and the stop, formed between this timing profile and the high profile, of the timing cam.
  • the timing cam has the shape of a crescent fixed, by its end opposite to that carrying the high profile, to the elastic return means.
  • the timing cam and the associated program cam are arranged to be driven in rotation, respectively, in opposite directions.
  • the programmer shown in the figure comprises, in a housing 6, a block of program cams, only one of which is shown, for example the spin program cam 5a.
  • This block is rotatably mounted on a hub 5, to be driven step by step, in the direction of the arrow F5, opposite to that of the needles of a watch in the figure, by a drive motor 20, synchronous, by through a speed reduction box, the output pinion of which actuates a pawl cooperating with a toothing formed on one of the cams of the cam block.
  • a drive motor 20 synchronous, by through a speed reduction box, the output pinion of which actuates a pawl cooperating with a toothing formed on one of the cams of the cam block.
  • each of the program cams is intended to cooperate with blade contacts to exercise specific functions.
  • the wiping program cam 5a is intended to cooperate with a blade 4 of a contact 7, 8, 9, to establish an electrical connection, either between the lugs 7 and 8, or between the lugs 7 and 9, according to that the cooperation takes place, either with a high or intermediate profile of the cam 5a, or with a low profile of this cam.
  • the blade 4 carries a contact, or cooperation, spout 4a.
  • the terminal 7 is connected to a power supply and the terminal 8 is connected to the motor 20 driving the programmer.
  • the terminal 9 it is connected to the coil 21 of an electromagnet, for example for locking the door of an automatic washing machine, on which the programmer is mounted.
  • the electromagnet 21 is not energized and locks the door of the machine. To open this door, the electromagnet must be energized, by connecting the lugs 7 and 9, on the one hand, and by pressing manually on a push button 22, on the other hand. When the button 22 is released, the machine door is opened and the electromagnet 21 is again de-energized.
  • the time delay cam will prevent such a danger.
  • the wiping cam 5a has a certain number of profiles, including a high profile 51 and a low profile 53. Let us assume that the blade 4 is mounted and that its elasticity is such that the reversal of the contact 7-9 occurs only 'to the cooperation of the spout 4a of the blade 4 and the low profile 53 of the cam 5a. It is therefore a question of obtaining that the inversion of the contact 7-9 only intervenes for a certain time after the low profile 53 has appeared under the spout 4a, it being understood that, as soon as the low profile 53 present under the spout 4a, the power to the drum drive motor is cut, but this motor not yet stopped, due to its inertia.
  • a timing cam 1 is therefore provided, attached to the program cam 5a, and on which the spout 4a of the blade 4 will bear at the same time as on the program cam 5a.
  • This timing cam has the shape of a crescent extending over more than 200 °, although this is not a limiting condition of the invention.
  • This cam 1 is mounted by elastic clamping on the hub 5 of the cam block, to be first free on this hub and then fixed, by an end 1a, opposite that 1b which is, at rest, under the spout 4a of blade 4, to a spring 3 tending to return cam 1 in the direction of arrow F5.
  • This spring fixed at one of its ends to the cam 1, is fixed, at its other end 3a and by a hole 6a, to the housing 6.
  • a hole is drilled at the end 1b of the cam 1 to fix it the end 3a of the spring 3 during the handling operations preceding the mounting of the cam 1.
  • the cam 1 is arranged to be driven, step by step, against the action of the spring 3, by the motor 20 driving the programmer, but in the direction of the arrow F1, it that is to say in the direction of clockwise, or in the opposite direction to that of the drive of the program cam block.
  • This arrangement is useful so that, during the rotation of the cam block, in the direction of arrow F5, the hub 5, by friction, tends to drive. the timing cam in the same direction as its return spring 3, and that it thus remains or quickly returns to abutment until the actual start of the timing.
  • the timing cam 1 has a high profile 11, at its end 1 b, with a radius greater than that of the high profile 51 of the program cam 5a, an intermediate timing profile 12, adjacent to and forming with the high profile 11 a stop shoulder 15, with a radius smaller than that of the high profile 51 of the cam 5a, and a low profile 14, adjacent to the profile 12, of radius substantially equal to that of the low profile 53 of the cam 5a, the profiles 11, 12 and 14 extending successively in the direction of arrow F5 at the periphery of the cam 1.
  • the radius of the low profile. 14 essentially depends on the stroke and the elasticity of the blade 4, just as moreover, the radius of the low profile 53 of the cam 5a.
  • the time delay profile 12 is a wolf tooth profile comprising n teeth 1c arranged to cooperate with the spout 4a of the blade 4, just like the shoulder 15.
  • the timing cam 1 has a profile. to: (n + 1) teeth 1d, arranged to cooperate with a single wheel tooth 2, driven in rotation in the direction of arrow F2, opposite to that of arrow F1, by the reduction gear mentioned above. At rest, the timing cam is in abutment against the spout 4a of the blade 4, by its shoulder 15.
  • the programmer works as follows. When, by manual action, the programmer has been driven so that its low profile 53 is under the spout 4a of the blade 4, the drum drive motor is stopped, but the drum continues to rotate and the contact between the lugs 7, remains established, that is to say that the motor 20 remains connected to continue the drive of the programmer.
  • the rotation of the cam block, under the action of the motor 20, being much slower than the rotation of the timing cam 1 under the action of this motor and of the wheel 2, we can admit, as a first approximation , that during the rotation of the cam 1, the cam 5a remains practically immobile.
  • the wheel 2 drives the cam 1 in the direction of the arrow F1, the cam 1 coming to bear on the spout 4a at the end of each step, by one of its teeth 1c.
  • the spout 4a plays the role of a non-return pawl, a return which would otherwise be caused by the spring 3.
  • the timing cam 1 has turned by the angle between the shoulder 15 and the low profile 14, perfectly determined angle, the spout 4a of the blade 4 can fall on the low profile 53 of the program cam 5a, and reverse the contact 7-9, to cut the connection 7-8 and establish the connection 7-9 between the supply and the coil 21 of the electromagnet. At this time, the drum is necessarily stopped and the door can be opened without risk.
  • the cam 1 is always stopped in its rotation in the direction of the arrow F5 by its shoulder 15 which abuts against the spout 4a of the blade 4.
  • the wheel 2 certainly starts to drive the cam 1 in the direction of the arrow F1, but at each revolution of the cam block, the high profile 51 of the cam 5a is interposed between the intermediate profile 12 of the cam 1 and the spout 4a to cause the return of the cam 1, that is to say the return of the shoulder 15 on the spout 4a, in other words again, causing a false start of the time delay and preventing the reversal of the contact 7 - 9.
  • the programmer of the invention may include a timing cam associated with any program cam, or even several timing cams associated, respectively, with several program cams.

Landscapes

  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (4)

1. Programmschalter für automatische Waschmaschinen mit einem Block von drehbar gelagerten Programm-Nocken, die mit zungenbetätigten Kontakten (7, 8, 9) zusammenwirken, um jeweils verschiedene Funktionen auszuüben, mit einem Element (20) für den Rotationsantrieb des Nockenblocks, und mit mindestens einem Zeitverzögerungs-Nocken (1), die einem der zungenbetätigten Kontakte (7, 8, 9) und dem zugeordnetem Programm-Nocken (5a) des Nockenblocks zugeordnet ist, wobei der Zeitverzögerungs-Nocken so gestaltet ist, daß er zu einer Rotationsbewegung antreibbar ist, und daß ein niedriger Profilabschnitt (53) des zugeordnetem Programm-Nocken (5a) mit dem entsprechenden Kontakt nur dann zusammenarbeiten kann, nachdem der Zeitverzögerungs-Nocken (1) sich um einen bestimmten Winkel gedreht hat, dadurch gekennzeichnet, daß der Zeitverzögerungs-Nocken (1) auf der Nabe (5) des Nockenblocks gelagert ist und gegen die Wirkung eines elastischen Rückstellelementes (3) vom Antriebselement (20) des Nockenblocks antreibbar ist, und daß der Zeitverzögerungs-Nocken einen hohen Profilabschnitt (11), dessen Radius größer ist als der eines hohen Profilabschnitts (51) des zugeordneten Programm-Nocken (5a), einen mittleren Verzögerungs-Profilabschnitt (12), dessen Radius kleiner ist als der des hohen Profilabschnittes (51) des zugeordneten Programm-Nocken (5a), und einen niedrigen Profilabschnitt (14) mit einem solchen Radius aufweist, daß dieser die Verzögerung aufhebt und die Zunge (4) des zugeordneten Kontaktes in Kontakt mit dem niedrigen Profilabschnitt (53) des zugeordneten Programm-Nocken (5a) in Kontakt kommen läßt.
2. Programmschalter nach Anspruch 1, dadurch gekennzeichnet, daß die Zunge (4) des zugeordneten Kontaktes eine Schneide (4a) trägt, die mit dem Verzögerungs-Profilabschnitt (12) und dem Anschlag (15), der zwischen dem Verzögerungs-Profilabschnitt (12) und dem hohen Profilabschnitt (11) des Zeitverzögerungs-Nocken (1) liegt, zusammenzuarbeiten vermag.
3. Programmschalter nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Zeitverzögerungs-Nocken (1) die 7:orm einer Sichel hat, an deren einem Ende (1b) sich der hohe Profilabschnitt (11) befindet, während das andere Ende (1a) der Sichel an dem elastischen Rückstellelement (3) befestigt ist.
4. Programmschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Zeitverzögerungs-Nocken (1) und der zugeordnete Programm-Nocken (5a) in entgegengesetzten Drehrichtungen antreibbar sind.
EP80401889A 1980-01-28 1980-12-30 Programmschalter mit Zeitverzögerungsnocken für Waschautomat Expired EP0033051B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8001819 1980-01-28
FR8001819A FR2474758A1 (fr) 1980-01-28 1980-01-28 Programmateur a contact retarde

Publications (2)

Publication Number Publication Date
EP0033051A1 EP0033051A1 (de) 1981-08-05
EP0033051B1 true EP0033051B1 (de) 1983-03-23

Family

ID=9237961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401889A Expired EP0033051B1 (de) 1980-01-28 1980-12-30 Programmschalter mit Zeitverzögerungsnocken für Waschautomat

Country Status (4)

Country Link
EP (1) EP0033051B1 (de)
DE (1) DE3062472D1 (de)
ES (1) ES8200792A1 (de)
FR (1) FR2474758A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1548677A (de) * 1967-10-27 1968-12-06
FR2188275A1 (de) * 1972-06-09 1974-01-18 Crouzet Sa
FR2195807A2 (de) * 1972-08-07 1974-03-08 Mallory Timers Continent
FR2241108A1 (de) * 1973-08-13 1975-03-14 Copreci Ind Sci

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446008A1 (fr) * 1979-01-08 1980-08-01 Crouzet Sa Dispositif de pas a pas pour programmateur electrodomestique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1548677A (de) * 1967-10-27 1968-12-06
FR2188275A1 (de) * 1972-06-09 1974-01-18 Crouzet Sa
FR2195807A2 (de) * 1972-08-07 1974-03-08 Mallory Timers Continent
FR2241108A1 (de) * 1973-08-13 1975-03-14 Copreci Ind Sci

Also Published As

Publication number Publication date
FR2474758B1 (de) 1982-07-30
ES499482A0 (es) 1981-12-01
ES8200792A1 (es) 1981-12-01
EP0033051A1 (de) 1981-08-05
DE3062472D1 (en) 1983-04-28
FR2474758A1 (fr) 1981-07-31

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