EP0014640B1 - Programmateur à trois temporisations mécaniques - Google Patents

Programmateur à trois temporisations mécaniques Download PDF

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Publication number
EP0014640B1
EP0014640B1 EP80400150A EP80400150A EP0014640B1 EP 0014640 B1 EP0014640 B1 EP 0014640B1 EP 80400150 A EP80400150 A EP 80400150A EP 80400150 A EP80400150 A EP 80400150A EP 0014640 B1 EP0014640 B1 EP 0014640B1
Authority
EP
European Patent Office
Prior art keywords
lever
cam
wheel
timing
pawl
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
EP80400150A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0014640A1 (fr
Inventor
Jean-Jacques Passetchnick
Yves Granjon
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
Priority to AT80400150T priority Critical patent/ATE1036T1/de
Publication of EP0014640A1 publication Critical patent/EP0014640A1/fr
Application granted granted Critical
Publication of EP0014640B1 publication Critical patent/EP0014640B1/fr
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
    • H01H43/005—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 the actuation of contacts due to a part rotating at variable speed

Definitions

  • the present invention relates to a programmer in particular for an electrical household machine, comprising a motor, a block of program cams, a reversing cam driven in continuous rotation by the motor, a pawl for driving step by step the block of program cams at each rotation of the reversing cam, and timing means to prevent the pawl from driving the block of programmed cams for predetermined timings, comprising at least one time wheel which can be driven in rotation by the motor, against the action elastic return means, a first lever, a timing cam for the cam block capable of actuating the first lever so that it; opposes the action of the elastic return means of the time wheel, and a second lever, actuated by the first lever, for actuating the pawl and preventing it from driving the block of cams.
  • the pawl which is pivotally mounted, cooperates with a cam for driving the cam block to drive this cam in rotation on one step and by therefore the entire cam block.
  • the timing cam has an external profile with three levels and the first lever has an arm in contact with the profile of this timing cam.
  • one or the other of two predetermined time delays is selected, apart from what can be called the short time delay corresponding to one step.
  • the time wheel has an internal profile, provided with a toothing, an inclined cam surface and two stops, the angular distances of which are different from this cam surface.
  • the first lever has two other arms arranged so that these two stops, under the action of the elastic return means of the time wheel, come to bear respectively on them, depending on the level on which the first arm of the first lever is located.
  • the two timers correspond to the times taken by the motor to drive the time wheel in rotation from one or the other of the two stops to the cam surface, one of the two other arms of the first lever cooperating with the toothing of the time wheel to act as a non-return pawl and prevent it from being driven in the opposite direction by its elastic return means, to one or the other of its original countdown positions.
  • an arm which is still different from the first lever rotates the second lever which, in turn, rotates the pawl to release it from the drive cam.
  • the present invention aims to eliminate this drawback by preventing, at the outset, any shift in the origin of the countdown.
  • the present invention relates to a programmer of the type defined above, characterized in that the said timing means comprise a second time wheel which can, at the same time as the first wheel, be driven in rotation by the motor , against the action of elastic return means, that the said second lever is arranged to be able to oppose the action of the return means of the second wheel, that a stop is provided in the programmer against which the two time wheels can come to bear under the action of their respective return means, and the two wheels each have a cam surface intended to cooperate, one with the first lever, the other with the second lever, to release the pawl, the angular distance between the cam surface of the first wheel and the contact point between this wheel and the first lever being shorter than that between the cam surface of the second wheel and the contact point between c ette impeller and the second lever, and the release of the pawl by the first lever being effected by means of the second lever.
  • the said timing means comprise a second time wheel which can, at the same time as the first wheel, be driven in rotation by the motor
  • the two wheels times are coaxial, the first lever has a lumen and the second lever has a protruding finger perpendicular to the plane of this lever and extending into the lumen of the first lever.
  • the programmer for an electrical household appliance and in particular washing machines, shown in the drawing is arranged in a module frame 1, serving as a support for lugs, or connection terminals, 2.
  • the programmer comprises a synchronous motor 3, a first reduction gear train 20, with an output wheel 7, and a second reduction gear train 21. It further comprises a first block of cams, not shown, comprising at least a reversing cam provided with a light, and driven in continuous rotation by the last wheel of the gear train 21.
  • the programmer also comprises a second block, of cams, arranged to be driven in rotation step by step, around an axis 32.
  • This block of program cams comprises a drive cam 35 and a timing cam 12, having an external profile 12a at three levels.
  • the output wheel of the gear train 21 carries a pawl 4 pivotally mounted, against the action of elastic return means, around an eccentric pin on this output wheel.
  • the pawl 4 is arranged so that one of its ends 33 arranged in the form of a beak can, under the action of its return means, cooperate with a toothing 34 formed at the inner periphery of the drive cam 35 of the block of programs cams at each passage in front of the pawl 4 of the light of the inversion cam in continuous rotation, and thus drive this block of programs cams in rotation on one step.
  • the programmer comprises two coaxial time wheels 5 and 6 mounted free in rotation on a common axis 38. They each have an external peripheral toothing 36, 37 arranged to cooperate with the output wheel 7 of the gear train 20 and thus be driven simultaneously in rotation by this wheel 7, but against the action of respective springs 51 and 61.
  • the wheel 7 has, at its outer periphery, only one tooth, so that, and independently of the other elements of the programmer the invention which will be discussed below, the two wheels 5 and 6 would be driven in rotation by a notch, or a tooth, at each revolution of the wheel 7, for example in the direction of clockwise in FIG. 1, but in order to be immediately returned in the opposite direction to their initial position by the springs 51 and 61.
  • the initial position of the wheels 5 and 6 is defined by a common stop 1a, fixed, protruding from the frame 1 and a stop surface 5a, 6a formed at the outer periphery of the wheels 5, 6, respectively.
  • the wheel 5 has, at its outer periphery, a cam surface 5b, located at a determined angular distance from the stop surface 5a, in the clockwise direction in FIG. 1.
  • the wheel 6 has, at its inner periphery, a toothing 39 and a cam surface 6b, located at an angular distance also determined from the abutment surface 6a, in the clockwise direction.
  • the programmer of the invention finally comprises a first lever 8, pivotally mounted, clockwise, against the action of elastic return means, not shown, around an axis 10, and a second lever 9, pivotally mounted, anticlockwise, against the action of elastic return means, not shown, around an axis 40, the axes 10 and 40 being parallel to the other axes of the programmer.
  • the lever 8 comprises on the same side of the axis 10, a feeler 11 arranged to be in contact with the external profile 12a of the timing cam 12 and an arm 41, in which, at an elbow 42, is provided a light 8b, and whose end 8a, distant from the axis 10, has a shape of a spout arranged to be able to cooperate with the external toothing 36 of the time wheel 5 and thus act as a non-return pawl during the drive in rotation of this wheel 5, in the clockwise direction, by ia wheel 7.
  • the lever 8 has another arm joining the part of the arm 41 disposed around the axis 10 to the end 8a of the arm 41, to give the lever 8 a somewhat circular overall shape.
  • the lever 9 has two arms 43 and 44, arranged on either side of the axis 40.
  • the arm 44 carries a finger 9b, projecting perpendicularly to its plane, and extending in the lumen 8b of the lever 8.
  • the end 9a of the arm 43 has the shape of a beak arranged to be able to cooperate with the internal toothing 39 of the time wheel 6 and thus act as a non-return pawl when the wheel 6 is rotated, in the direction of clockwise, by the wheel 7.
  • the arm 44 carries, at its free end, and perpendicular to its plane, a V-shaped cam 45, the point of which is directed substantially towards the pivot axis 40.
  • the end of the pawl 4 opposite its end moth 33, carries a finger 46 arranged to cooperate with this cam 45 and more particularly with the faces of this cam 45 facing the axis 40, and on which it can slide.
  • the pawl 4 under the action of its return means , occupies a position in which its end 33 can cooperate with the toothing 34 of the drive cam 35, while when the finger 46 is in contact with the other branch 48 of the cam 45, the pawl 4 is pivoted in a position in which its end 33 cannot cooperate with the toothing 34 of the cam 35 to cause it to rotate in one step.
  • the peripheral external profile of the timing cam 12 having, in the example considered, three levels when the probe 11 is in contact with the level of greatest radius of the profile of the cam 12, that is to say that the lever 8 is pivoted in its extreme angular position in a clockwise direction, neither the spout 8a of the lever 8, nor the spout 9a of the lever 9 cooperate with the external 36 and internal 39 teeth of the wheels 5 and 6, respectively, so that these wheels 5 and 6 are slightly driven by the wheel 7, at each of its rotations, to be immediately after recalled by the springs 51 and 61, in their initial position, in abutment against the projection 1 a.
  • the lever 8 being pivoted, against its return means, in its extreme angular position in a clockwise direction, the lever 9 is pivoted, following the driving of its finger 9b by the light 8b, of the lever 8, and against its return means, in its extreme angular position anticlockwise.
  • the finger 46 of the pawl 4 is in contact with the branch 47 of the cam 45 of the arm 44 of the lever 9, and the pawl 4 occupies a position, on the output wheel of the gear train 21, in which its end 33 can act on the teeth 34 of the drive cam 35 to cause the latter to rotate in one step, each time the lumen of the reversing cam passes. In this case, it is a short time delay, with which is therefore associated the upper level of the profile 12a of the time delay cam 12.
  • the lever 8 When the probe 11 is in contact with the level of intermediate radius of the profile 12a of the cam 12, the lever 8 is pivoted counterclockwise, but not enough so that its beak 8a can cooperate with the teeth 36 of the wheel 5.
  • the levers 8 and 9 are arranged so that, in this case, the lever 9 pivots clockwise, under the action of its return means, and that, consequently, the finger 46 of the pawl 4 passes under the branch 48 of the cam 45 of lever 9 and that the pawl 4 can no longer rotate the drive cam 35, and that the spout 9a of the lever 9 can cooperate with the internal toothing 39 of the wheel 6 and thus act as a non-return pawl.
  • the wheel 5 always returns to bear on the projection 1a of the frame 1, while the wheel 6 turns by a tooth at each rotation of the wheel 7.
  • the lever 9 is pivoted anti-clockwise, the finger 46 of the pawl 4 goes back under the branch 47 of the cam 45 so that the pawl 4 switches back to the driving position of the cam 35 , and the wheel 6 is returned by its spring 61 in abutment against the projection 1a.
  • it is a long time delay, corresponding to the time taken by the wheel 6 to turn the angular distance separating the initial point of contact of the nozzle 9a with its teeth 39, from the cam surface. 6b, and with which is therefore associated the intermediate level of the profile 12a of the timing cam 12.
  • the levers 8 and 9 are pivoted by their respective springs so that the nozzles 8a and 9a cooperate respectively with the teeth 36 and 39 of the wheels times 5 and 6, the finger 46 of the pawl 4 being passed under the branch 48 of the cam 45, thus preventing the end 33 of the pawl from driving the cam 35 in rotation.
  • the wheels 5 and 6 rotate simultaneously, each, of a tooth at each rotation of the wheel 7.
  • the programmer described above and shown in the drawing is particularly suitable for household electrical machines, and in particular washing machines, with program selection by manual display.

Landscapes

  • Ultra Sonic Daignosis Equipment (AREA)
  • Electrotherapy Devices (AREA)
  • Food-Manufacturing Devices (AREA)
  • Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
EP80400150A 1979-02-12 1980-01-31 Programmateur à trois temporisations mécaniques Expired EP0014640B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80400150T ATE1036T1 (de) 1979-02-12 1980-01-31 Programmiergeraet mit drei mechanischen zeitverzoegerungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7903685A FR2448593A1 (fr) 1979-02-12 1979-02-12 Programmateur a trois temporisations mecaniques
FR7903685 1979-02-12

Publications (2)

Publication Number Publication Date
EP0014640A1 EP0014640A1 (fr) 1980-08-20
EP0014640B1 true EP0014640B1 (fr) 1982-05-12

Family

ID=9221934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400150A Expired EP0014640B1 (fr) 1979-02-12 1980-01-31 Programmateur à trois temporisations mécaniques

Country Status (7)

Country Link
EP (1) EP0014640B1 (enrdf_load_stackoverflow)
AT (1) ATE1036T1 (enrdf_load_stackoverflow)
DE (1) DE3060386D1 (enrdf_load_stackoverflow)
ES (1) ES488438A1 (enrdf_load_stackoverflow)
FI (1) FI67276C (enrdf_load_stackoverflow)
FR (1) FR2448593A1 (enrdf_load_stackoverflow)
NO (1) NO150336C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630557B1 (fr) * 1988-04-25 1992-02-14 Crouzet Sa Programmateur pour machines electrodomestiques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1258062A (fr) * 1960-05-27 1961-04-07 Heliowatt Werke Elek Zitats Ag Interrupteur horaire pour la fermeture et la réouverture automatiques de circuits électriques
FR2082486A5 (enrdf_load_stackoverflow) * 1970-03-16 1971-12-10 Crouzet & Cie
US3997742A (en) * 1975-03-14 1976-12-14 Robertshaw Controls Company Automatic timer switch

Also Published As

Publication number Publication date
DE3060386D1 (en) 1982-07-01
FI67276C (fi) 1985-02-11
ES488438A1 (es) 1980-10-01
NO800348L (no) 1980-08-13
ATE1036T1 (de) 1982-05-15
EP0014640A1 (fr) 1980-08-20
FR2448593A1 (fr) 1980-09-05
NO150336C (no) 1984-09-26
FI67276B (fi) 1984-10-31
NO150336B (no) 1984-06-18
FR2448593B1 (enrdf_load_stackoverflow) 1982-02-19
FI800409A7 (fi) 1980-08-13

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