EP0459851B1 - Elektromechanisches Programmschaltwerk mit leichter Programmvorwahl - Google Patents

Elektromechanisches Programmschaltwerk mit leichter Programmvorwahl Download PDF

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Publication number
EP0459851B1
EP0459851B1 EP91401213A EP91401213A EP0459851B1 EP 0459851 B1 EP0459851 B1 EP 0459851B1 EP 91401213 A EP91401213 A EP 91401213A EP 91401213 A EP91401213 A EP 91401213A EP 0459851 B1 EP0459851 B1 EP 0459851B1
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EP
European Patent Office
Prior art keywords
cam
preselection
program
cam follower
main
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
EP91401213A
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English (en)
French (fr)
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EP0459851A1 (de
Inventor
Michel Bouron
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Esswein SA
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Esswein SA
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Anticipated expiration legal-status Critical
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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
    • H01H43/106—Manual programme selecting means

Definitions

  • the present invention relates to an electromechanical programmer with gentle program preselection.
  • Apparatuses such as washing machines and dishwashers usually include programmers which ensure the flow of the operations to be executed by these apparatuses, provided in preset operating programs. Programmers with gentle program preselection allow the users of these washing machines or dishwashers to choose one of these operating programs when switching on these appliances.
  • Known electromechanical programmers for gentle program preselection often include two micromotors, the first of which drives step by step, during a normal course of an operating program, by means of a reduction gear or speed reduction system driving a cam step authorization and a step actuation lever, a main cam block which actuates switches or electrical contacts for supplying electrical power to the various electrical components of the devices on which these programmers are mounted, and the second involves this main cam block through a reduction gear or speed reduction system in a gentle preselection of a program where the switches or electrical contacts associated with this main cam block are previously de-energized.
  • Rotating the main cam block of these programmers without gentle preselection often requires a relatively large manual effort which could be burdensome for users. For this reason, in these programmers, the second micromotor drives this main cam block in place of the users and the preselection of a program becomes gentle for the latter.
  • the second micromotor is replaced by a gear clutch system controlled by an electromagnet which is associated with the speed reduction system of the first micromotor, to drive the main cam block in a gentle preselection of a program.
  • Such structures are particularly expensive since they require either the use of two micromotors and two reducers or speed reduction systems in the same programmer, or the use of a micromotor of a speed reduction system and a clutch system with gears and controlled by an electromagnet in the same programmer.
  • the present invention aimed at avoiding these drawbacks allows for an economical electromechanical programmer with gentle program preselection.
  • an electromechanical programmer with gentle program preselection having a rotary main cam block executing several operating programs, a step passage authorization cam associated with this main cam block and driven in rotation by a micromotor with through a speed reduction system, and a gentle program preselection cam is characterized in that it comprises a disengageable mechanical drive device ensuring a mechanical connection between the rotary main cam block and the passage authorization cam step, by means of a soft program preset cam control.
  • An electromechanical programmer with gentle program preselection 1 illustrated in FIG. 1, comprises a chassis 2, a rotary main cam block 3 executing several operating programs, a cam 4 for authorizing passage to pass to this main cam block 3 , mounted coaxially at a first end of this main cam block and rotated about a fixed axis 7 by a micromotor 5 through a reduction gear or speed reduction system 6 shown in broken lines, a gentle preselection cam of program 10 mounted in the vicinity of the second end of this main cam block 3, coaxial with the latter, movable in rotation and adjustable in angular position by means of a rotary axis of manual control 11.
  • the programmer 1 comprises a disengageable mechanical drive device ensuring a mechanical connection between the rotary main cam block 3 and the step passage authorization cam 4, under control of the soft preselection cam of program 10.
  • the mechanical disengageable drive device comprises on the one hand a program preselection cam 14 associated with the soft program preselection cam 10, and on the other hand, retractable means for mechanical connection between the cam follower of program preselection 14 and the step passage authorization cam 4 and sliding means for mechanical connection between the program preselection counter cam 14 and the main cam block 3.
  • the micromotor 5 drives the main cam block 3 along two mechanical channels or chains.
  • the first mechanical chain includes the reduction gear or speed reduction system 6, the pitch passage authorization cam 4, a disengageable eccentric lever for pitch actuation 24 and a positioning lever 23 mounted at a first end of this main cam block 3, and the second mechanical chain comprises the speed reducer 6 and the step passage authorization cam 4 which are common to the first and second mechanical chains and the disengageable mechanical drive device which comprises on the one hand the cam follower of program preselection 14 mounted between the program preselection cam 10 and the second end of the main cam block 3, sliding axially in this main cam block 3 and the retractable means 44 to 51 for mechanical connection between the authorization authorization cam passage of step 4 and the program preselection cam 14 and the sliding means 30, 31 for mechanical connection between the main cam block 3 and the cam follower of program preselection 14.
  • the micromotor 5 drives the main cam block 3 by this first mechanical chain during a normal running of an operating program and by this second mechanical chain in a gentle preselection of an operating program.
  • the main rotary cam block 3 controls by its cams 18 the fixed electrical switches or contacts which form fixed networks of contacts 20, 21 shown in broken lines and supply electric current to the micromotor 5 of the programmer 1 and the various electrical organs of a household appliance not shown such as a washing machine, dishwasher on which is mounted this programmer 1.
  • the rotational movement of the main cam block 3 depends both on a positioning lever 23 which keeps the latter in position and an eccentric step actuation lever 24 which is controlled by the step passage authorization cam 4 and advances this main cam block 3.
  • the positioning lever 23 and the lever eccentric of actuation of pitch 24 are levers of known types.
  • the main cam block 3 advances by one step when the step passage authorization cam 4 acts on the eccentric step actuation lever 24 which pushes the cam block 3.
  • the soft program preselection cam 10 rotated manually by means of the axis 11 comprises in its axial active surface two axial bosses 28 which are intended to trigger the beginning of the course of the preselected operating program.
  • the program preselection cam 14 movable axially inside the main cam block 3 carries at its periphery spaced apart longitudinal ribs 30 which slide in corresponding longitudinal grooves 31 formed in the internal walls of the main cam block 3.
  • the spaced longitudinal ribs 30 of the preselection cam 14 and the longitudinal grooves 31 of the main cam block 3 constitute sliding means of mechanical connection which allow the preselection cam 14 to be sliding inside the main cam block 3 and integral in rotation with the latter.
  • the main cam block 3 carries spaced apart longitudinal ribs and the preselection cam follower 14 is provided with corresponding longitudinal grooves.
  • the program preselection cam 14 further comprises in its end adjacent to the soft program cam 10 recesses 33 which serve as housings for the axial bosses 28 of the soft program cam 10 and in its periphery of its end a lateral flange 35 intended to control, through an actuating lever 36, an electrical contact 37 supplying the micromotor 5.
  • the program preselection cam 14 is provided with an axial hole in its center, intended to receive the axis of rotation 7 and the return spring 16, and symmetrically and parallel to its longitudinal axis, of two longitudinal receiving and guide holes 44, 45 the ends of which have diameters larger than those of the central parts and two longitudinal retractable locking rods 46 and 47 slidably mounted in the longitudinal guide holes 44 and 45 and constantly returned elastically projecting outwards in the direction of the passage passage authorization cam 4 by springs 48, 49, and the step passage authorization cam 4 comprises two longitudinal receiving holes 50, 51 which are respectively aligned with the locking rods 46, 47 when the programmer 1 is in its state or rest position illustrated in FIG. 1 and intended to receive the projecting ends of these locking rods 46, 47.
  • the ends with enlarged diameters of the longitudinal guide holes 44, 45 of the program preselection cam 14 serve both to accommodate the return springs 48, 49 and the heads of the locking rods 46, 47 and to facilitate their movement.
  • the programmer 1 being in its state or rest position shown in FIG. 1, during a gentle preselection of a program, the preselection cam 10 is rotated with the help of the operating shaft 11 until a predetermined position indicated in a not shown adjustment dial corresponding to this program.
  • the axial bosses 28 disengage from their housings 33 by pushing and moving the preselection counter cam 14 away and slide on the end surface of the latter while this preselection cam cam 14 moves axially inside the main cam block 3, the projecting ends of its longitudinal locking rods 46, 47 carried by this cam cam preselection 14 are introduced into the receiving holes 50, 51 of the passage passage authorization cam 4 and establish a mechanical connection which makes this preselection counter cam 14 and this passage passage authorization cam integral in rotation step 4, and at the end of the travel movement of this preselection cam follower 14, its lateral flange 35 pushes the actuating lever 36 which switches the electrical contact 37 (FIGS. 1 and 2) triggers the electrical supply of the micromotor 5 and deactivates the electrical contact networks 20 and 21 controlled
  • the micromotor 5 then rotates the step passage authorization cam 4 via the reduction gear or speed reduction system 6.
  • the step passage authorization cam 4 actuates the eccentric lever of passage of step 24 then keeps it disengaged from the main cam block 3 and thus disengages the first mechanical chain.
  • step passage authorization cam 4 continues and this cam 4 rotates this main cam block 3 by the second mechanical chain through the preselection counter cam 14 thanks to the mechanical connections between the cam authorization to pass step 4 and the program preselection cam 14 by the locking rods 46, 47 and between the preselection cam 14 and the main cam block 3 by longitudinal ribs 30 and longitudinal grooves 31
  • the micromotor 5 thus rotates the preselection cam follower 14 and the main cam block 3 until the recesses or housings 33 of the program preselection cam follower 14 are again presented in front of the bosses 28. of the soft program preselection cam 10.
  • the main cam block 3 is rotated by a predetermined angle in order to present at the start the start of the chosen program.
  • the micromotor 5 rotates the main cam block 3 by the first mechanical chain which includes the speed reducer 6, the step passage authorization cam 4, the positioning lever 23, the second mechanical chain being disengaged.
  • the cam soft preselection of program 10 is turned by means of the operating axis 11 to a predetermined position corresponding to this program.
  • this soft program preselection cam 10 During the rotation of this soft program preselection cam 10, the axial bosses 28 disengage from their housings 33 and slide on the end surface of this preset cam 14 while preset 14 moves axially inside the main cam block 3, the protruding ends of the locking rods 46, 47 abut against the surface of the authorization cam passing step 4, retract or partially retract these locking rods in the guide holes 44, 45 and compress their return springs 48, 49 since the receiving holes 50, 51 are not at this time aligned with these locking rods, and the lateral flange 35 comes at the end of the travel movement of the preselection cam follower 14 pushing the actuating lever 36 which switches the contact 37 (FIG. 3) triggers the electric supply of the micromotor 5 and de-energizes the electrical contact networks 20, 21 controlled by the cams 18 of the main cam block 3.
  • the micromotor 5 rotates and rotates the step passage authorization cam 4 via the reduction gear or speed reduction system 6.
  • the step passage authorization cam 4 actuates the eccentric lever actuating step 24 then keeps it disengaged from the main cam block 3 and thus disengages the first mechanical chain.
  • the step passage authorization cam 4 continues to rotate, which allows the projecting ends of the locking rods 46, 47 to slide on its surface. As soon as the receiving holes 50, 51 appear in front of these ends, the locking rods 46, 47 penetrate therein under the thrust of their return springs 48, 49 and establish a mechanical connection which makes the counter cam of rotation integral preselection 14 and the step passage authorization cam 4, as illustrated in FIG. 2.
  • the micromotor 5 which continues to rotate then drives the main cam block 3 in rotation by the second mechanical chain 41 which includes the speed reducer 6, the step passage authorization cam 4, the locking rods 46, 47 and the program preselection cam 14, until the housings 33 of the preselection cam 14 face the bosses 28 of the soft program preselection cam 10. Under the pressure of the return spring 16, these bosses 28 return to their housings 33, the preselection cam 14 is applied against the soft program preselection cam 10, and at the same time the locking rods 46, 47 are withdrawn from the holes of reception 50, 51 and the lateral edge 35 releases the actuating lever 36, lets the contact 37 reverse and triggers a cut in the supply of electricity to the micromotor through this contact 37.
  • the preselection of a program ends and the normal program sequence begins.
  • the micromotor 5 is then powered by electrical contacts of the networks 20 and 21 of the programmer 1 and drives the main cam block 3 in rotation by the first mechanical chain 40 already described in one of the preceding paragraphs.
  • the programmer comprises as retractable means of mechanical connection between the cam for authorizing passage of pitch 4 and the program preselection counter cam 14 on the one hand a single retractable longitudinal locking rod 46 or 47, guided by a single longitudinal receiving hole 44 or 45 carried by the program preselection cam 14 and constantly spring-loaded outwardly projecting from this cam 14 in the direction of the authorization cam passage passage 4 by a spring 48 or 49 and secondly a single longitudinal receiving hole 50 or 51 formed in the passage passage authorization cam 4 and intended to receive the projecting end of this rod lock 46 or 47.
  • the electromechanical programmer with soft preselection of program 1 described above thus has a particularly simple structure and can completely accomplish its work with the help of a single couple "drive micromotor 5-speed reducer". This simplicity of structure and operation makes it particularly economical without compromising its efficiency and reliability.

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  • Transmission Devices (AREA)
  • Sewing Machines And Sewing (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Control Of Position Or Direction (AREA)

Claims (8)

  1. Elektromechanische Programmsteuerung mit sanfter Programmvorwahl und mit einem drehbaren Hauptnockenblock (3), der mehrere Betriebsprogramme ablaufen läßt, mit einer Schrittschaltnocke (4), die diesem Hauptnockenblock (3) zugeordnet ist und von einem Mikromotor (5) über ein Geschwindigkeitsreduziersystem (6) in Drehung versetzt wird, und mit einer Nocke (10) zur sanften Programmvorwahl, dadurch gekennzeichnet, daß sie eine entkoppelbare mechanische Antriebsvorrichtung enthält, die eine mechanische Verbindung zwischen dem drehbaren Hauptnockenblock (3) und der Schrittschaltnocke (4) über eine Steuerung der Nocke (10) zur sanften Programmvorwahl gewährleistet.
  2. Programmsteuerung nach Anspruch 1, dadurch gekennzeichnet, daß die entkoppelbare mechanische Antriebsvorrichtung einerseits eine Programmvorwahl-Gegennocke (14), die der Nocke (10) zur sanften Programmvorwahl zugeordnet ist, und andererseits zurückziehbare mechanische Verbindungsmittel (46, 47, 44, 45, 50, 51) zwischen der Programmvorwahl-Gegennocke (14) und der Schrittschaltnocke (4) sowie gleitende mechanische Verbindungsmittel (30, 31) zwischen der Programmvorwahl-Gegennocke (14) und dem Hauptnockenblock (3) enthält.
  3. Programmsteuerung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der Mikromotor (5) den Hauptnockenblock (3) gemäß zwei mechanischen Ketten antreibt, von denen die erste das Geschwindigkeitsreduziersystem (6), die Schrittschaltnocke (4), einen exzentrischen entkoppelbaren Schrittschalthebel (24) und einen Positionierhebel (23) enthält, die an einem ersten Ende des Hauptnockenblocks (3) montiert sind, während die zweite Kette das Geschwindigkeitsreduziersystem (6) und die Schrittschaltnocke (4), die den beiden Ketten gemeinsam sind, und die entkoppelbare mechanische Antriebsvorrichtung enthält, zu der einerseits die Programmvorwahl-Gegennocke (14), die zwischen der Nocke (10) zur sanften Programmvorwahl und dem zweiten Ende des Hauptnockenblocks (3) axial gleitend in dem Hauptnockenblock (3) montiert ist, und andererseits die zurückziehbaren mechanischen Verbindungsmittel (44 bis 51) zwischen der Schrittschaltnocke (4) und der Programmvorwahl-Gegennocke (14) sowie die gleitenden mechanischen Verbindungsmittel (30, 31) zwischen dem Hauptnockenblock (3) und der Programmvorwahl-Gegennocke (14) gehören.
  4. Programmsteuerung nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß sie als zurückziehbare mechanische Verbindungsmittel zwischen der Schrittschaltnocke (4) und der Programmvorwahl-Gegennocke (14) einerseits mindestens einen länglichen zurückziehbaren Verriegelungsstift (46 oder 47), der von der Programmvorwahl-Gegennocke (14) getragen und permanent elastisch durch eine Feder (48 oder 49) aus der Gegennocke (14) in Richtung der Schrittschaltnocke (4) herausgedrückt wird, und andererseits mindestens ein längliches Empfangsloch (50 oder 51) enthält, das in der Schrittschaltnocke (4) ausgebildet ist und das vorstehende Ende dieses Verriegelungsstiftes (46 oder 47) aufnehmen kann.
  5. Programmsteuerung nach Anspruch 4, dadurch gekennzeichnet, daß die Programmvorwahl-Gegennocke (14) einerseits symmetrisch und parallel zu ihrer Längsachse zwei Längslöcher (44, 45), die die Verriegelungsstifte (46 und 47) in ihrer Gleitbewegung empfangen und führen sollen, wobei die Enden dieser Löcher einen weiteren Durchmesser als den ihrer zentralen Bereiche besitzen, um die Köpfe der Verriegelungsstifte (46, 47) und die Federn (48 und 49) aufzunehmen und ihre Bewegung zu erleichtern, und andererseits in ihrem Zentrum ein axiales Loch besitzt, das eine Drehachse (7) und eine Feder (16) aufnehmen soll, die die Programmvorwahl-Gegennocke (14) permanent gegen die Programmvorwahlnocke (10) drückt.
  6. Programmsteuerung nach Anspruch 3, dadurch gekennzeichnet, daß sie als gleitende mechanische Verbindungsmittel zwischen dem Hauptnockenblock (3) und der Programmvorwahl-Gegennocke (14) in Abstand angeordnete Längsrippen (30) und entsprechende Längsrinnen (31) auf der Programmvorwahl-Gegennocke (14) bzw. dem Hauptnockenblock (3) oder umgekehrt besitzt.
  7. Programmsteuerung nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß die Nocke (10) zur sanften Programmvorwahl auf ihrer aktiven Oberfläche in gegenseitigem Abstand axiale Erhebungen (28) trägt, während die Programmvorwahl-Gegennocke (14) an ihrem Ende entsprechende Vertiefungen (33) aufweist, die die axialen Erhebungen (28) dieser Nocke (10) zur sanften Programmvorwahl aufnehmen sollen.
  8. Programmsteuerung nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß die Programmvorwahl-Gegennocke (14) auf der Peripherie ihres Endes eine seitliche Leiste (35) besitzt, die über einen Betätigungshebel (36) einen elektrischen Kontakt (37) zur Stromversorgung des Mikromotors (5) steuern soll.
EP91401213A 1990-06-01 1991-05-07 Elektromechanisches Programmschaltwerk mit leichter Programmvorwahl Expired - Lifetime EP0459851B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9006875 1990-06-01
FR9006875A FR2662849B1 (fr) 1990-06-01 1990-06-01 Programmateur electromecanique a preselection douce de programme.

Publications (2)

Publication Number Publication Date
EP0459851A1 EP0459851A1 (de) 1991-12-04
EP0459851B1 true EP0459851B1 (de) 1994-09-28

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EP91401213A Expired - Lifetime EP0459851B1 (de) 1990-06-01 1991-05-07 Elektromechanisches Programmschaltwerk mit leichter Programmvorwahl

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US (1) US5170022A (de)
EP (1) EP0459851B1 (de)
DE (1) DE69104266T2 (de)
ES (1) ES2061200T3 (de)
FR (1) FR2662849B1 (de)

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FR2687836B1 (fr) * 1992-02-21 1994-04-15 Esswein Sa Programmateur muni d'un systeme de commande en pas a pas.
IT1262084B (it) * 1993-03-08 1996-06-19 Eaton Controls Spa Dispositivo di servoposizionamento e resettaggio per programmatori temporizzati
US5494062A (en) * 1995-02-03 1996-02-27 White Consolidated Industries, Inc. Electromechanical controller for dishwasher with alternating flow
US5831230A (en) * 1996-12-20 1998-11-03 Emerson Electric Co. Appliance timer having a cam which is operated at multiple speeds
US6441326B1 (en) 1999-08-02 2002-08-27 France/Scott Fetzer Company Timer
US6080943A (en) * 1999-08-02 2000-06-27 France/Scott Fetzer Company Timer
US6797897B2 (en) * 1999-08-02 2004-09-28 France/Scott Fetzer Company Timer
US6583371B1 (en) 2001-11-02 2003-06-24 France/Scott Fetzer Company Timer
US7009122B2 (en) * 2002-10-07 2006-03-07 Robertshaw Controls Company Push-to-start appliance program timer and method utilizing snap-action switch
CN100394526C (zh) * 2006-03-10 2008-06-11 宁波东海定时器有限公司 一种具有浸泡功能的洗涤定时器
CN101968108B (zh) * 2010-09-29 2012-11-21 贵州长征电力设备有限公司 一种有载分接开关的升降机构

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FR1204452A (fr) * 1958-03-31 1960-01-26 Cie Crouzet Perfectionnements aux appareils programmateurs électriques
US3319019A (en) * 1964-11-06 1967-05-09 Crouzet Sa Timed control device with variable programmed sequences
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FR1533219A (fr) * 1966-12-23 1968-07-19 Crouzet Sa Nouveau dispositif d'avance pas à pas applicable aux programmateurs notamment pour machines à laver
FR1583242A (de) * 1968-06-21 1969-10-24
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FR2522874A1 (fr) * 1982-03-02 1983-09-09 Carpano & Pons Dispositif de commande electromecanique comportant des interrupteurs actionnes par cames
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FR2649246B1 (fr) * 1989-07-03 1994-06-17 Crouzet Sa Programmateur a preselection de programme
US4948928A (en) * 1989-08-16 1990-08-14 Eaton Corporation Push/push reset programmer

Also Published As

Publication number Publication date
US5170022A (en) 1992-12-08
EP0459851A1 (de) 1991-12-04
DE69104266T2 (de) 1995-02-16
FR2662849A1 (fr) 1991-12-06
ES2061200T3 (es) 1994-12-01
FR2662849B1 (fr) 1992-08-07
DE69104266D1 (de) 1994-11-03

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