EP0159616B1 - Programme-switching apparatus, particularly for household appliances - Google Patents

Programme-switching apparatus, particularly for household appliances Download PDF

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Publication number
EP0159616B1
EP0159616B1 EP85104312A EP85104312A EP0159616B1 EP 0159616 B1 EP0159616 B1 EP 0159616B1 EP 85104312 A EP85104312 A EP 85104312A EP 85104312 A EP85104312 A EP 85104312A EP 0159616 B1 EP0159616 B1 EP 0159616B1
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EP
European Patent Office
Prior art keywords
drum
program
control apparatus
ring
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
Application number
EP85104312A
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German (de)
French (fr)
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EP0159616A1 (en
Inventor
Manfred Breitkopf
Hartmut Dipl.-Ing. Schumacher (Fh)
Martin Meinke
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Siemens AG
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Siemens AG
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Publication of EP0159616A1 publication Critical patent/EP0159616A1/en
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Publication of EP0159616B1 publication Critical patent/EP0159616B1/en
Expired legal-status Critical Current

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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
    • H01H43/102—Driving mechanisms using a pawl and ratchet wheel mechanism

Definitions

  • the invention relates to a program control device, in particular for domestic appliances, which has hollow cylindrical drums, two of which are driven by a transport mechanism, which has a motor-driven eccentric with an attached rocker arm with spring-loaded transport plungers, with a first contact-actuating drum as the program-determining cam drum is formed, and a second drum is designed such that it allows the passage of a transport plunger for further transport of the cam drum, furthermore a third drum also has cams actuating contact sets.
  • the step times depend on the step-by-step transport of the drums, which is due to the step cycle.
  • the program control device has two cam drums, the first of which actuates the program-defining contacts and the second the time-dependent contacts of the contact set.
  • the second cam drum thus also contains the reversing contacts for reversing the direction of rotation of the drive, for example the washing machine.
  • the reversible cycles that can be achieved can therefore only be a multiple of a timer step, e.g. 15 sec. On, 5 sec. Break.
  • a timer step e.g. 15 sec. On, 5 sec. Break.
  • shorter switch-on times and reversing pauses are desirable, for example a 3 sec. On, 2 sec.
  • the invention is therefore based on the object of improving an arrangement of the type mentioned above in such a way that the step times can be adapted as far as possible without considerable effort.
  • the object is achieved in a simple manner in that the third drum, designed as a reversing cam drum, is continuously driven by the motor via a gear and the second drum is designed as a separate timing ring, in whose toothing one of the transport plungers engage or for the further transport of the first cam drum through the Can reach through gearing.
  • the third drum is rotatably mounted on the first. The space requirement can be reduced if the timer ring is guided inside the first cam drum.
  • the timer ring is guided without considerable effort if the timer ring is guided on its inside on plastic guide parts, which are applied to the engine's support webs and surround the ring for axial securing in a U-shaped cross section.
  • a latching arm engaging in the toothing of the timer ring is integrally formed on one of the guide parts, or if a backstop is assigned to the timer ring.
  • Optimal meshing between the teeth of the reversing drum and the drive gearwheel results when the third drum is pretensioned in the direction of the support plate of the program control unit via a bow spring.
  • the program control device shown in the drawing consists of the contact set 1, the contacts of which are operatively connected via the contact lever 2 as a function of a first cam drum 3 with program-defining contacts and a third drum 4 as a reversing cam drum with reversing contacts.
  • Another hollow cylindrical drum is rotatably guided as a timing ring 5 on the inner wall of the cam drum 3, which also contains the toothing 7 for transporting the cam drum.
  • the timer ring 5 is secured against axial displacement by at least one U-shaped plastic guide part 8, which in turn is snapped onto locking webs 10 for the drive motor 11 of the program control unit via locking arms 9.
  • One of these plastic guide parts has a locking arm 12 which engages in the toothing 13 and serves as a backstop for the timer ring 5.
  • the third drum 4, which contains the reversing cams 14, is guided in the radial direction on an outer wall surface 15 of the first cam drum 3.
  • a wire spring 16 takes over the axial guidance.
  • the bracket part 17 of the wire spring 16 projects beyond one of the cam rings 14.
  • the free arms 18 are inserted into a recess 19 in a base plate 20.
  • a side wall 21 holds the bow spring in the inserted position.
  • the program control unit is driven by a motor 11 which, via an axially and radially sprung motor gear wheel 22, drives a gear wheel 23 which is provided with a backstop 24 and drives the further gear wheels 25 and 26. From which three gears ring existing gear 26 engages a toothed ring in the eccentric gear 27.
  • the drum 4 serving as a reversing cam drum for the reversing contacts is completely separated from the timer ring 5, which has no cams.
  • the rotation times of the reversing drum and the timer ring are in an integer relationship to each other because of the assignment of the reversing contacts when the cam drum is executed.
  • Short, freely selectable reversing times can be realized together with long step times on the first cam drum without additional time stretching mechanisms.

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  • Transmission Devices (AREA)

Description

Die Erfindung bezieht sich auf ein Programmsteuergerät, insbesondere für Hausgeräte, das hohlzylinderförmige Trommeln aufweist, von denen zwei mit einem, einen motorisch angetriebenen Exzenter mit einer daran anliegenden Schwinge mit federflasteten Transportstößeln aufweisenden, Transportwerk angetrieben sind, wobei eine erste Kontaktsätze betätigende Trommel als programmbestimmende Nockentrommel ausgebildet ist, und eine zweite Trommel derart ausgebildet ist, daß sie den Durchgriff eines Transportstößels zum Weitertransport der Nockentrommel zuläßt, ferner eine dritte Trommel ebenfalls Kontaktsätze betätigende Nocken aufweist.The invention relates to a program control device, in particular for domestic appliances, which has hollow cylindrical drums, two of which are driven by a transport mechanism, which has a motor-driven eccentric with an attached rocker arm with spring-loaded transport plungers, with a first contact-actuating drum as the program-determining cam drum is formed, and a second drum is designed such that it allows the passage of a transport plunger for further transport of the cam drum, furthermore a third drum also has cams actuating contact sets.

Bei einer bekannten Anordnung der obengenannten Art (DE-AS 25 10 816) sind die Schrittzeiten vom schrittweisen Transport der Trommeln abhängig, was durch den Schrittzyklus bedingt ist.In a known arrangement of the type mentioned above (DE-AS 25 10 816), the step times depend on the step-by-step transport of the drums, which is due to the step cycle.

Bei einem weiterhin bekannten Programmsteuergerät (DE-OS 2 159 702) besitzt das Programmsteuergerät zwei Nockentrommeln, von denen die erste die programmbestimmenden Kontakte und die zweite die zeitabhängigen Kontakte des Kontaktsatzes betätigt. Die zweite Nockentrommel beinhaltet somit auch die Reversierkontakte zum Umsteuern der Drehrichtung des Antriebes, beispielsweise der Waschmaschine. Beide Nockentrommeln werden hier von in einer Schwinge federbelastet geführten Transportklinken über einen Exzenter angetrieben. Da die Reversierkontakte und die Schrittzeiten hier gemeinsam von der zweiten Nockentrommel gesteuert werden, ist die maximale Schrittzeit an der ersten Nockentrommel von dem geforderten Reversierzyklus abhängig. Bei einer programmtechnisch gewählten Schrittzeit der ersten Nockentrommel von 5 Minuten ergibt sich, bedingt durch den in 60 Schaltschritten umlaufenden Zeitgeber alle 5 sec. ein Zeitgeberschritt (300 sec. : 60 = 5 sec.). Die erreichbaren Reversierzyklen können demnach nur ein Vielfaches eines Zeitgeberschrittes sein, z.B. 15 sec. Ein, 5 sec. Pause. Um bessere Waschergebnisse zu erzielen, sind kürzere Einschaltzeiten und Reversierpausen wünschenswert, beispielsweise 3 sec. Ein, 2 sec. Pause.In another known program control device (DE-OS 2 159 702), the program control device has two cam drums, the first of which actuates the program-defining contacts and the second the time-dependent contacts of the contact set. The second cam drum thus also contains the reversing contacts for reversing the direction of rotation of the drive, for example the washing machine. Both cam drums are driven here by spring-loaded transport pawls via an eccentric. Since the reversing contacts and the step times are controlled here by the second cam drum, the maximum step time on the first cam drum depends on the required reversing cycle. With a programmable step time of the first cam drum of 5 minutes, a timer step results every 5 seconds due to the timer rotating in 60 switching steps (300 seconds: 60 = 5 seconds). The reversible cycles that can be achieved can therefore only be a multiple of a timer step, e.g. 15 sec. On, 5 sec. Break. In order to achieve better washing results, shorter switch-on times and reversing pauses are desirable, for example a 3 sec. On, 2 sec.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Anordnung der obengenannten Art dahingehend zu verbessern, daß eine möglichst weitreichende Anpassung der Schrittzeiten ohne erheblichen Aufwand erreicht werden kann. Die Aufgabe wird auf einfache Weise dadurch gelöst, daß die dritte Trommel als Reversiernockentrommel ausgebildet kontinuierlich vom Motor über ein Getriebe angetrieben ist und die zweite Trommel als hiervon getrennter Zeitgeberring ausgebildet ist, in dessen Verzahnung einer der Transportstößel eingreifen oder zum Weitertransport der ersten Nockentrommel durch die Verzahnung durchgreifen kann. Hierzu ist es vorteilhaft, wenn die dritte Trommel auf der ersten drehbar gelagert ist. Der Raumbedarf kann verringert werden, wenn der Zeitgeberring im Inneren der ersten Nockentrommel geführt ist. Eine Führung des Zeitgeberringes ohne erheblichen Aufwand ergibt sich, wenn der Zeitgeberring an seiner Innenseite auf, auf Tragstege des Motors aufgebrachten, den Ring zur axialen Sicherung im Querschnitt U-förmig umgreifenden, Kunststofführungsteilen geführt ist. Um die Zuordnung von Zeitgeberring und Reversiertrommel in allen Fällen sicherzustellen ist es vorteilhaft, wenn an eines der Führungsteile ein in die Verzahnung des Zeitgeberringes eingreifender Rastarm angeformt ist, bzw. wenn dem Zeitgeberring eine Rückdrehsperre zugeordnet ist. Einen optimalen Zahneingriff zwischen der Verzahnung der Reversiertrommel und dem Antriebszahnrad ergibt sich, wenn die dritte Trommel über eine Bügelfeder in Richtung Tragplatte des Programmsteuergerätes vorgespannt ist.The invention is therefore based on the object of improving an arrangement of the type mentioned above in such a way that the step times can be adapted as far as possible without considerable effort. The object is achieved in a simple manner in that the third drum, designed as a reversing cam drum, is continuously driven by the motor via a gear and the second drum is designed as a separate timing ring, in whose toothing one of the transport plungers engage or for the further transport of the first cam drum through the Can reach through gearing. For this purpose, it is advantageous if the third drum is rotatably mounted on the first. The space requirement can be reduced if the timer ring is guided inside the first cam drum. The timer ring is guided without considerable effort if the timer ring is guided on its inside on plastic guide parts, which are applied to the engine's support webs and surround the ring for axial securing in a U-shaped cross section. In order to ensure the assignment of the timer ring and reversing drum in all cases, it is advantageous if a latching arm engaging in the toothing of the timer ring is integrally formed on one of the guide parts, or if a backstop is assigned to the timer ring. Optimal meshing between the teeth of the reversing drum and the drive gearwheel results when the third drum is pretensioned in the direction of the support plate of the program control unit via a bow spring.

Anhand der Zeichnung wird ein Ausführungsbeispiel gemäß der Erfindung beschrieben.An exemplary embodiment according to the invention is described with reference to the drawing.

Es zeigen :

  • FIG 1 eine Seitenansicht des Programmsteuergerätes gemäß der Erfindung, zum Teil im Schnitt und
  • FIG 2 einen Querschnitt durch ein Programmsteuergerät nach FIG 1.
Show it :
  • 1 shows a side view of the program control device according to the invention, partly in section and
  • 2 shows a cross section through a program control device according to FIG.

Das in der Zeichnung dargestellte Programmsteuergerät besteht aus dem Kontaktsatz 1, dessen Kontakte über Kontakthebel 2 abhängig von einer ersten Nockentrommel 3 mit programmbestimmenden Kontakten und einer dritten Trommel 4 als Reversiernockentrommel mit Reversierkontakten in Wirkverbindung stehen. Eine weitere hohlzylinder förmige Trommel ist als Zeitgeberring 5 an der Innenwandung der Nockentrommel 3, die auch die Verzahnung 7 zum Transport der Nockentrommel enthält, drehbar geführt. Gegen axiales Verschieben ist der Zeitgeberring 5 durch mindestens ein U-förmig ausgebildetes Kunststofführungsteil 8 gesichert, das seinerseits über Rastarme 9 auf Halterungsstege 10 für den Antriebsmotor 11 des Programmsteuergerätes geschnappt ist. Eines dieser Kunststofführungsteile besitzt einen Rastarm 12, der in die Verzahnung 13 eingreift und als Rückdrehsperre für den Zeitgeberring 5 dient. Die dritte Trommel 4, die die Reversiernocken 14 enthält, ist an einer Au- ßenwandungsfläche 15 der ersten Nockentrommel 3 in radialer Richtung geführt. Die axiale Führung übernimmt eine Drahtfeder 16. Das Bügelteil 17 der Drahtfeder 16 überragt einen der Nockenkränze 14. Die freien Arme 18 sind in eine Aussparung 19 einer Grundplatte 20 eingeschoben. Eine Seitenwandung 21 hält die Bügelfeder in der eingeschobenen Lage. Dem Antrieb des Programmsteuergerätes dient ein Motor 11, der über ein axial und radial gefedertes Motorzahnrad 22 ein Zahnrad 23, das mit einer Rückdrehsperre 24 versehen ist, und die weiteren Zahnräder 25 und 26 antreibt. Von dem aus drei Verzahnungsringen bestehenden Zahnrad 26 greift ein Verzahnungsring in das Exzenterzahnrad 27 ein. Dieses betätigt in bekannter Weise eine Schwinge 28 mit federbelasteten Transportstösseln 29, die in die Verzahnungen des Zeitgeberringes 5 bzw. durch Durchbrechungen 30 des Zeitgeberringes 5 in die Verzahnungen 7 der ersten Nockentrommel 3 eingreifen. Je nach entsprechenden Bedürfnissen kann eine größere Anzahl von Trensportstößeln in der Schwinge vorgesehen werden. Durch die Transportstößel wird der Zeitgeberring bzw. die Programmtrommel schrittweise in Drehrichtung transportiert. Die dritte Trommel 4 wird vom Zahnrad 26, das aus drei Verzahnungsringen besteht, über das Zahnrad 31 kontinuierlich über die Innenverzahnung 32 angetrieben. Da es sich um den gleichen Antrieb handelt und das Zahnrad 26 sowohl in das Zahnrad 27 als auch in das Zahnrad 31 eingreift, ist eine feste Zuordnung für den Antrieb der Trommel 4 und den Antrieb der Nockentrommel 3 und den Zeitgeberring 5 gegeben.The program control device shown in the drawing consists of the contact set 1, the contacts of which are operatively connected via the contact lever 2 as a function of a first cam drum 3 with program-defining contacts and a third drum 4 as a reversing cam drum with reversing contacts. Another hollow cylindrical drum is rotatably guided as a timing ring 5 on the inner wall of the cam drum 3, which also contains the toothing 7 for transporting the cam drum. The timer ring 5 is secured against axial displacement by at least one U-shaped plastic guide part 8, which in turn is snapped onto locking webs 10 for the drive motor 11 of the program control unit via locking arms 9. One of these plastic guide parts has a locking arm 12 which engages in the toothing 13 and serves as a backstop for the timer ring 5. The third drum 4, which contains the reversing cams 14, is guided in the radial direction on an outer wall surface 15 of the first cam drum 3. A wire spring 16 takes over the axial guidance. The bracket part 17 of the wire spring 16 projects beyond one of the cam rings 14. The free arms 18 are inserted into a recess 19 in a base plate 20. A side wall 21 holds the bow spring in the inserted position. The program control unit is driven by a motor 11 which, via an axially and radially sprung motor gear wheel 22, drives a gear wheel 23 which is provided with a backstop 24 and drives the further gear wheels 25 and 26. From which three gears ring existing gear 26 engages a toothed ring in the eccentric gear 27. This actuates in a known manner a rocker 28 with spring-loaded transport plungers 29 which engage in the teeth of the timer ring 5 or through openings 30 in the timer ring 5 in the teeth 7 of the first cam drum 3. Depending on the corresponding needs, a larger number of sport rams can be provided in the swing arm. The timer plunger or the program drum is gradually transported in the direction of rotation by the transport plunger. The third drum 4 is driven continuously by the gear 26, which consists of three toothed rings, via the gear 31 via the internal toothing 32. Since it is the same drive and the gear 26 engages both the gear 27 and the gear 31, a fixed assignment for the drive of the drum 4 and the drive of the cam drum 3 and the timer ring 5 is given.

Die als Reversiernockentrommel dienende Trommel 4 für die Reversierkontakte ist vom Zeitgeberring 5, der keine Nocken aufweist, vollständig getrennt. Die Umlaufzeiten der Reversiertrommel und des Zeitgeberringes stehen wegen der Zuordnung der Reversierkontakte bei der Schrittausführung der Nockentrommel in einem ganzzahligen Verhältnis zueinander. Beispielsweise läuft die Reversiernockentrommel in zwei Minuten einmal und der Zeitgeberring in 12 Minuten einmal um, d.h. sie stehen in einem Verhältnis 1 :6. Hierdurch ist es möglich, auf einfache Art und Weise das Verhältnis von größter Schrittzeit an der ersten Nockentrommel und kleinster Reversierzeit von zuvor 300"/5' = 60/1 auf z.B. 720"/2" = 360/1 anzuheben.The drum 4 serving as a reversing cam drum for the reversing contacts is completely separated from the timer ring 5, which has no cams. The rotation times of the reversing drum and the timer ring are in an integer relationship to each other because of the assignment of the reversing contacts when the cam drum is executed. For example, the reversing cam drum rotates once in two minutes and the timer ring once in 12 minutes, i.e. they are in a ratio of 1: 6. This makes it possible to easily increase the ratio of the greatest step time on the first cam drum and the smallest reversing time from previously 300 "/ 5 '= 60/1 to e.g. 720" / 2 "= 360/1.

Kurze, frei wählbare Reversierzeiten können zusammen mit langen Schrittzeiten an der ersten Nockentrommel ohne zusätzliche Zeitdehnmechanismen realisiert werden.Short, freely selectable reversing times can be realized together with long step times on the first cam drum without additional time stretching mechanisms.

Claims (7)

1. Program-control apparatus, more particularly for household appliances, having hollow- cylinder-shaped drums (3, 4, 5), two of which are driven by a transport mechanism which has a motor-driven eccentric with, resting against it, a rocker (28), with spring-loaded transport plungers (29), whereby a first drum (3), which actuates sets of contacts, is developed as a program-determining cam drum and a second drum (5) is developed such that is permits the through-passage of a transport plunger (29) for the purpose of transporting the cam drum (3) on and, furthermore, a third drum (4) likewise having cams which actuate sets of contacts, characterised in that the third drum (4), developed as a reversing cam drum, is driven continuously by the motor (11) by way of a gear unit and the second drum is developed as a timer ring (5) which is separate herefrom and into the teeth of whick one of the transport plungers (29) can engage or for the purpose of transporting the first cam drum (3) on said plunger can pass through the teeth.
2. Program-control apparatus according to claim 1, characterised in that the third drum (4) is rotatably mounted on the first (3).
3. Program-control apparatus according to claim 1 or 2, characterised in that the timer ring (5) is guided inside the first cam drum (3).
4. Program-control apparatus according to claim 3, characterised in that the timer ring (5) is guided on its inside on plastic guide portions (8) which are provided on support cross-pieces (10) of the motor (11) and encompass the ring (5) in a U-shaped manner, in cross section, for the purpose of axial securement.
5. Program-control apparatus according to claim 4, characterised in that a stop arm (9), which engages into the teeth (13) of the timer ring (5), is preformed on one of the guide portions (8).
6. Program-control apparatus according to one of the preceding claims, characterised in that the third drum (4) is pre-tensioned by way of a spring clip (16) in the direction of the support plate (20) of the program-control apparatus.
7. Program-control apparatus according to one of the preceding claims, characterised in that a reverse running stop (24) is associated with the timer ring (5).
EP85104312A 1984-04-12 1985-04-10 Programme-switching apparatus, particularly for household appliances Expired EP0159616B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3413858 1984-04-12
DE19843413858 DE3413858A1 (en) 1984-04-12 1984-04-12 PROGRAM CONTROL UNIT, ESPECIALLY FOR HOME APPLIANCES

Publications (2)

Publication Number Publication Date
EP0159616A1 EP0159616A1 (en) 1985-10-30
EP0159616B1 true EP0159616B1 (en) 1989-03-15

Family

ID=6233421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104312A Expired EP0159616B1 (en) 1984-04-12 1985-04-10 Programme-switching apparatus, particularly for household appliances

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EP (1) EP0159616B1 (en)
DE (2) DE3413858A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621906A1 (en) * 1986-06-30 1988-01-07 Ako Werke Gmbh & Co PROGRAM SWITCHGEAR
DE3918712C2 (en) * 1989-06-08 1996-04-25 Ako Werke Gmbh & Co Electromechanical program switch
GB0009860D0 (en) * 2000-04-25 2000-06-07 Perkins Engines Co Ltd Timing ring
DE10234923A1 (en) 2002-07-31 2004-02-19 BSH Bosch und Siemens Hausgeräte GmbH Rotary selector switch for controlling different program sequences of electrical appliance has rotatable operating element and cooperating magnetic field sensor providing angular position codings

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE841904C (en) * 1951-01-25 1952-06-19 Seibt & Kapp Gmbh Maschf Device for the gradual rotation of the control shaft for the automatic control of the operating elements of a washing machine, in particular a series washing machine
DE1410153C3 (en) * 1959-07-25 1974-11-07 Eaton Corp., Cleveland, Ohio (V.St.A.) Program switching mechanism for automatic washing machines or the like
FR2162073B1 (en) * 1971-12-02 1976-04-23 Siemens Ag
DE2510816C2 (en) * 1975-03-12 1978-10-28 Siemens Ag PROGRAM SWITCH DEVICE, ESPECIALLY FOR WASHING MACHINE
FR2446008A1 (en) * 1979-01-08 1980-08-01 Crouzet Sa Mechanical programming unit for washing machine - consists of two cam drums on same shaft driven by separate electric motors and connected by pin and slot
DE2946994B1 (en) * 1979-11-21 1981-03-19 Siemens AG, 1000 Berlin und 8000 München Program controller

Also Published As

Publication number Publication date
DE3413858A1 (en) 1985-10-31
EP0159616A1 (en) 1985-10-30
DE3568904D1 (en) 1989-04-20

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