EP1722380B1 - Elektrischer Gleichstromaktuator für Hausgeräte im besonderen - Google Patents

Elektrischer Gleichstromaktuator für Hausgeräte im besonderen Download PDF

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Publication number
EP1722380B1
EP1722380B1 EP06113745A EP06113745A EP1722380B1 EP 1722380 B1 EP1722380 B1 EP 1722380B1 EP 06113745 A EP06113745 A EP 06113745A EP 06113745 A EP06113745 A EP 06113745A EP 1722380 B1 EP1722380 B1 EP 1722380B1
Authority
EP
European Patent Office
Prior art keywords
shell
nucleus
electrically controlled
formation
actuator according
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.)
Active
Application number
EP06113745A
Other languages
English (en)
French (fr)
Other versions
EP1722380A2 (de
EP1722380A3 (de
Inventor
Giuseppe Marone
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.)
Elbi International SpA
Original Assignee
Elbi International SpA
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 Elbi International SpA filed Critical Elbi International SpA
Priority to PL06113745T priority Critical patent/PL1722380T3/pl
Publication of EP1722380A2 publication Critical patent/EP1722380A2/de
Publication of EP1722380A3 publication Critical patent/EP1722380A3/de
Application granted granted Critical
Publication of EP1722380B1 publication Critical patent/EP1722380B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/083—External yoke surrounding the coil bobbin, e.g. made of bent magnetic sheet

Definitions

  • the present invention refers to an electrically controlled actuator.
  • the invention refers to an electrically controlled direct current actuator of the kind defined in the preamble of claim 1.
  • US 2003/155839 A1 discloses an actuator of that kind with a cylindrical tubular nucleus having a flat annular terminal surface for abutment against a corresponding flat annular surface of a ferromagnetic frame or shell.
  • EP-A-0 185 262 discloses an actuator wherein a blind conical internal protrusion of a ferromagnetic frame or shell is adapted to engage a corresponding frusto-conical end recess of the nucleus.
  • One purpose of the present invention is to realize an electrically controlled actuator as specified above, of a perfected type and which is reliable and can be produced in a simple and economical manner.
  • an electrically controlled direct current actuator according to the invention is indicated as a whole as 10.
  • the actuator 10 is suitable for insertion in devices for distributing a washing and/or rinsing agent for domestic appliances such as washing machines, dishwashers and the like (not illustrated), but can also be used in other applications, without leaving the framework of the invention by so doing.
  • the actuator 10 comprises a shell 12 made in a single piece with a sheet of ferromagnetic material, substantially shaped in C form, and including a first and second lateral branch 14, 16 reciprocally opposed and interconnected by an intermediate portion 18.
  • the monolithic conformation of the shell 12 makes it possible to simplify the assembly of the actuator 10 as, according to a pre-existing technology, this shell was generally made in two components intended to be welded together.
  • the shell 12 houses, in a fixed manner in its internal region, a reel 20 around which a coil 22 of electrically insulated conductor wire is wound, and with, at its ends, a pair of connection elements 24, such as lamellar pins.
  • a reel 20 and the coil 22 are enclosed by an insulating casing 26 with a substantially cylindrical form, from which the connection elements 24 protrude towards the outside.
  • the coil 22 has an axis A-A which extends in a direction substantially at right angles to the first and second branch 14, 16 of the shell 12.
  • the actuator 10 also comprises a ferromagnetic nucleus 28 mounted movably with respect to the shell 12, in a manner axially translatable inside the coil 22.
  • the nucleus 28 is suitable for passing, in a manner in itself known, from an axial rest position (not shown) to an axial working position (shown in the figures) as an effect of excitation of the coil 22.
  • the nucleus 28 can be connected to elastic elements (not illustrated) of types per se known, for example a traction or compression spring, intended to hold it in/return it to the rest position when the coil 22 is deenergized.
  • the first lateral branch 14 of the shell 12 has a formation 30 with a substantially truncated cone form and the nucleus 28 has a corresponding end 32, shaped in a manner substantially complementary to the formation 30.
  • the end 32 is intended in a manner in itself known to cooperate, in a manner in itself known, with kinematic or lever mechanisms (not illustrated) by means of the translation of the nucleus 28.
  • the complementary truncated cone configuration between the end 32 of the nucleus 28 and the formation 30 of the shell 12 advantageously makes it possible to create an air gap (between the nucleus 28 and the formation 30) with a width which is lower than the stroke of the nucleus 28 relative to said formation. This makes it possible to obtain a dampening of the translation movement of the nucleus 28, due to the progressive variation of the air gap between the nucleus 28 and the formation 30. Furthermore, the above configuration permits improved centring of the nucleus 28 with respect to the shell 12 and to the casing 26, in such a way as to prevent its displacement from the A-A axis of the coil 22.
  • the formation 30 is turned towards the region outside the shell 12, and the shaped end 32 of the nucleus 28 comprises a truncated cone protrusion.
  • This configuration is found to be advantageous as it facilitates the assembly of the components of the actuator 10 as a whole. In this way, it is not necessary to open out the lateral branches 14, 16 to permit the insertion of the reel-coil-casing 20-22-26 assembly into the region inside the shell 12.
  • the nucleus 28 is hollow and manufactured by means of drawing, and the formation 30 is manufactured by means of a drawing or coining operation, and a shearing operation.
  • the second lateral branch 16, opposite the first lateral branch 14 comprising the formation 30, advantageously has an opening 34 through which the nucleus 28 faces towards the outside of the shell 12.
  • the second lateral branch 16 conveniently comprises a collar 36 integral with it and protruding towards the region outside the shell 12.
  • the collar 36 can be protruding towards the region inside the shell 12. The presence of the collar 36 favours the efficiency of the magnetic flux induced by excitation of the coil 22.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Food-Manufacturing Devices (AREA)
  • Cookers (AREA)
  • Control Of Electric Motors In General (AREA)

Claims (8)

  1. Elektrisch gesteuertes Gleichstrom-Stellglied (10), insbesondere für Verteilereinrichtungen, welche zur Verwendung in Haushaltsgeräten, wie etwa Waschmaschinen, Geschirrspülern und dergleichen geeignet sind, umfassend
    - ein einstückiges Gehäuse (12) aus ferromagnetischem Material, welches im Wesentlichen C-förmig ausgebildet ist und erste und zweite Seitenabschnitte (14; 16) aufweist, die einander gegenüber liegend und durch einen Mittelabschnitt (18) verbunden sind, der erste und der zweite Seitenabschnitt (14; 16) des Gehäuses (12) besitzen eine Ausformung (30) mit einer im Wesentlichen kegelstumpfförmigen äußeren Form, die gegen einen Bereich außerhalb des Gehäuses (12) gerichtet ist;
    - eine am Gehäuse (12) derart befestigte Leiterdrahtspule (22), dass sich deren Achse (A-A) in einem im Wesentlichen rechten Winkel zu den oben erwähnten Seitenabschnitten (14; 16) des Gehäuses (12) erstreckt und
    - einen ferromagnetischen Kern (28), welcher im Bezug zum Gehäuse (12) derart beweglich angeordnet ist, dass er in der Spule (22) axial verschiebbar ist und geeignet ist, von einer axialen Ruhestellung in eine axiale Betriebsstellung als Folge der Erregung der Spule (22) verschoben zu werden;
    das Stellglied (10) ist dadurch gekennzeichnet, dass die Ausformung (30) des Gehäuses (12) eine im Wesentlichen kegelstumpfförmige Form aufweist und
    der Kern (28) ein entsprechendes Ende (32) mit einem kegelstumpfförmigen Vorsprung aufweist, welcher im Wesentlichen komplementär zur inneren Form der Ausformung (30) ist, wobei die Ausformung (30) des Gehäuses (12) eine Öffnung aufweist, durch welche der Vorsprung (32) des Kerns (28) von außerhalb des Gehäuses (12) zugänglich ist.
  2. Elektrisch gesteuertes Stellglied nach Anspruch 1, bei dem der Kern (28) im Wesentlichen hohl ausgeführt ist.
  3. Elektrisch gesteuertes Stellglied nach Anspruch 2, bei dem der Kern (28) durch Ziehen hergestellt ist.
  4. Elektrisch gesteuertes Stellglied nach jedem einzelnen der Ansprüche 1 bis 3, bei welchem die Ausformung (30) durch Ziehen oder Prägen, und Scheren hergestellt ist.
  5. Elektrisch gesteuertes Stellglied nach Anspruch 1, bei dem der zweite oder erste Seitenabschnitt (16; 14) eine Öffnung aufweist, durch welche der Kern (28) gegen die Außenseite des Gehäuses (12) gerichtet ist; der zweite oder erste Seitenabschnitt (16; 14) besitzt einen mit diesen integrierten Kragen (36), welcher um die Öffnung (34) angeordnet ist.
  6. Elektrisch gesteuertes Stellglied nach Anspruch 5, bei welchem der Kragen (36) gegen einen Bereich außerhalb des Gehäuses (12) vorspringt.
  7. Elektrisch gesteuertes Stellglied nach Anspruch 5, bei welchem der Kragen (36) gegen einen Bereich innerhalb des Gehäuses (12) vorspringt.
  8. Elektrisch gesteuertes Stellglied nach Anspruch 5, bei welchem der zweite oder erste mit einem Kragen (36) versehene Seitenabschnitt (16; 14) gegenüber dem ersten oder zweiten mit der Ausformung (30) versehenen Seitenabschnitt (14; 16) angeordnet ist.
EP06113745A 2005-05-11 2006-05-10 Elektrischer Gleichstromaktuator für Hausgeräte im besonderen Active EP1722380B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06113745T PL1722380T3 (pl) 2005-05-11 2006-05-10 Sterowane elektrycznie urządzenie uruchamiające prądu stałego szczególnie do sprzętu gospodarstwa domowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000059U ITTO20050059U1 (it) 2005-05-11 2005-05-11 Attuatore elettrico in corrente continua, in particolare per elettrodomestici.

Publications (3)

Publication Number Publication Date
EP1722380A2 EP1722380A2 (de) 2006-11-15
EP1722380A3 EP1722380A3 (de) 2009-03-18
EP1722380B1 true EP1722380B1 (de) 2012-05-02

Family

ID=36764552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113745A Active EP1722380B1 (de) 2005-05-11 2006-05-10 Elektrischer Gleichstromaktuator für Hausgeräte im besonderen

Country Status (5)

Country Link
EP (1) EP1722380B1 (de)
AT (1) ATE556417T1 (de)
ES (1) ES2387034T3 (de)
IT (1) ITTO20050059U1 (de)
PL (1) PL1722380T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10475563B2 (en) 2015-05-29 2019-11-12 Bitron S.P.A. Direct current electric actuator, in particular for electrical household appliances

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593240A (en) * 1969-03-10 1971-07-13 Whirlpool Co Solenoid structure having single sheet metal plunger and/or yoke
US3987385A (en) * 1975-05-23 1976-10-19 Technar Incorporated Constant force solenoid
DE3445917A1 (de) * 1984-12-17 1986-06-19 Harting Elektronik Gmbh, 4992 Espelkamp Hubmagnet
US5174336A (en) * 1991-05-31 1992-12-29 Allied-Signal Inc. General purpose fluid control valve
DE10110342A1 (de) * 2001-03-03 2002-09-12 Bosch Gmbh Robert Aktuator
DE10252431A1 (de) * 2002-11-12 2004-05-27 Ina-Schaeffler Kg Elektromagnetisches Hydraulikventil, insbesondere 3/2-Wegeschaltventil zur Steuerung eines variablen Ventiltriebes einer Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10475563B2 (en) 2015-05-29 2019-11-12 Bitron S.P.A. Direct current electric actuator, in particular for electrical household appliances

Also Published As

Publication number Publication date
ITTO20050059U1 (it) 2006-11-12
EP1722380A2 (de) 2006-11-15
EP1722380A3 (de) 2009-03-18
PL1722380T3 (pl) 2012-09-28
ES2387034T3 (es) 2012-09-12
ATE556417T1 (de) 2012-05-15

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