DE102012223997A1 - Lifting magnet for starter, has magnetic circuit whose magnetic portions are mutually buffered by damping element which is made of resilient material comprising ferromagnetic particles - Google Patents

Lifting magnet for starter, has magnetic circuit whose magnetic portions are mutually buffered by damping element which is made of resilient material comprising ferromagnetic particles Download PDF

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Publication number
DE102012223997A1
DE102012223997A1 DE201210223997 DE102012223997A DE102012223997A1 DE 102012223997 A1 DE102012223997 A1 DE 102012223997A1 DE 201210223997 DE201210223997 DE 201210223997 DE 102012223997 A DE102012223997 A DE 102012223997A DE 102012223997 A1 DE102012223997 A1 DE 102012223997A1
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Germany
Prior art keywords
core
lifting magnet
magnetic
anchor
magnetic circuit
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Application number
DE201210223997
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German (de)
Inventor
Juergen Gross
Martin Mezger
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SEG Automotive Germany GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE201210223997 priority Critical patent/DE102012223997A1/en
Publication of DE102012223997A1 publication Critical patent/DE102012223997A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/062—Starter drives
    • F02N15/063—Starter drives with resilient shock absorbers
    • 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
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnets (AREA)

Abstract

The lifting magnet (34) has a magnetic circuit (43) that is provided with an armature (37) as a magnetic element coupled to electrically operable coils (40,41). The spatial position of the armature is varied by the coils. A yoke core (46) is provided as other magnetic element. Two magnetic portions in the magnetic circuit are mutually buffered by a damping element (63) made of resilient material. The resilient material of the damping element is provided with ferromagnetic particles.

Description

Stand der TechnikState of the art

Es sind Hubmagneten für Startvorrichtungen bekannt, die in einem durch elektrische Spulen erregbaren Magnetkreis des Hubmagneten neben einem Anker zum Einziehen in die Spulen auch einen Rückschluss im Magnetkreis aufweisen. Ein am Rückschluss befestigtes Teil ist einerseits relativ zum Rückschluss beweglich und andererseits auch ferromagnetisch.There are known lifting magnets for starting devices, which also have a conclusion in the magnetic circuit in an excitable by electrical coils magnetic circuit of the solenoid in addition to an anchor for pulling in the coils. A fastened at the back part is on the one hand movable relative to the conclusion and on the other hand also ferromagnetic.

Es besteht die Aufgabe bei schlaggedämpften Teilen des Magnetkreises die magnetische Leitfähigkeit zu verbessern.It is the task in shock-damped parts of the magnetic circuit to improve the magnetic conductivity.

Beschreibung des Ausführungsbeispiels Description of the embodiment

Beschreibung der FigurenDescription of the figures

1 zeigt eine Startvorrichtung in schemenhafter Weise, 1 shows a starting device in a schematic way,

2 ein Ausführungsbeispiel eines Hubmagneten, 2 an embodiment of a solenoid,

3 eine Einzelheit des Hubmagneten, 3 a detail of the solenoid,

4 ein weiteres Ausführungsbeispiel des Hubmagneten, 4 a further embodiment of the lifting magnet,

5 ein weiteres Ausführungsbeispiel des Hubmagneten, 5 a further embodiment of the lifting magnet,

6 eine Einzelheit des Dämpfungsmittels.. 6 a detail of the damping agent ..

1 zeigt eine Startvorrichtung 10 in schemenhafter Weise. In einem Gehäuse 13 ist ein elektrischer Startermotor 16 angeordnet. Der Startermotor 16 dient dazu über ein Getriebe 19 und einen Freilauf 22 ein Ritzel 25 anzutreiben. Zwischen dem Startermotor 16 und dem Freilauf 22 kann ein Reduziergetriebe in der Bauform als Planetengetriebe eingebaut sein. Das Ritzel 25 und der Freilauf 22 sind zum Startermotor 16 hin durch ein Steilgewindegetriebe drehverschieblich verbunden. Am ritzelseitigen Ende des Steilgewindegetriebes greift ein in 1 unteres Ende 26 eines drehbar gelagerten Hebels 28 an. An einem oberen Ende 29 des Hebels 28 greift ein Ziehelement 31 an, welches durch einen Hubmagneten 34 und dessen Anker 37 in Bewegung gesetzt wird. 1 shows a starting device 10 in a schematic way. In a housing 13 is an electric starter motor 16 arranged. The starter motor 16 serves for this via a gearbox 19 and a freewheel 22 a pinion 25 drive. Between the starter motor 16 and the freewheel 22 a reducer in the design can be installed as a planetary gear. The pinion 25 and the freewheel 22 are the starter motor 16 through a steep-threaded gear rotatably connected. At the pinion side end of the helical gear engages in 1 lower end 26 a rotatably mounted lever 28 at. At an upper end 29 of the lever 28 picks up a pulling element 31 to which by a lifting magnet 34 and its anchor 37 is set in motion.

In 2 ist ein Ausführungsbeispiel eines Hubmagneten 34 gezeigt. In einem Gehäuse 38 des Hubmagneten 34 sind eine erste Spule 40 und eine zweite Spule 41 angeordnet. Die erste Spule 40 ist eine Einzugsspule, die zweite Spule eine Haltespule. Beide Spulen 40 und 41 sind elektrisch betreibbar und dienen dazu den Anker 37 mittels eines Magnetkreises 43 in die Spulen 40 und 41 einzuziehen. Der Magnetkreis 43 weist als Bestandteile beispielsweise das Gehäuse 38, einen Rückschlusskern 46, ein bewegliches Kernteil 49 und den Anker 37 auf. Das Kernteil 49 ist im Rückschlusskern 46 axial beweglich gelagert.In 2 is an embodiment of a solenoid 34 shown. In a housing 38 of the lifting magnet 34 are a first coil 40 and a second coil 41 arranged. The first coil 40 is a feeder coil, the second coil is a holding coil. Both coils 40 and 41 are electrically operated and serve the anchor 37 by means of a magnetic circuit 43 in the coils 40 and 41 collect. The magnetic circuit 43 has as components, for example, the housing 38 , an inference core 46 , a movable core part 49 and the anchor 37 on. The core part 49 is in the backbone core 46 mounted axially movable.

Es ist somit ein Hubmagnet 34, mit einer elektrisch betreibbaren Spule 40 bzw. 41 offenbart, mit einem Magnetkreis 43, der einen Anker 37 aufweist, der durch die Spule 40, 41 in seiner örtlichen Lage verändert werden kann, des Weiteren mit einem Rückschlusskern 46, der ein radialer Pfad des Magnetkreises 43 zum Anker 37 hin ist, wobei an dem Rückschlusskern 46 ein Kernteil 49 beweglich gehaltert ist. Das Kernteil 49 ist in dem Rückschlusskern 46 axial beweglich gelagert.It is thus a solenoid 34 , with an electrically operated coil 40 respectively. 41 disclosed with a magnetic circuit 43 who has an anchor 37 that passes through the coil 40 . 41 can be changed in its local situation, further with a return core 46 , which is a radial path of the magnetic circuit 43 to the anchor 37 is, where at the return core 46 a core part 49 is held movably. The core part 49 is in the inference nucleus 46 mounted axially movable.

Der Rückschlusskern 46 ist dabei derartig ausgeführt, dass sich an seinem radialen Innenumfang 52 ein hohlzylindrisches Hülsenteil 55 vorzugsweise einstückig anschließt. Dieses Hülsenteil 55 führt das Kernteil 49 wie einen Kolben axial.The inference core 46 is designed in such a way that at its radial inner circumference 52 a hollow cylindrical sleeve part 55 preferably integrally connected. This sleeve part 55 leads the core part 49 like a piston axially.

Das Kernteil 49 ist vorzugsweise so ausgeführt, dass dieses zwischen dem Rückschlusskern 46 und dem Anker 37 einen angeformten Kragen 58 aufweist. An dem vom Anker 37 abgewandten Ende des Kernteils 49 ist ein gefügter Anschlag 60 angeordnet, der ein Herausfallen des Kernteils 49 aus dem Hülsenteil 55 verhindert. Zwischen dem Kragen 58 und dem Hülsenteil 55 ist ein Dämpfungsmittel 63 angeordnet. Das Dämpfungsmittel 63 weist ferromagnetische Partikel auf, die eine durch das Dämpfungsmittel 63 vorhandene magnetische Lücke im Pfad des Magnetkreises 43 verkleinern, da durch die ferromagnetischen Partikel die Lücke zumindest etwas das einhergehende Magnetfeld „leitet“. Das Kernteil 49 kann durch das Dämpfungsmittel 63 gegen den Rückschlusskern 46 bzw. das Hülsenteil 55 mittelbar gedrückt werden, ohne dass ein nennenswertes und störendes Geräusch entsteht.The core part 49 is preferably designed so that this between the return core 46 and the anchor 37 a molded collar 58 having. At the anchor 37 remote end of the core part 49 is a mated plot 60 arranged, the falling out of the core part 49 from the sleeve part 55 prevented. Between the collar 58 and the sleeve part 55 is a damping agent 63 arranged. The damping agent 63 has ferromagnetic particles, one through the damping means 63 existing magnetic gap in the path of the magnetic circuit 43 shrink because the gap at least somewhat "directs" the accompanying magnetic field through the ferromagnetic particles. The core part 49 can by the damping means 63 against the inference core 46 or the sleeve part 55 be pressed indirectly, without causing a significant and disturbing noise.

Der Hubmagnet 34 bzw. das Kernteil 49 hat ein durchgehendes Stufenzylinderloch 66, wobei das Stufenzylinderloch 66 einen ersten Durchmesser 69 und einen zweiten größeren Durchmesser 72 hat. Das Kernteil 49 weist eine vom Anker 37 abgewandte Rückseite 75 aufweist, zu der das Stufenzylinderloch 66 mit seinem größeren Durchmesser 72 mündet.The lifting magnet 34 or the core part 49 has a through-stepped cylinder hole 66 where the step cylinder hole 66 a first diameter 69 and a second larger diameter 72 Has. The core part 49 has one from the anchor 37 opposite rear side 75 to which the stepped cylinder hole 66 with its larger diameter 72 empties.

Im Bereich des Stufenzylinderlochs 66 mit dem größeren Durchmesser 72 ist ein Element 78 zur Halterung einer Kontaktbrücke 81 verschieblich geführt.In the area of the stepped cylinder hole 66 with the larger diameter 72 is an element 78 for holding a contact bridge 81 slidably guided.

In 3 ist ausschnittweise ein Detail der Lagerung des Kernteils 49 im Rückschlusskern 46 und dessen Hülsenteil 55 dargestellt. Wie oben erwähnt, ist an dem vom Anker 37 abgewandten Ende des Kernteils 49 ein gefügter Anschlag 60 angeordnet, der ein Herausfallen des Kernteils 49 aus dem Hülsenteil 55 verhindert. Der Anschlag 60 wird durch einen in eine Nut 82 eingefügten Ring 84 gebildet. Der Ring 84, beispielsweise als Sprengring oder als Simmerring ausgeführt, wird in die Nut 82 eingesetzt. Der Ring 84 verhindert das Herausfallen des Kernteils 49, indem der Ring 84 an einer nicht näher bezeichneten Stirnfläche eines Absatzes 87 im Rückschlusskern 46 anliegt.In 3 is a detail of the storage of the core part 49 in the conclusion core 46 and its sleeve part 55 shown. As mentioned above, that is from the anchor 37 remote end of the core part 49 an attached plot 60 arranged, the falling out of the core part 49 from the sleeve part 55 prevented. The stop 60 is through a into a groove 82 inserted ring 84 educated. The ring 84 , for example, designed as a snap ring or Simmerring, is in the groove 82 used. The ring 84 prevents the core part from falling out 49 by the ring 84 at an unspecified end face of a paragraph 87 in the conclusion core 46 is applied.

4 zeigt eine alternative Ausführungsform des Ankers 37. Am Anker 37 ist ein zylindrisches Magnetteil 103 befestigt, wobei zwischen dem Anker 37 und dem am Anker 37 befestigten Magnetteil 103 das Dämpfungsmittel 63 angeordnet ist. 4 shows an alternative embodiment of the anchor 37 , At the anchor 37 is a cylindrical magnet part 103 attached, being between the anchor 37 and at the anchor 37 attached magnetic part 103 the damping agent 63 is arranged.

Wie in 5 dargestellt, kann das Dämpfungsmittel 63 auch zwischen dem Anker 37 und dem Rückschlusskern 46 angeordnet sein.As in 5 shown, the damping means 63 also between the anchor 37 and the inference core 46 be arranged.

Gemäß einer weiteren Alternative nach 2 ist an dem Rückschlusskern 46 ein Kernteil 49 beweglich gehaltert ist, wobei zwischen dem Rückschlusskern 46 und dem Kernteil 49 das Dämpfungsmittel 63 angeordnet ist.According to another alternative 2 is at the inference core 46 a core part 49 is movably supported, being between the return core 46 and the core part 49 the damping agent 63 is arranged.

6 zeigt einen Querschnitt durch das Dämpfungsmittel 63 mit den ferromagnetische Partikeln 100. Solche Materialien werden auch als Soft Magnetic Compound bezeichnet. In diesem Fall weist das Dämpfungsmittel 63 als elastischen Anteil ein Elastomer (bspw. Kautschuk) auf, in das Weicheisenpartikel eingebettet sind. 6 shows a cross section through the damping means 63 with the ferromagnetic particles 100 , Such materials are also referred to as soft magnetic compound. In this case, the damping means 63 as an elastic portion of an elastomer (eg rubber), are embedded in the soft iron particles.

Claims (5)

Hubmagnet mit einer elektrisch betreibbaren Spule (40, 41), mit einem Magnetkreis (43), der einen Anker (37) als ein Magnetteil aufweist, der durch die Spule (40, 41) in seiner örtlichen Lage verändert werden kann, des Weiteren mit einem Rückschlusskern (46) als ein weiteres Magnetteil, wobei in dem Magnetkreis (43) zwei Magnetteile gegeneinander durch ein Dämpfungsmittel (63) aus elastischem Material gepuffert sind, dadurch gekennzeichnet, dass das elastische Material des Dämpfungsmittels (63) ferromagnetische Partikel (100) aufweist. Solenoid with an electrically operated coil ( 40 . 41 ), with a magnetic circuit ( 43 ), an anchor ( 37 ) as a magnetic part passing through the coil ( 40 . 41 ) can be changed in its local situation, furthermore with an inference core ( 46 ) as a further magnetic part, wherein in the magnetic circuit ( 43 ) two magnetic parts against each other by a damping means ( 63 ) are buffered from elastic material, characterized in that the elastic material of the damping means ( 63 ) ferromagnetic particles ( 100 ) having. Hubmagnet nach Anspruch 1, dadurch gekennzeichnet, dass das Dämpfungsmittel (63) zwischen dem Anker (37) und dem Rückschlusskern (46) angeordnet ist. Lifting magnet according to claim 1, characterized in that the damping means ( 63 ) between the anchor ( 37 ) and the inference core ( 46 ) is arranged. Hubmagnet nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass am Anker (37) ein Magnetteil (103) befestigt ist, wobei zwischen dem Anker (37) und dem am Anker (37) befestigten Magnetteil (103) das Dämpfungsmittel (63) angeordnet ist.Lifting magnet according to claim 1 or 2, characterized in that the armature ( 37 ) a magnetic part ( 103 ), wherein between the anchor ( 37 ) and the anchor ( 37 ) fixed magnetic part ( 103 ) the damping means ( 63 ) is arranged. Hubmagnet nach Anspruch 1, dadurch gekennzeichnet, dass an dem Rückschlusskern (46) ein Kernteil (49) beweglich gehaltert ist, wobei zwischen dem Rückschlusskern (46) und dem Kernteil (49) das Dämpfungsmittel (63) angeordnet ist.Lifting magnet according to claim 1, characterized in that at the return core ( 46 ) a core part ( 49 ) is movably supported, whereby between the inference core ( 46 ) and the core part ( 49 ) the damping means ( 63 ) is arranged. Startvorrichtung mit einem Hubmagneten (34) nach einem der vorstehenden Ansprüche.Starting device with a lifting magnet ( 34 ) according to any one of the preceding claims.
DE201210223997 2012-12-20 2012-12-20 Lifting magnet for starter, has magnetic circuit whose magnetic portions are mutually buffered by damping element which is made of resilient material comprising ferromagnetic particles Withdrawn DE102012223997A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3028092A1 (en) * 2014-10-30 2016-05-06 Valeo Equip Electr Moteur ELECTROMAGNETIC POWER SWITCH PROVIDED WITH TWO-PART BUOY CORE
FR3028091A1 (en) * 2014-10-30 2016-05-06 Valeo Equip Electr Moteur ELECTROMAGNETIC POWER SWITCH PROVIDED WITH A MOBILE STRAIN CORE
WO2016066772A1 (en) * 2014-10-30 2016-05-06 Valeo Equipements Electriques Moteur Electromagnetic power contactor provided with a movable stop core
EP3144951A1 (en) * 2015-09-18 2017-03-22 Mahle International GmbH Starter for an internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830109C (en) * 1950-04-26 1952-01-31 Karl Moll Elastic mass made of rubber, synthetic rubber or the like.
DE1887812U (en) * 1964-02-20 Binder Magnete "Villmgcn (Schwarzw ) Electromagnet
US20080042788A1 (en) * 2006-07-07 2008-02-21 Denso Corporation Electromagnetic switch provided with a packing capable of suppressing wobbling motions of an electromagnetic coil
DE202011050410U1 (en) * 2011-06-10 2012-09-11 Eto Magnetic Gmbh Electromagnetic actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1887812U (en) * 1964-02-20 Binder Magnete "Villmgcn (Schwarzw ) Electromagnet
DE830109C (en) * 1950-04-26 1952-01-31 Karl Moll Elastic mass made of rubber, synthetic rubber or the like.
US20080042788A1 (en) * 2006-07-07 2008-02-21 Denso Corporation Electromagnetic switch provided with a packing capable of suppressing wobbling motions of an electromagnetic coil
DE202011050410U1 (en) * 2011-06-10 2012-09-11 Eto Magnetic Gmbh Electromagnetic actuator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3028092A1 (en) * 2014-10-30 2016-05-06 Valeo Equip Electr Moteur ELECTROMAGNETIC POWER SWITCH PROVIDED WITH TWO-PART BUOY CORE
FR3028091A1 (en) * 2014-10-30 2016-05-06 Valeo Equip Electr Moteur ELECTROMAGNETIC POWER SWITCH PROVIDED WITH A MOBILE STRAIN CORE
WO2016066772A1 (en) * 2014-10-30 2016-05-06 Valeo Equipements Electriques Moteur Electromagnetic power contactor provided with a movable stop core
EP3144951A1 (en) * 2015-09-18 2017-03-22 Mahle International GmbH Starter for an internal combustion engine
WO2017046130A1 (en) * 2015-09-18 2017-03-23 Mahle International Gmbh Starter for an internal combustion engine
US10337484B2 (en) 2015-09-18 2019-07-02 Mahle International Gmbh Starter for an internal combustion engine

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