EP3161839A1 - Système de déphasage d'arbre à cames électromagnétique - Google Patents

Système de déphasage d'arbre à cames électromagnétique

Info

Publication number
EP3161839A1
EP3161839A1 EP15732276.9A EP15732276A EP3161839A1 EP 3161839 A1 EP3161839 A1 EP 3161839A1 EP 15732276 A EP15732276 A EP 15732276A EP 3161839 A1 EP3161839 A1 EP 3161839A1
Authority
EP
European Patent Office
Prior art keywords
armature
unit
adjusting device
pole core
camshaft adjusting
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.)
Granted
Application number
EP15732276.9A
Other languages
German (de)
English (en)
Other versions
EP3161839B1 (fr
Inventor
Dominik Halder
Pedro Marull-Kessler
Wolfram Maiwald
Tsuneo Suzuki
Harald Burkart
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.)
Kendrion Villingen GmbH
Original Assignee
Kendrion Villingen GmbH
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 Kendrion Villingen GmbH filed Critical Kendrion Villingen GmbH
Publication of EP3161839A1 publication Critical patent/EP3161839A1/fr
Application granted granted Critical
Publication of EP3161839B1 publication Critical patent/EP3161839B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • 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
    • H01F7/126—Supporting or mounting
    • 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
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • 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
    • H01F2007/086—Structural details of the armature

Definitions

  • the invention relates to an electromagnetic camshaft adjusting device having an armature unit which can be moved relative to a pole core and energized by an armature plunger and having a permanent magnet unit, by which the armature unit is held in a rest position in the non-energized state of the coil unit ,
  • Such an electromagnetic camshaft adjusting device is known for example from DE 20 2011 052 220 Ul.
  • the permanent magnet unit has a disk-shaped permanent magnet there, which is accommodated between a first and a second magnetically conducting pole disk.
  • the two pole discs are welded to the anchor tappet.
  • the end of the armature plunger projecting from the housing of the electromagnetic camshaft adjusting device engages in a circumferential groove of a cam which can be adjusted on a camshaft.
  • This electromagnetic camshaft adjusting device has no spring device.
  • EP 2 252 774 B1 Another electromagnetic camshaft adjusting device is described in EP 2 252 774 B1, which is likewise placed on the end face of a camshaft of an internal combustion engine and in response to energization of the stationary coil unit and by the movement of the armature unit or of the associated armature tappet caused thereby an axial movement the camshaft adjustment causes.
  • the armature unit with the armature plunger is arranged fixed in the rotatable yoke and core unit.
  • the armature unit including the surrounding yoke unit, can rotate with the camshaft.
  • EP 1 421 591 B1 also describes an electromagnetic camshaft adjusting device.
  • a permanent magnet disc between two pole discs, which in turn is fixedly connected to the armature unit or the armature tappet.
  • the permanent magnet unit ensures that the armature unit is held fast on the pole core. Only a current applied to the coil generates a magnetic field, which counteracts the field of the permanent magnet discs and the armature unit is repelled by a spring force supported by the pole core.
  • a coil spring is provided whose spring force is smaller than the holding force of the permanent magnet disc in the de-energized state of the coil unit.
  • the present invention aims to propose a further electromagnetic camshaft adjusting device, which is simple to manufacture and nevertheless allows very fast switching times, in particular switching times of less than three milliseconds.
  • This object is achieved by an electromagnetic camshaft adjusting device having the features of patent claim 1.
  • the permanent magnet unit is arranged fixedly between a housing cover and the pole core of the electromagnetic drive unit.
  • the armature tappet is rotatably arranged in an armature of the anchoring unit, wherein the spring device is supported on a part of the armature unit, which is preferably arranged rotationally fixed or approximately rotationally fixed.
  • the part of the anchor unit may be the anchor itself, in which the anchor plunger is rotatably seated.
  • Such an electromagnetic camshaft adjusting device is characterized by a very compact design and by very constant switching times, which can be below three milliseconds.
  • Particularly advantageous is the fixed arrangement of the permanent magnet between the housing cover and the pole core. This simplifies the construction of the electromagnetic camshaft adjusting device, since the permanent magnet can be installed without any bearing or guide bushes.
  • the anchor unit is designed as a cup-shaped anchor, the bottom of which has an opening through which the anchor plunger engages.
  • the anchor tappet is preferably rotatably arranged in the armature.
  • Such a rotatable arrangement of the armature tappet in or on the armature has the advantage that the armature itself can only be arranged axially displaceably, but non-rotatably, in the electromagnetic camshaft adjusting device.
  • the anchor unit or the armature can be axially movable, but rotationally guided, according to an embodiment of the invention in a guide bush.
  • Such torsional strength can be achieved, for example, by virtue of the guide bushing, on its side facing the armature unit, and the armature unit on its side facing the guide bushing, having a tongue and groove guide extending along the center axis of the electromagnetic camshaft adjusting device.
  • the anchor plunger protrudes through the bottom of the cup-shaped anchor and is gripped on the inside of the anchor at the bottom of a retaining washer and fixed there, preferably so that the anchor plunger continue to rotate in the armature and in the opening of the retaining disc can.
  • the inventively provided spring means for supporting the force of the movement of the armature unit in the direction of the camshaft is supported at one end on a suitable surface within the camshaft adjusting, for example on the housing cover, and with its opposite, the camshaft end facing the anchor unit.
  • the spring device is supported with one end at the bottom of the cup-shaped anchor from.
  • the above-mentioned retaining disk has a smaller diameter than the spring device preferably designed as a spiral spring. hereby
  • the front end of the spring device may be supported at the bottom of the anchor of the anchor unit.
  • FIG. 1 shows a longitudinal section through an electromagnetic camshaft adjusting device in the rest position when the coil is not energized
  • FIG. 2 shows the electromagnetic camshaft adjusting device of FIG. 1 with the tappet extended
  • FIG. 3 shows the electromagnetic camshaft adjusting device of FIGS. 1 and 2 in the retreating state when the camshaft presses on the armature tappet.
  • like reference numerals designate like parts with the same meaning.
  • FIG. 1 shows an electromagnetic camshaft adjusting device 10 with a center axis X.
  • Camshaft adjusting device 10 has a pot-shaped housing 11 with an exciting coil 22 of a coil unit 20 seated therein rotationally symmetrical to the center axis X.
  • the exciter coil 22 of the coil unit 20 sits on a coil carrier body 23.
  • the housing 11 is on its side shown in FIG Cover 12 closed. At its lower side, the housing 11 has an opening 13 in which an adapter element 14 is seated with a centric Opening, through which, in a manner to be explained, an actuating element protrudes for adjusting a camshaft 80 by this actuator engages in a cam groove 82 of the camshaft 80.
  • the adapter element 14 passes through a flange 100.
  • the housing 11 of the electromagnetic camshaft adjusting device 10 rests on this flange 100.
  • a pole core 30 spaced from the interior of the electromagnetic camshaft adjusting device 10 facing surface of the cover 12.
  • This pole core 30 is directed toward the camshaft 80 with a conically tapered circumferential surface formed to provide a known control cone .
  • a permanent magnet unit 60 is arranged in the form of a permanent magnet disc.
  • the cover 12, the permanent magnet unit 60 and the pole core 30 are fixed and placed inside one another within the housing 11, preferably without a gap.
  • both the pole core 30 and the permanent magnet disc 60 are annular and have a central opening through which a spring means 70, in this case a coil spring engages.
  • the spiral spring 70 is aligned centrally to the center axis X and is supported at its end shown in Figure 1 above in an annular groove 12a of the lid 12 from. With its opposite end, the spiral spring 70 is supported on the bottom 42 of a pot-shaped armature 41. From the bottom 42 of the armature 41 extends upward and the spiral spring 70 encompassing a circumferential wall 43 of the armature 41.
  • the bottom 42 of the Anker Kers 41 has an opening 46 through which the upper end of an anchor tappet 44 protrudes.
  • This armature tappet 44 forms the aforementioned control element for the camshaft 80.
  • the armature tappet 44 is gripped by a retaining disk 45 at its end protruding through the bottom 42 of the armature 41 and fixed by the latter to the armature 41.
  • This fixing is achieved by the retaining washer 45 in that it engages in a circumferential groove at the upper end of the armature tappet 44 similar to a locking ring and at the lower end of the bottom 42 of the armature 41 cooperates with an annular projecting flange 44a of the armature tappet 44.
  • the armature 41 with its bottom 42 and the wall 43 together with the armature tappet 44 forms an armature unit 40.
  • the entire armature unit 40 that is to say the armature 41 and the armature tappet 44, are axially movable in the axial direction of the center axis X. This means that during an axial movement of the armature 41, the anchor tappet axially fixed on the armature is moved.
  • the armature 41 is seated in a guide bush 47, which allows the armature 41 to move axially.
  • armature plunger 44 - within this guide bushing 47 is not arranged or almost non-rotatable.
  • a suitable tongue and groove connection can be provided.
  • the guide bushing 47 may have a longitudinal groove running parallel along the center axis X into which a protruding longitudinal ridge also extending parallel along the center axis X engages the peripheral wall 43 of the armature 41.
  • a tongue and groove connection between armature 41 and guide bushing 47 in Figure 1 is not shown.
  • the armature 41 may be rotatably arranged with respect to the guide bushing 47.
  • the spring force of the spring device 70 By the spring force of the spring device 70, the armature 41st However, so axially clamped that it can only be rotated against the force applied by the spring means 70 spring force. With a correspondingly large dimensioning of the spring force of the armature 41 is placed almost rotationally fixed. In comparison, however, the armature tappet 44 can be relatively easily rotated within the armature 41. As a result, this solution also causes the armature tappet 44 to rotate during operation, but the armature 41 does not.
  • the armature plunger 44 is rotatably placed in the opening 46 in the bottom 42 of the armature 41.
  • Such a rotatable placement of the armature tappet 44 can be achieved, for example, by providing a certain clearance between the opening 46 of the armature 41 and the armature tappet 44 on the one hand and between the spacing of the retaining disk 45 and the flange 44a.
  • a flange-shaped yoke part 32 is to be mentioned, which is fixedly placed within the housing 11 of the electromagnetic camshaft adjusting device 10 and represents the magnetic counterpart to the pole core 30.
  • the pole core 30 and the yoke 32 are preferably fixed to a further sleeve 36, for example by welding.
  • both the lid 12 and the yoke 32 are sealed by means of sealing rings 37, 38 relative to the sleeve 36.
  • Such an electromagnetic camshaft adjusting device 10 operates as follows: SEN.
  • FIGS. 2 and 3 shows the electromagnetic camshaft adjusting device 10 in different operating states, which are still to be explained.
  • the known reference numerals are the same.
  • FIG. 1 shows the electromagnetic camshaft adjusting device in the idle state, d. H. when energized excitation coil 22. It is assumed that the armature tappet 44 is initially in its uppermost position. In this state, due to the permanent magnet unit 60, a magnetic flux of force is provided, which keeps the armature unit 40 applied to the pole core 30. It is essential that the spring device 70, so the proposed coil spring in the embodiment has a spring force which is smaller than the holding force of the permanent magnet unit 60 in the de-energized state of the exciter coil 22nd
  • the excitation coil 22 flows through current such that the force caused thereby of the force of the permanent magnet unit 60 is opposite, the force of the permanent magnet unit 60 is minimized so that the spring force of the spring device 70 is sufficient, the armature 41 push away on the anchor tappet 44.
  • this can happen so quickly that within less than 3 msec a pushing away of the armature tappet 44 is possible to intervene in the camshaft groove 82 of the camshaft 80 and adjust them accordingly.
  • the force of the permanent magnet unit 60 is then no longer sufficient in the position of the armature tappet 44 that is maximally extended in FIG. 2 in order to recover the armature 41.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un système de déphasage d'arbre à cames (10) électromagnétique comportant une unité induit (40) qui peut être déplacée relativement à un noyau polaire (30) sous l'effet du courant parcourant une unité bobine (20) stationnaire, et présente un poussoir d'induit (44) ainsi qu'une unité aimant permanent (60) permettant de maintenir l'unité induit (40) en position de repos lorsque l'unité bobine (20) n'est pas parcourue par du courant et un dispositif ressort (70) disposé entre le noyau polaire (30) et l'unité induit (40) et destiné à éloigner par pression l'unité induit (40) axialement du noyau polaire (30), la force élastique exercée par le dispositif ressort (70) étant prévue inférieure à la force de retenue exercée par l'unité aimant permanent (60) lorsque l'unité bobine (20) n'est pas parcourue par du courant. A cet effet, l'invention se caractérise par les particularités suivantes : l'unité aimant permanent (60) est disposée fixe entre un couvercle de boîtier (12) et le noyau polaire (30), le poussoir d'induit (44) est monté rotatif et le dispositif ressort (70) s'appuie sur une partie de l'unité induit (40), qui est montée solidaire en rotation. Ledit système de déphasage d'arbre à cames présente l'avantage d'avoir une commutation rapide.
EP15732276.9A 2014-06-30 2015-06-30 Système de déphasage d'arbre à cames électromagnétique Not-in-force EP3161839B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014109124.8A DE102014109124B4 (de) 2014-06-30 2014-06-30 Elektromagnetische Nockenwellenverstelleinrichtung
PCT/EP2015/064896 WO2016001254A1 (fr) 2014-06-30 2015-06-30 Système de déphasage d'arbre à cames électromagnétique

Publications (2)

Publication Number Publication Date
EP3161839A1 true EP3161839A1 (fr) 2017-05-03
EP3161839B1 EP3161839B1 (fr) 2018-06-13

Family

ID=53491542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15732276.9A Not-in-force EP3161839B1 (fr) 2014-06-30 2015-06-30 Système de déphasage d'arbre à cames électromagnétique

Country Status (10)

Country Link
US (1) US10290410B2 (fr)
EP (1) EP3161839B1 (fr)
JP (1) JP2017520714A (fr)
CN (1) CN106471589B (fr)
BR (1) BR112016029502A2 (fr)
DE (1) DE102014109124B4 (fr)
ES (1) ES2682420T3 (fr)
HU (1) HUE038825T2 (fr)
RU (1) RU2017102683A (fr)
WO (1) WO2016001254A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015115684A1 (de) 2015-09-17 2017-03-23 Eto Magnetic Gmbh Elektromagnetische Aktuatorvorrichtung sowie System
DE102016116777A1 (de) 2016-09-07 2018-03-08 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
DE102016116776A1 (de) 2016-09-07 2018-03-08 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
DE102017107403A1 (de) 2017-04-06 2018-10-11 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
DE102017119001A1 (de) 2017-08-21 2019-02-21 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung
DE102017121723B4 (de) * 2017-09-19 2021-07-01 Kendrion (Villingen) Gmbh Elektromagnetische Stellvorrichtung insbesondere zum Verstellen von Nockenwellen eines Verbrennungsmotors
JP6798755B2 (ja) * 2017-11-09 2020-12-09 株式会社Ｓｏｋｅｎ ソレノイド装置
DE102018117074A1 (de) * 2018-07-13 2020-01-16 Svm Schultz Verwaltungs-Gmbh & Co. Kg Elektromagnetischer Aktuator mit Ankerscheibe
JP2021017902A (ja) * 2019-07-17 2021-02-15 Smc株式会社 電磁弁

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5627504A (en) * 1992-04-07 1997-05-06 Avl Medical Instruments Ag Electromagnetic actuating device, in particular for a valve
DE20114466U1 (de) * 2001-09-01 2002-01-03 Eto Magnetic Kg Elektromagnetische Stellvorrichtung
US7053742B2 (en) * 2001-12-28 2006-05-30 Abb Technology Ag Electromagnetic actuator having a high initial force and improved latching
AU2004271641B9 (en) * 2003-09-05 2008-08-14 Abb Schweiz Ag Electromagnetic actuator with improved initial and latching forces
JP4910663B2 (ja) * 2006-02-27 2012-04-04 富士電機機器制御株式会社 釈放形電磁装置
DE102009015833B4 (de) * 2009-04-01 2011-04-28 Hydac Electronic Gmbh Elektromagnetische Stellvorrichtung
DE202009004611U1 (de) * 2009-04-03 2010-08-12 Eto Magnetic Gmbh Elektromagnetische Nockenwellen-Verstellvorrichtung
DE102009049009B4 (de) * 2009-10-09 2012-10-04 Pierburg Gmbh Aktuator für eine Verbrennungskraftmaschine
DE102010045601B4 (de) * 2010-09-16 2013-04-18 Hydac Electronic Gmbh Elektromagnetische Stellvorrichtung
DE202011052220U1 (de) * 2011-12-07 2013-03-11 Eto Magnetic Gmbh Bistabile elektromagnetische Stellvorrichtung sowie Nockenwellenstellvorrichtung

Also Published As

Publication number Publication date
JP2017520714A (ja) 2017-07-27
US10290410B2 (en) 2019-05-14
HUE038825T2 (hu) 2018-11-28
WO2016001254A1 (fr) 2016-01-07
DE102014109124B4 (de) 2016-05-19
US20180144855A1 (en) 2018-05-24
CN106471589A (zh) 2017-03-01
DE102014109124A1 (de) 2015-12-31
CN106471589B (zh) 2018-08-31
EP3161839B1 (fr) 2018-06-13
ES2682420T3 (es) 2018-09-20
BR112016029502A2 (pt) 2017-08-22
RU2017102683A (ru) 2018-07-31

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