EP0114354A2 - Electro-aimant de commande du type de positionnement - Google Patents

Electro-aimant de commande du type de positionnement Download PDF

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Publication number
EP0114354A2
EP0114354A2 EP83112878A EP83112878A EP0114354A2 EP 0114354 A2 EP0114354 A2 EP 0114354A2 EP 83112878 A EP83112878 A EP 83112878A EP 83112878 A EP83112878 A EP 83112878A EP 0114354 A2 EP0114354 A2 EP 0114354A2
Authority
EP
European Patent Office
Prior art keywords
armature
cylindrical
pole piece
pole
pole shoe
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.)
Withdrawn
Application number
EP83112878A
Other languages
German (de)
English (en)
Other versions
EP0114354A3 (fr
Inventor
Roland Sudler
Jean-François Schwab
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0114354A2 publication Critical patent/EP0114354A2/fr
Publication of EP0114354A3 publication Critical patent/EP0114354A3/fr
Withdrawn legal-status Critical Current

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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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—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
    • H01F7/121—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

Definitions

  • the invention relates to a lifting magnet designed as an actuating magnet, in particular for idle control of internal combustion engines according to the preamble of claim 1.
  • Such solenoids are used to actuate a bypass valve for idle regulation of internal combustion engines in motor vehicles.
  • the actuating magnet be positioned as proportional as possible to an actuating current against the force of a return spring in order to achieve a dynamically stable control with a small control deviation.
  • a known control magnet has a coil which is practically completely enclosed by a ferromagnetic body, in the longitudinal axis of which a coaxially arranged ferromagnetic armature can be displaced.
  • the armature is mounted in the ferromagnetic body by means of a push rod, which extends through two opposite end faces of the body.
  • a pole piece is formed in the body in the region of the end face thereof, which at least partially encompasses one end of the armature.
  • the armature made of ferromagnetic material is magnetized here exclusively by the coil.
  • the present invention is therefore based on the object of developing a solenoid of the type mentioned at the beginning such that the solenoid can be controlled over a larger adjustment path in the direction of the longitudinal axis sensitively and with low mechanical hysteresis, in order to increase and decrease the actuating current to cause a displacement that is as proportional as possible.
  • the radial magnetization of the armature provided in such a way that the cylinder wall surface of the armature is polarized in the same direction as the pole surface of the outer pole shoe facing it, the mutually facing surface elements of the armature and the pole shoe try to repel each other. Since these forces oriented in the direction of the axis of symmetry increase with increasing proximity of the opposing surface elements, a centering force is exerted on the armature by them. The anchor therefore does not need to be guided radially. This essentially only needs to be provided to ensure the alignment of the armature as a result of inertial forces. -
  • the armature and the pole piece are preferably designed such that a long overlap is achieved in the direction of the longitudinal axis.
  • the above-mentioned advantage of an automatic centering of the armature is further significantly promoted by the training according to claim 2.
  • the armature designed as a cylindrical sleeve with radial magnetization, has an inner cylinder wall surface and an outer cylinder wall surface, each of which interacts with a pole piece, the centering force can be approximately doubled.
  • air gaps of approximately the same thickness are seen over the circumference, both between the inner cylinder wall surface of the sleeve and the outer cylindrical pole surface of the inner pole piece and between the outer cylinder wall surface of the sleeve and the inner cylindrical pole surface of the outer pole piece.
  • the armature expediently consists of a radially magnetized permanent magnet. This eliminates the need for a corresponding electromagnet, the manufacture of which would be relatively complex and which also requires auxiliary energy.
  • the armature designed as a sleeve is attached to one end of a magnet carrier made of non-magnetizable material, for example aluminum.
  • the magnetic carrier is in turn concentric with the outside pole shoe and, if necessary, inner pole shoe stored.
  • This training is inexpensive to manufacture, since the magnetic carrier, the shape of which can be more complicated than that of the ring-shaped armature, can be manufactured from easily machinable material.
  • the magnetic carrier can also accommodate two bearings for axially displaceable mounting of the armature. These bearings can advantageously be designed with low friction as ball bearings, through which a sliding axis extends, which is fastened coaxially in the inner pole piece.
  • the magnetic carrier can be formed as a front end cylinder to the extent of the Lagerstel len.
  • 1 denotes a body which is rotationally symmetrical about the longitudinal axis 2 and which consists of ferromagnetic material. Magnetically pure iron is particularly suitable for this.
  • the body 1 essentially comprises a cylindrical inner pole piece 3, an outer pole piece 4 shaped approximately as a hollow cylinder and a yoke 5 connecting these parts.
  • a coil 6 is arranged in the area of the yoke 5.
  • An armature 7 shaped as a ring can be displaced above the coil.
  • the armature consists of a radial permanent magnet based permanent magnet, the polarization of which is denoted by N and S on the outer and inner pole faces.
  • the anchor is shaped as a sleeve or as a hollow cylinder. Its inner diameter is somewhat larger than the outer diameter of the inner pole piece 3 and its outer diameter is somewhat smaller than the inner diameter of the outer pole piece 4, so that annular air gaps 8 and 9 are formed.
  • the outer pole piece has a conical extension 10 which surrounds an upper part 11 of the armature.
  • the armature On its upper end face, the armature is firmly connected to an externally conically shaped magnetic carrier 12.
  • the inside of the magnet carrier is of cylindrical shape with the same diameter as the armature and has an inner end face 13 which forms a stop on one end face 14 of the pole piece.
  • a guide axis 16 embedded in the inner pole piece extends through a bore 15 of the magnet carrier.
  • the body 1 When the coil 6 is de-energized, the body 1 is magnetized exclusively by the armature designed as a permanent magnet and polarization occurs on the outer pole shoe contrary to the symbols shown in FIG. 1, so that the polarization of the facing surface elements of the outer pole shoe and the Cylinder wall of the armature are opposite.
  • the armature is thus drawn into the interior of the outer pole piece until the end face 13 of the magnet carrier rests on the end face 14 of the inner pole piece.
  • Tellstrom by the S and the described magnetization of intendpolschuhs is effected 10 of the Jardinpolschuhs in consideration of the cone-shaped extension, that the armature is pushed upward from the contemplatpolschuh.
  • This movement is mechanically free of hysteresis due to the low friction of the bearing or guidance, ie when the actuating current is reduced, the armature moves inwards to the same extent as was pressed outwards after a corresponding increase in current.
  • the body 19 consists essentially of a hollow cylinder 20 of larger circumference and tapers to a hollow cylinder 21 of smaller circumference, which represents the outer pole piece.
  • the inner pole shoe 17 and the body 19 consist of pure magnetic iron.
  • a coil former 22 with a winding 23 is applied to the inner pole piece.
  • An armature 24 made of radially magnetized permanent magnetic material is slidably mounted in the upper region of the inner flange and projecting above it. As a result of this configuration, the armature can be completely enclosed on the outside by the outer pole piece 21.
  • the armature 24 is carried by a magnetic carrier 25 made of aluminum.
  • the magnet carrier is largely closed as a hollow cylinder.
  • Two bearing bushes 27, 28 spaced apart from one another in the direction of the longitudinal axis 26 are arranged in its interior.
  • a guide axis 29 extends through the bearing bushes and is also referred to as a sliding axis.
  • the magnetization ratios are the same as discussed for Figure 1. Accordingly, if the coil current 22, 23 is not acted upon by the actuating current, the armature 24 is drawn as far as possible into the inner pole piece 17 until the inner end face 30 of the magnet carrier abuts the guide axis.
  • the coil is, however, subjected to the control of power, it provides such a magnetization of the A ußenpol-

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
EP83112878A 1983-01-20 1983-12-21 Electro-aimant de commande du type de positionnement Withdrawn EP0114354A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3301760 1983-01-20
DE19833301760 DE3301760A1 (de) 1983-01-20 1983-01-20 Als stellmagnet ausgebildeter hubmagnet

Publications (2)

Publication Number Publication Date
EP0114354A2 true EP0114354A2 (fr) 1984-08-01
EP0114354A3 EP0114354A3 (fr) 1985-01-09

Family

ID=6188730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112878A Withdrawn EP0114354A3 (fr) 1983-01-20 1983-12-21 Electro-aimant de commande du type de positionnement

Country Status (2)

Country Link
EP (1) EP0114354A3 (fr)
DE (1) DE3301760A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433126A1 (de) * 1984-09-08 1986-03-20 Harting Elektronik Gmbh Ausloesemagnetsystem
GB2325567A (en) * 1997-05-17 1998-11-25 Smb Schwede Maschinenbau Gmbh Electromagnetic actuator
EP3061104A2 (fr) * 2013-10-23 2016-08-31 Rhefor GbR Actionneur électromécanique
US10522313B2 (en) 2013-10-23 2019-12-31 Rhefor Gbr Reversing linear solenoid

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005044C2 (de) * 1990-02-16 1997-11-20 Fer Fahrzeugelektrik Gmbh Verfahren zum Ansteuern einer elektromagnetischen Antriebsanordnung
DE10248125A1 (de) * 2002-10-15 2004-05-13 Pierburg Gmbh Elektromagnetische Stellvorrichtung
JP4403537B2 (ja) 2003-12-02 2010-01-27 Ｓｍｃ株式会社 リニアスライド装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE217312C (fr) *
US3541841A (en) * 1968-12-06 1970-11-24 Yawata Seitetsu Kk Electromagnetic loading device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE217312C (fr) *
US3541841A (en) * 1968-12-06 1970-11-24 Yawata Seitetsu Kk Electromagnetic loading device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3433126A1 (de) * 1984-09-08 1986-03-20 Harting Elektronik Gmbh Ausloesemagnetsystem
GB2325567A (en) * 1997-05-17 1998-11-25 Smb Schwede Maschinenbau Gmbh Electromagnetic actuator
GB2325567B (en) * 1997-05-17 2001-04-04 Smb Schwede Maschb Gmbh Electromagnetic actuator
EP3061104A2 (fr) * 2013-10-23 2016-08-31 Rhefor GbR Actionneur électromécanique
US10522313B2 (en) 2013-10-23 2019-12-31 Rhefor Gbr Reversing linear solenoid
EP3061104B1 (fr) * 2013-10-23 2022-05-11 Rhefor GbR Actionneur électromécanique

Also Published As

Publication number Publication date
DE3301760A1 (de) 1984-07-26
EP0114354A3 (fr) 1985-01-09

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Designated state(s): DE FR GB SE

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Effective date: 19841115

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18W Application withdrawn

Withdrawal date: 19870314

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SUDLER, ROLAND

Inventor name: SCHWAB, JEAN-FRANCOIS