EP4092696A1 - Actionneur électromagnétique - Google Patents

Actionneur électromagnétique Download PDF

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Publication number
EP4092696A1
EP4092696A1 EP22159846.9A EP22159846A EP4092696A1 EP 4092696 A1 EP4092696 A1 EP 4092696A1 EP 22159846 A EP22159846 A EP 22159846A EP 4092696 A1 EP4092696 A1 EP 4092696A1
Authority
EP
European Patent Office
Prior art keywords
armature
bearing
section
plate
electromagnetic actuator
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
EP22159846.9A
Other languages
German (de)
English (en)
Other versions
EP4092696B1 (fr
Inventor
Ralph Wassermann
Johannes Scholz
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.)
SVM Schultz Verwaltungs GmbH and Co KG
Original Assignee
SVM Schultz Verwaltungs GmbH and Co KG
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 SVM Schultz Verwaltungs GmbH and Co KG filed Critical SVM Schultz Verwaltungs GmbH and Co KG
Publication of EP4092696A1 publication Critical patent/EP4092696A1/fr
Application granted granted Critical
Publication of EP4092696B1 publication Critical patent/EP4092696B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F7/1607—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
    • H01F7/127—Assembling
    • 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
    • H01F7/165—Means for guiding the movement of the armature with reduced friction, e.g. bearing or coating

Definitions

  • the invention relates to an electromagnetic actuator according to the preamble of claim 1.
  • Electromagnetic actuators of the most varied configurations are known for actuating mechanically linearly actuatable devices, such as valve slides of a valve. These usually have a housing, a core, a yoke, a bobbin with coil windings and an axially movable armature therein.
  • a magnetic circuit is formed in the actuator, which includes the housing, the core, the yoke and the armature. If a voltage is applied to the coil windings, a current flows in them, as a result of which a magnetic flux is generated in the magnetic circuit of the actuator. This applies a force to the armature which linearly displaces the armature in the axial direction.
  • the armature is still usually slidably mounted in the core and in the yoke.
  • the armature has corresponding surface sections which are slidably arranged in complementarily shaped recesses.
  • a bearing element could be provided which has a tubular bearing section for bearing the armature and an annular disk-shaped fastening section for fastening the bearing element.
  • An additional cover plate can be provided to cover the bearing element, which is arranged on a bushing element and is glued or otherwise fastened together with the bushing element to an outer end face of the yoke. The cover plate allows a two-step fastening of the socket element to the yoke. When the cover plate is fixed to the yoke, it can prevent contaminants such as chips from entering the electromagnetic actuator.
  • An electromagnetic actuator having a housing, a coil former arranged in the housing and carrying at least one coil winding which at least partially encloses an armature space, an armature arranged to be axially movable in the armature space, a first bearing section for radially mounting the armature, and a plate-shaped portion arranged on the first bearing portion on a side remote from the armature space.
  • the first bearing section and the plate-shaped section form a one-piece, combined bearing component.
  • the housing encloses the bobbin, the armature space and the armature and could have a largely cylindrical shape.
  • the housing is preferably open at a front end, so that the coil body with the coil windings arranged on it can be introduced into the housing. It is advantageous to close the front end in question by the yoke, in that the yoke and the housing form a positive and/or non-positive connection with one another there.
  • the bearing component is preferably fixed to the yoke.
  • the anchor may preferably comprise an anchor body and an anchor rod which are connected to each other.
  • the anchor rod can protrude from the anchor body on two oppositely arranged end faces of the latter, so that the anchor can be mounted in an axially movable manner by guiding the anchor rod. Due to a two-part construction, the anchor rod and the anchor body can be made of different materials. Both components can be connected to each other in a form-fitting, non-positive or material-locking manner.
  • the plate-shaped section of the bearing component can be placed on the yoke and at least partially cover a yoke opening there. This can prevent that in the further assembly or installation of the actuator impurities, such as chips, penetrate into the actuator.
  • the first bearing section which is approximately tubular or sleeve-shaped, is arranged on the plate-shaped section. Consequently, when the bearing component is assembled, the first bearing section and the plate-shaped section are correctly positioned.
  • the first bearing section and the plate-shaped section form a one-piece component.
  • the production of the bearing component is overall more cost-effective than the separate production of a cover plate and a bearing element.
  • a separate alignment of a cover plate on the yoke or the housing is not necessary and a gap that usually results between the cover plate and the first bearing element and a fit that is necessary there would not be necessary.
  • the installation of a single, combined bearing component is quick, provides sufficient protection against contamination and the overall height of the actuator does not change.
  • the bearing component has a through hole for guiding the armature.
  • the through hole is easy to machine and after assembly of the bearing component allows visual inspection of an outwardly directed side of the hole for any contamination while the anchor rod is placed therein.
  • due to the bore there is no need for a precise configuration of a blind hole for providing a stop surface for the anchor rod in a specific axial position.
  • the bore has a shoulder, so that the bore has a first diameter on a first side facing away from the armature, which diameter exceeds a second diameter arranged on a second side facing the armature.
  • the anchor rod is supported and guided by the portion of the bore having the second diameter.
  • the axial length of a section of the bore having the second diameter can determine the frictional behavior of the anchor rod and could be adapted to the axial length of a conventional bearing element.
  • the first diameter encloses the anchor rod, forming an annular gap.
  • a socket element is arranged on the plate-shaped section.
  • the socket element is provided for plugging in a connector plug, with which an electrical voltage can be applied to the coil windings.
  • the bushing element can be arranged on an outer face of the yoke. It could be glued to the yoke there in order to enter into a flat and firm connection with the yoke.
  • the socket element can have at least two electrical contacts for making electrically conductive contact with two corresponding electrical contacts of a plug.
  • the electrical contacts of the socket element are electrically conductively connected to the at least one coil winding. It is conceivable that the socket element has exactly two electrical contacts that are connected to a corresponding coil winding. In the case of several separate coil windings, further electrical contacts can be provided accordingly, in particular several pairs of electrical contacts.
  • the combined bearing component could also be part of the bushing element, so that another component could be saved.
  • the bushing element has a stop surface facing the plate-shaped section, with the armature being designed to strike the stop surface in a neutral position.
  • the armature space is defined by the stop surface on the side of the yoke and the neutral position of the armature is defined by the stop surface. It is conceivable that the armature is urged in the direction of the stop surface by a spring element in order to achieve a reset. From this it can be moved magnetically into a deflected position.
  • the stop surface could be arranged on a stop body which protrudes into the bore on the first side.
  • the stop body could be designed as a projection which protrudes into the bore.
  • the projection and the bore could have a suitable fit that allows the stop body to be positioned in the bore in a simple manner and largely without force. This configuration has the advantage that the socket body can be aligned very precisely during assembly of the actuator.
  • the bearing component can thereby be precisely aligned with the yoke opening, as a result of which both the first bearing section and the armature and the plate-shaped section are precisely arranged in the housing.
  • the actuator 2 has a housing 4 in which a coil body 6 is arranged. This has a coil winding 8 which largely encloses an armature space 10 inside the housing 4 .
  • armature space 10 there is an armature 12 which has an armature body 14 which is fastened to an armature rod 16 and forms a concentric arrangement with it.
  • a core 18 through which the anchor rod 16 passes, is arranged at a lower front end of the housing 4 in the illustration.
  • a yoke 20 is in turn provided on a side of the housing 4 opposite the armature 18 . Between the armature 18 and the yoke 20 there is a gap 22 which can be bridged radially on the inside by the armature body 14 .
  • the armature 12 is arranged in the housing 4 in a linearly movable manner.
  • the anchor rod 16 sits in a core bore 24 of the core 18 and is longitudinally displaceable in this. In a deflected position, the anchor rod 16 projects out of the core bore 24, while in an in 1 shown neutral position within the core bore 24 remains.
  • the armature 12 is deflected when a voltage is applied to the coil winding 8 .
  • a current then flows in the coil winding 8, as a result of which a magnetic flux is generated in the magnetic circuit of the electromagnetic actuator 2, which includes the housing 4, the core 18, the yoke 20 and the armature 12.
  • This acts on the armature 12 with a force that linearly displaces it in the axial direction.
  • the armature body 14 is thereby moved in the direction of the core 18 and can there come into abutment with a cylindrical recess 26 arranged in the core 18 on the inside thereof.
  • a bearing component 32 is arranged on the yoke 20 and has a plate-shaped section 30 and a first bearing section 28 .
  • the anchor rod 16 is supported in the area of the yoke 20 by the first bearing section 28 .
  • This is sleeve-shaped and extends along a central axis of the actuator 2 into the yoke 20 in the direction of the core 18 .
  • the bearing component 32 has a continuous bore 34 in which the anchor rod 16 is guided.
  • the bore 34 has a shoulder 36 along its depth, which forms two different diameters in the bore 34 .
  • a first diameter d1 on a first side facing away from the armature 12 exceeds a second diameter d2 on a second side facing the armature 12 .
  • a first outer shoulder 38 is provided in a transition area between the plate-shaped section 30 and the first bearing section 28 . This is inserted into a yoke opening 40 and leads to the precise alignment of the bearing component 32 on the housing 4 so that the plate-shaped section 30 covers the yoke opening 40 and the first bearing section 28 is positioned to receive the anchor rod 16 .
  • a second outer shoulder 42 adjoins a side of the bearing component 32 facing away from the plate-shaped section 30, at which an outer diameter of the first bearing section 28 decreases. The assembly of the bearing component 32 is simplified since the entire first bearing section 28 is not placed radially flush in the yoke opening 40 .
  • the plate-shaped section 30 and the first layer section 28 are not centered or arranged concentrically to one another. Instead, the plate-shaped section 30 extends in a radial direction from the first bearing section 28 to beyond the coil winding 8.
  • a socket element 44 is arranged on the plate-shaped section 30 above the armature rod 16, which has electrical contacts (not shown) for connecting an external voltage source to the Coil winding 8 has.
  • the bushing element 44 has a stop surface 46 on which the anchor rod 16 rests.
  • the armature 12 could be in its neutral position, which is the off position 1 corresponds to the stop surface 46 lie.
  • the yoke 20 has a hollow-cylindrical inner section 48 which extends in the direction of the core 18 to form the gap 22 .
  • the yoke 20 could be screwed into the housing 4 at connection lines 50 .
  • the bobbin 6 can be brought into the housing 4 and fixed by fastening the yoke 20 .
  • FIG. 2 shows the actuator 2 in the same cutting direction in a plan view.
  • a cutting line AA is illustrated, which is a 90° offset sectional view 3 marks.
  • 3 shows a stop body 52 from this perspective, which is formed on the bushing element 44 and extends in the form of a web in the direction of the first bearing section 28 .
  • the stop body 52 has the stop face 46 .

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
EP22159846.9A 2021-05-17 2022-03-02 Actionneur électromagnétique Active EP4092696B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021112642.8A DE102021112642A1 (de) 2021-05-17 2021-05-17 Elektromagnetischer Aktuator

Publications (2)

Publication Number Publication Date
EP4092696A1 true EP4092696A1 (fr) 2022-11-23
EP4092696B1 EP4092696B1 (fr) 2024-08-28

Family

ID=80624934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22159846.9A Active EP4092696B1 (fr) 2021-05-17 2022-03-02 Actionneur électromagnétique

Country Status (2)

Country Link
EP (1) EP4092696B1 (fr)
DE (1) DE102021112642A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3145832A1 (fr) * 2023-02-14 2024-08-16 Valeo Embrayages Actionneur électromagnétique linéaire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021623A1 (de) * 1990-07-06 1992-01-09 Bosch Gmbh Robert Stelleinrichtung
CN1123453A (zh) * 1994-11-19 1996-05-29 张凡 磁保持电磁铁及其制备方法
EP3651167A1 (fr) 2018-11-09 2020-05-13 SVM Schultz Verwaltungs-GmbH & Co. KG Actionneur électromagnétique pourvu d'élément de palier
DE102018128142A1 (de) * 2018-11-09 2020-05-14 Svm Schultz Verwaltungs-Gmbh & Co. Kg Elektromagnetischer Aktuator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015102066A1 (de) 2015-02-13 2016-08-18 Hilite Germany Gmbh Zentralaktuator für einen Schwenkmotorversteller einer Nockenwelle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021623A1 (de) * 1990-07-06 1992-01-09 Bosch Gmbh Robert Stelleinrichtung
CN1123453A (zh) * 1994-11-19 1996-05-29 张凡 磁保持电磁铁及其制备方法
EP3651167A1 (fr) 2018-11-09 2020-05-13 SVM Schultz Verwaltungs-GmbH & Co. KG Actionneur électromagnétique pourvu d'élément de palier
DE102018128142A1 (de) * 2018-11-09 2020-05-14 Svm Schultz Verwaltungs-Gmbh & Co. Kg Elektromagnetischer Aktuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3145832A1 (fr) * 2023-02-14 2024-08-16 Valeo Embrayages Actionneur électromagnétique linéaire

Also Published As

Publication number Publication date
DE102021112642A1 (de) 2022-11-17
EP4092696B1 (fr) 2024-08-28

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