WO2024256579A8 - Improved linear actuator - Google Patents

Improved linear actuator Download PDF

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Publication number
WO2024256579A8
WO2024256579A8 PCT/EP2024/066445 EP2024066445W WO2024256579A8 WO 2024256579 A8 WO2024256579 A8 WO 2024256579A8 EP 2024066445 W EP2024066445 W EP 2024066445W WO 2024256579 A8 WO2024256579 A8 WO 2024256579A8
Authority
WO
WIPO (PCT)
Prior art keywords
movable core
fixed element
extended position
rest position
movable
Prior art date
Application number
PCT/EP2024/066445
Other languages
French (fr)
Other versions
WO2024256579A1 (en
Inventor
Alessandro TASSI
Umberto BOTTERO
Elena MANARI
Original Assignee
Spin Applicazioni Magnetiche S.R.L.
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 Spin Applicazioni Magnetiche S.R.L. filed Critical Spin Applicazioni Magnetiche S.R.L.
Publication of WO2024256579A1 publication Critical patent/WO2024256579A1/en
Publication of WO2024256579A8 publication Critical patent/WO2024256579A8/en
Pending 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
    • H01F7/16—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
    • 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
    • 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
    • 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
    • H01F2007/1692—Electromagnets or actuators with two coils

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electromagnets (AREA)

Abstract

An actuator device (10) is described, having a movable core (11) which includes at least one pair of permanent magnets (12a, 12b) which follow each other along an axis of symmetry (H-H) thereof, the movable core (11) being movable between a rest position and an extended position, at least one coil (15, 15a, 15b) which is at least partially wound around the movable core (11) and configured to generate an electromagnetic field when current flows therethrough, so as to cause the movement of the movable core (11) from the rest position to the extended position and vice versa, and a fixed element (25) which is at least partially arranged around the movable core (11); the permanent magnets (12a, 12b) and the fixed element (25) are configured to generate a magnetic force (Fm) between the movable core (11) and said fixed element (25), said magnetic force being apt to drive said movable core (11) towards the rest position when said movable core is in the extended position.
PCT/EP2024/066445 2023-06-16 2024-06-13 Improved linear actuator Pending WO2024256579A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102023000012399A IT202300012399A1 (en) 2023-06-16 2023-06-16 IMPROVED LINEAR ACTUATOR
IT102023000012399 2023-06-16

Publications (2)

Publication Number Publication Date
WO2024256579A1 WO2024256579A1 (en) 2024-12-19
WO2024256579A8 true WO2024256579A8 (en) 2025-03-20

Family

ID=87974744

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/066445 Pending WO2024256579A1 (en) 2023-06-16 2024-06-13 Improved linear actuator

Country Status (2)

Country Link
IT (1) IT202300012399A1 (en)
WO (1) WO2024256579A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1132646A (en) * 1979-06-05 1982-09-28 Christian C. Petersen Linear motor
GB2271668A (en) * 1992-05-29 1994-04-20 Westinghouse Electric Corp Bistable magnetic actuator
DE102019112334A1 (en) * 2019-05-10 2020-11-12 Eto Magnetic Gmbh Actuator device for active vibration reduction, damping and / or cancellation

Also Published As

Publication number Publication date
IT202300012399A1 (en) 2024-12-16
WO2024256579A1 (en) 2024-12-19

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