WO2003090237A1 - Actionneur electromagnetique a aimant permanent - Google Patents
Actionneur electromagnetique a aimant permanent Download PDFInfo
- Publication number
- WO2003090237A1 WO2003090237A1 PCT/FR2003/001213 FR0301213W WO03090237A1 WO 2003090237 A1 WO2003090237 A1 WO 2003090237A1 FR 0301213 W FR0301213 W FR 0301213W WO 03090237 A1 WO03090237 A1 WO 03090237A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- magnetic
- permanent magnet
- ring
- 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.)
- Ceased
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
- 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
- H01F7/121—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 present invention relates to an electromagnetic permanent magnet actuator.
- Document US Pat. No. 4,295,111 discloses an electromagnetic actuator comprising a coil disposed around a magnetic body in which a magnetic actuating member is mounted.
- a permanent magnet is disposed around the coil and has a magnetization field extending in an axial direction of the coil.
- the permanent magnet is interposed between two rings of magnetic material which are in contact with the magnetic body. This allows the magnetic field to be concentrated and a large force to be developed.
- the stroke of the actuating member is relatively short and, for long strokes, it is necessary to increase the axial dimensions of the actuator.
- an electromagnetic actuator comprising a coil, a magnetic actuating member mounted in the coil, at least one ring made of magnetic material placed around the coil, and at least one permanent magnet attached to one end of the ring and arranged opposite a part of the outer surface of the coil, the permanent magnet having a magnetization field extending in an axial direction of the coil, the magnetic actuating member being slidably mounted in a member non-magnetic guide extending in the coil and the ring having an end opposite to the magnet which is separated from the non-magnetic guide member by a non-magnetic gap.
- part of the magnetic field remains open so that the stroke of the magnetic actuating member is increased. It is also then possible to control the position of the magnetic actuating member by an appropriate control of the supply current of the coil.
- the electromagnetic actuator comprises in a manner known per se a coil 1 fixed around a tube made of non-magnetic material 2 in which a magnetic actuating member 3 is mounted to slide.
- the coil 1 is connected by a supply wire 4 to supply means not shown making it possible to excite or de-excite the coil to operate the magnetic actuating member.
- a ring 5 forming a permanent magnet, for example a ferrite ring whose permanent magnetization field extends in an axial direction of the ring, is arranged around the coil so as to extend opposite the central part of the external surface of the coil.
- the field generated by the ring 5 thus extends in an axial direction of the coil 1.
- the ring 5. is surrounded by two rings 6 made of magnetic material, for example mild steel.
- annular plates 7 the peripheral edge of which is in contact with the internal surface of the corresponding ring 6.
- the annular plates 7 are pierced with a central orifice of diameter greater than the diameter of the non-magnetic tube 2.
- the magnetic rings 6 are thus separated from the non-magnetic tube 2 by a non-magnetic interval.
- the assembly is surrounded by an insulating casing 8, for example a molded casing which maintains places rings and end plates.
- a part of the field lines resulting from the permanent magnet 5 extends in a loop as illustrated in thin dashed line in the figure so that, even in the absence of current as illustrated in the figure, the weight of the organ magnetic actuation is partially compensated by the attractive force resulting from the permanent magnet.
- the coil 1 When the coil 1 is energized, the latter generates a complementary magnetic field which moves the magnetic actuation member 3 upwards.
- the non-magnetic interval will be reduced or increased by using an annular plate with a smaller or larger central hole.
- the actuator according to the invention has been described with plates of magnetic material 7 disposed at the ends of the coil, the actuator according to the invention can be produced without the plates 7.
- the magnetic plate 7 can in addition to being replaced in whole or in part by a plate made of non-magnetic material.
- the invention has been illustrated in a symmetrical mounting of the rings of magnetic material 6 with respect to the permanent magnet 5, the geometry of the assembly can be modified in order to obtain a particular behavior of the actuator depending on the application for which the actuator is intended.
- the invention has been illustrated with a permanent magnet in the form of a ring, the actuator according to the invention can also be produced by using a series of bars arranged facing a part of the external surface of the coil 1.
- guide member has been described in the form of a tube, it can have other shapes and be produced for example in the form of slides.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electromagnets (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE60306140T DE60306140T2 (de) | 2002-04-22 | 2003-04-16 | Elektromagnetischer betätiger mit dauermagnet |
| JP2003586897A JP2005535106A (ja) | 2002-04-22 | 2003-04-16 | 永久磁石を持つ電磁アクチュエータ |
| EP03740622A EP1497839B1 (fr) | 2002-04-22 | 2003-04-16 | Actionneur electromagnetique a aimant permanent |
| BRPI0309070A BRPI0309070B8 (pt) | 2002-04-22 | 2003-04-16 | acionador eletromagnético |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR02/04988 | 2002-04-22 | ||
| FR0204988A FR2838863B1 (fr) | 2002-04-22 | 2002-04-22 | Actionneur electromagnetique a aimant permanent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003090237A1 true WO2003090237A1 (fr) | 2003-10-30 |
Family
ID=28686234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2003/001213 Ceased WO2003090237A1 (fr) | 2002-04-22 | 2003-04-16 | Actionneur electromagnetique a aimant permanent |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US6670876B2 (fr) |
| EP (1) | EP1497839B1 (fr) |
| JP (1) | JP2005535106A (fr) |
| CN (1) | CN100351959C (fr) |
| AT (1) | ATE330321T1 (fr) |
| BR (1) | BRPI0309070B8 (fr) |
| DE (1) | DE60306140T2 (fr) |
| DK (1) | DK1497839T3 (fr) |
| ES (1) | ES2265575T3 (fr) |
| FR (1) | FR2838863B1 (fr) |
| PT (1) | PT1497839E (fr) |
| WO (1) | WO2003090237A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060056993A1 (en) * | 2004-09-14 | 2006-03-16 | Moshe Gombinsky | Magnetic spring actuator device |
| CN106224783B (zh) * | 2016-09-08 | 2019-01-18 | 湖北工业大学 | 一种磁力驱动管道检测装置 |
| US11448103B2 (en) * | 2018-06-28 | 2022-09-20 | Board Of Regents, The University Of Texas System | Electromagnetic soft actuators |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295111A (en) * | 1979-11-29 | 1981-10-13 | Nasa | Low temperature latching solenoid |
| US4419643A (en) * | 1981-04-22 | 1983-12-06 | Hosiden Electronics Co., Ltd. | Self-sustaining solenoid |
| FR2792109A1 (fr) * | 1999-04-12 | 2000-10-13 | Schneider Electric Sa | Electroaimant a circuit magnetique simplifie |
| WO2001040098A1 (fr) * | 1999-11-29 | 2001-06-07 | Serac Group | Bec de remplissage a debit reglable par un dispositif d'actionnement unique |
-
2002
- 2002-04-22 FR FR0204988A patent/FR2838863B1/fr not_active Expired - Fee Related
-
2003
- 2003-04-15 US US10/413,392 patent/US6670876B2/en not_active Expired - Lifetime
- 2003-04-16 AT AT03740622T patent/ATE330321T1/de active
- 2003-04-16 ES ES03740622T patent/ES2265575T3/es not_active Expired - Lifetime
- 2003-04-16 CN CNB038087561A patent/CN100351959C/zh not_active Expired - Lifetime
- 2003-04-16 DE DE60306140T patent/DE60306140T2/de not_active Expired - Lifetime
- 2003-04-16 JP JP2003586897A patent/JP2005535106A/ja active Pending
- 2003-04-16 PT PT03740622T patent/PT1497839E/pt unknown
- 2003-04-16 BR BRPI0309070A patent/BRPI0309070B8/pt active IP Right Grant
- 2003-04-16 WO PCT/FR2003/001213 patent/WO2003090237A1/fr not_active Ceased
- 2003-04-16 DK DK03740622T patent/DK1497839T3/da active
- 2003-04-16 EP EP03740622A patent/EP1497839B1/fr not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295111A (en) * | 1979-11-29 | 1981-10-13 | Nasa | Low temperature latching solenoid |
| US4419643A (en) * | 1981-04-22 | 1983-12-06 | Hosiden Electronics Co., Ltd. | Self-sustaining solenoid |
| FR2792109A1 (fr) * | 1999-04-12 | 2000-10-13 | Schneider Electric Sa | Electroaimant a circuit magnetique simplifie |
| WO2001040098A1 (fr) * | 1999-11-29 | 2001-06-07 | Serac Group | Bec de remplissage a debit reglable par un dispositif d'actionnement unique |
Also Published As
| Publication number | Publication date |
|---|---|
| PT1497839E (pt) | 2006-11-30 |
| ATE330321T1 (de) | 2006-07-15 |
| JP2005535106A (ja) | 2005-11-17 |
| ES2265575T3 (es) | 2007-02-16 |
| BRPI0309070B8 (pt) | 2017-03-21 |
| CN100351959C (zh) | 2007-11-28 |
| BR0309070A (pt) | 2005-02-01 |
| US6670876B2 (en) | 2003-12-30 |
| FR2838863A1 (fr) | 2003-10-24 |
| BRPI0309070B1 (pt) | 2016-10-18 |
| DK1497839T3 (da) | 2006-10-23 |
| US20030197582A1 (en) | 2003-10-23 |
| EP1497839B1 (fr) | 2006-06-14 |
| DE60306140T2 (de) | 2007-04-26 |
| CN1647219A (zh) | 2005-07-27 |
| EP1497839A1 (fr) | 2005-01-19 |
| DE60306140D1 (de) | 2006-07-27 |
| FR2838863B1 (fr) | 2004-06-25 |
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