EP0886875A1 - Actionneur electromagnetique monophase rotatif a ressort magnetique et vanne electrique mettant en oeuvre un tel actionneur - Google Patents
Actionneur electromagnetique monophase rotatif a ressort magnetique et vanne electrique mettant en oeuvre un tel actionneurInfo
- Publication number
- EP0886875A1 EP0886875A1 EP97900660A EP97900660A EP0886875A1 EP 0886875 A1 EP0886875 A1 EP 0886875A1 EP 97900660 A EP97900660 A EP 97900660A EP 97900660 A EP97900660 A EP 97900660A EP 0886875 A1 EP0886875 A1 EP 0886875A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnet
- poles
- magnetic
- actuator
- 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
Links
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 1
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
- H01F7/14—Pivoting armatures
- H01F7/145—Rotary electromagnets with variable gap
Definitions
- the present invention relates to a single phase rotary electromagnetic actuator.
- the actuator In certain applications, in particular for controlling the recirculation or air intake valve, it is desirable for the actuator to return to a determined rest position.
- the torque actuators due to the constant current of the state of the art are generally coupled in their applications with a return spring which allows, in the event of a cut in the electrical supply to the actuator, close the air intake valve to cut off the air supply to the heat engine.
- a return spring is bulky, presents risks of rupture and its return torque must be adjusted relative to the position of the valve.
- the object of the invention is to remedy these drawbacks by proposing an actuator comprising means for returning to the simple rest position, inexpensive, and requiring no adjustment.
- the actuator comprises a fixed member constituted by a stator circuit excited by at least one electric coil, and a member movable in rotation comprising a thin magnet having 2N pairs of magnetic poles magnetized in alternating directions.
- the actuator further comprises return means for bringing the movable member to a predetermined angular rest position constituted by a thin auxiliary return magnet disposed in the air gap, having 2N pairs of magnetic poles magnetized in an alternating direction and integral with the stator poles.
- the rotor poles and the magnetic poles of the auxiliary return magnet are in the form of thin annular sectors.
- the rotor poles and the magnetic poles of the auxiliary return magnet are of tubular shape.
- the auxiliary return magnet is bonded to the stator poles in a position such that the equilibrium position without current of the rotor corresponds to the position without current sought.
- the rotor cooperates with the fixed member by means of a ball stop limiting the movement of the rotor in the direction of the fixed organ.
- the ball bearing is substantially coplanar with the plane passing through the end of the stator poles.
- the 2N-pole magnetic disc constituting the auxiliary magnet has a central recess with a section at least equal to the section of the ball bearing.
- the rotor magnet is integral with a cylinder head made of a soft magnetic material.
- the stator further comprises a fixed closing yoke made of a soft magnetic material.
- the invention also relates to a valve, in particular an air intake valve for an internal combustion engine, driven by such an actuator.
- the auxiliary return magnet will be arranged so that the rest position corresponding to a partial opening of the air intake.
- FIG. 1 shows an exploded view of an actuator according to the invention
- FIG. 3 represents a view in median section of an actuator according to the invention
- - Figure 4 shows a top view of one actuator
- - Figure 5 shows a cross-sectional view of an alternative embodiment.
- FIG. 1 represents an exploded view of a first embodiment of an actuator according to the invention.
- the actuator is made up of a fixed part (1) and a mobile part in rotation (2).
- the fixed part (1) has 4 stator poles (3 to 6) in the form of annular sectors each excited by an electric coil (7 to 10).
- the stator poles (3 to 6) are extended by cores surrounded by the electric coil (7 to 10), these cores being integral with a base (11).
- the statori ⁇ ue structure is known and is not explained in more detail.
- the rotor part (2) has 4 magnetic poles formed by thin magnets (12 to 15) in the form of annular sectors magnetized in alternating directions, perpendicular to the transverse plane of the annular sectors.
- the magnetized sectors (12 to 15) are bonded to a yoke (16). This cylinder head is mounted on an axis not shown.
- the actuator comprises a second series of magnetized annular sectors (17 to 20) in alternating directions. These magnetized annular sectors (17 to 20) form an auxiliary return magnet bonded to the stator poles (3 to 6).
- FIG. 2 represents the torque curves as a function of the angular position of such an actuator.
- the curves (70 to 72) correspond to the torque as a function of the position, for a current of 1.5, 1 and 0.5 amps respectively.
- the curve (31) represents the torque in the absence of current, for a displacement of the rotary member (2) in the trigonometric direction.
- the curve (32) represents the torque in the absence of current, for a displacement of the rotary member (2) in the anti-direction trigonometric
- the curves (74 to 76) correspond to the torque as a function of the position, for a current of respectively - 1.5, - 1 and - 0.5 amps.
- the cylinder head (35) has a cylindrical housing (38) provided with a bearing (39).
- the stato ⁇ que part (1) has a bearing (36).
- the positioning and guiding of the cylinder head (35) is ensured by a ball bearing (37) interposed between the two bearings (36, 39)
- the cylinder head (35) is integral with an axis (40) passing through an orifice provided in the base (41).
- This orifice (42) has a section greater than the section of the axis (40) so that this axis is never guided by the staton ⁇ ue part.
- the positioning, and in particular the centering of the axis results solely from the magnetic positioning. by the magnetic cooperation of the main magnet (43) with the stator poles (44), and the limitation of the axial displacement due to the ball bearing (37) the stator poles are excited in known manner by coils (50, 51 ).
- the auxiliary return magnet (45) is bonded to the stator poles.
- Figure 4 shows a top view of 1 actuator previously described.
- the magnetization transitions (52, 53) of the main magnet are angularly offset, in the rest position, relative to the magnetization transitions (54 to 57) of the main magnet.
- FIG. 5 represents another alternative embodiment relating to an actuator with a tubular rotor.
- the actuator is composed of a stator (60) excited by two electric coils (61, 62) defining a cylindrical cavity inside which is placed a rotor (63) having two semi-tubular magnets (64, 65) magnet radially in opposite directions. These magnets (64, 65) are bonded to a yoke (66).
- the stator comprises two semi-tubular auxiliary magnets (66, 67) magnetized radially in opposite directions housed in the central cavity, in the tubular air gap
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9600496 | 1996-01-17 | ||
FR9600496A FR2744559B1 (fr) | 1996-01-17 | 1996-01-17 | Actionneur electromagnetique monophase rotatif a ressort magnetique et vanne electrique mettant en oeuvre un tel actionneur |
PCT/FR1997/000080 WO1997026667A1 (fr) | 1996-01-17 | 1997-01-16 | Actionneur electromagnetique monophase rotatif a ressort magnetique et vanne electrique mettant en oeuvre un tel actionneur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0886875A1 true EP0886875A1 (fr) | 1998-12-30 |
EP0886875B1 EP0886875B1 (fr) | 2008-05-21 |
Family
ID=9488188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97900660A Expired - Lifetime EP0886875B1 (fr) | 1996-01-17 | 1997-01-16 | Actionneur electromagnetique monophase rotatif a ressort magnetique et vanne electrique mettant en oeuvre un tel actionneur |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0886875B1 (fr) |
JP (1) | JP2000503165A (fr) |
AT (1) | ATE396486T1 (fr) |
DE (1) | DE69738708D1 (fr) |
FR (1) | FR2744559B1 (fr) |
WO (1) | WO1997026667A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017005870A1 (fr) | 2015-07-07 | 2017-01-12 | Mmt Sa | Actionneur électromagnétique à entrainement direct |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5828151A (en) * | 1997-08-27 | 1998-10-27 | Cts Corporation | Self aligning actuator with low bearing wear |
FR2997745B1 (fr) | 2012-11-06 | 2014-11-07 | Sonceboz Automotive Sa | Vanne motorisee surmoulee a etancheite amelioree |
CN109764221B (zh) * | 2017-08-31 | 2021-04-27 | 北京影谱科技股份有限公司 | 一种云台 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4596970A (en) * | 1984-12-21 | 1986-06-24 | Pneumo Corporation | Limited angle torque motor with high stiffness and natural frequency |
DE3908545C2 (de) * | 1989-03-16 | 1995-01-05 | Vdo Schindling | Verstellantrieb für eine Drosselklappe eines Verbrennungsmotors |
FR2670629B1 (fr) * | 1990-12-17 | 1995-03-10 | Moving Magnet Tech | Actionneur electromagnetique monophase rotatif. |
JP2573859Y2 (ja) * | 1991-11-21 | 1998-06-04 | 株式会社ハーモニック・ドライブ・システムズ | 電磁式有限回転型電動機の原点復帰機構 |
FR2688105B1 (fr) * | 1992-02-28 | 1994-05-06 | Moving Magnet Technologies Sa | Actionneur rotatif electromagnetique monophase de course entre 60 et 120 degres. |
US5337030A (en) * | 1992-10-08 | 1994-08-09 | Lucas Industries, Inc. | Permanent magnet brushless torque actuator |
-
1996
- 1996-01-17 FR FR9600496A patent/FR2744559B1/fr not_active Expired - Fee Related
-
1997
- 1997-01-16 DE DE69738708T patent/DE69738708D1/de not_active Expired - Lifetime
- 1997-01-16 EP EP97900660A patent/EP0886875B1/fr not_active Expired - Lifetime
- 1997-01-16 WO PCT/FR1997/000080 patent/WO1997026667A1/fr active IP Right Grant
- 1997-01-16 JP JP9508717A patent/JP2000503165A/ja active Pending
- 1997-01-16 AT AT97900660T patent/ATE396486T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9726667A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017005870A1 (fr) | 2015-07-07 | 2017-01-12 | Mmt Sa | Actionneur électromagnétique à entrainement direct |
Also Published As
Publication number | Publication date |
---|---|
DE69738708D1 (de) | 2008-07-03 |
FR2744559B1 (fr) | 1998-04-10 |
FR2744559A1 (fr) | 1997-08-08 |
WO1997026667A1 (fr) | 1997-07-24 |
JP2000503165A (ja) | 2000-03-14 |
ATE396486T1 (de) | 2008-06-15 |
EP0886875B1 (fr) | 2008-05-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0974185B1 (fr) | Actionneur lineaire ameliore | |
EP0992658B1 (fr) | Actionneur électromagnétique de soupape | |
EP2792057B1 (fr) | Actionneur electromagnétique | |
EP0829129B1 (fr) | Actionneur electromagnetique presentant au moins deux positions stables par verrouillage magnetique | |
FR2761518A1 (fr) | Moteur planaire magnetique et micro-actionneur magnetique comportant un tel moteur | |
EP1185995B1 (fr) | Dispositif de commande d'ouverture et/ou de fermeture, en particulier pour un appareil de coupure tel un disjoncteur, et disjoncteur equipe d'un tel dispositif | |
EP1174595A1 (fr) | Actionneur de soupapes de moteurs à combustion interne | |
EP1450011B1 (fr) | Actionneur électromécanique de commande de soupape pour moteur interne et moteur à combustion interne muni d'un tel actionneur | |
EP0886875B1 (fr) | Actionneur electromagnetique monophase rotatif a ressort magnetique et vanne electrique mettant en oeuvre un tel actionneur | |
EP1450013B1 (fr) | Actionneur électromécanique de soupape pour moteur à combustion interne et moteur à combustion interne muni d'un tel actionneur | |
CA3197790A1 (fr) | Actionneur electromagnetique bistable et valve de frein d'aeronef equipee d'un tel actionneur | |
EP0042884A1 (fr) | Moteur magnétique à excitation électromagnétique | |
EP3939151B1 (fr) | Dispositif electromagnetique | |
EP3729618B1 (fr) | Actionneur a entrainement direct commandé en boucle ouverte | |
WO2024115606A1 (fr) | Moteur diphasé à encombrement réduit | |
EP1298776A1 (fr) | Actuateur rotatif | |
FR2799302A1 (fr) | Actionneur electrique notamment pour soupape de moteur de vehicule automobile | |
FR2756660A1 (fr) | Actionneur electromagnetique pour le deplacement en rotation d'un organe mobile sur une course limitee | |
FR2812121A1 (fr) | Actionneur lineaire electromagnetique de soupape comportant une seule bobine | |
CH709018A2 (fr) | Dispositif régulateur magnétique et mouvement horloger comprenant un tel dispositif. | |
FR2848739A1 (fr) | Dispositif d'entrainement en rotation | |
FR2888627A1 (fr) | Dispositif de commande d'une boite de vitesses, en particulier pour vehicule automobile | |
FR2633694A1 (fr) | Vanne rotative a commande electrique | |
FR2987934A1 (fr) | Actionneur electromagnetique |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19980710 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
17Q | First examination report despatched |
Effective date: 19991006 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69738708 Country of ref document: DE Date of ref document: 20080703 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ABREMA AGENCE BREVET ET MARQUES, GANGUILLET |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080901 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080821 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20081021 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20090224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090131 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080521 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080822 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090116 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20151217 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20151222 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20151217 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69738708 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |