EP0513266A1 - Actuateur rotatif - Google Patents

Actuateur rotatif

Info

Publication number
EP0513266A1
EP0513266A1 EP91919841A EP91919841A EP0513266A1 EP 0513266 A1 EP0513266 A1 EP 0513266A1 EP 91919841 A EP91919841 A EP 91919841A EP 91919841 A EP91919841 A EP 91919841A EP 0513266 A1 EP0513266 A1 EP 0513266A1
Authority
EP
European Patent Office
Prior art keywords
stator
permanent magnet
claw poles
rotor
poles
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
Application number
EP91919841A
Other languages
German (de)
English (en)
Inventor
Harald Kalippke
Friedrich Wendel
Erhard Renninger
Johannes Meiwes
Albert Gerhard
Dieter Dick
Herbert Becker
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0513266A1 publication Critical patent/EP0513266A1/fr
Ceased legal-status Critical Current

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
    • H01F7/14—Pivoting armatures
    • H01F7/145—Rotary electromagnets with variable gap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M2003/067—Increasing idling speed the valve for controlling the cross-section of the conduit being rotatable, but not being a screw-like valve

Definitions

  • the invention relates to a rotary actuator
  • the two stator poles are formed asymmetrically with a widely differing pole width, seen in the circumferential direction, to generate the magnetic restoring torque when the servomotor is de-energized.
  • the rotor poles designed as shell-shaped magnetic segments are arranged asymmetrically on the rotor and each extend over a circumferential angle of greater than 90 °, the pole width of the stator pole with the smaller pole width measured in the circumferential direction being approximately equal to the extension angle of the rotor poles.
  • the stator winding encompasses a magnetic return yoke as a solenoid, that connects the two stator poles to each other. Such a turntable is because of the strong asymmetry
  • the rotary actuator according to the invention with the characterizing features of claim 1 has the advantage of a servomotor that is simple to manufacture in terms of production and has a compact design, the magnetic cogging torque of which is sufficiently large to move the throttle element into a defined minimum opening cross section when the actuator is de-energized
  • the servomotor is robust and less prone to failure.
  • Throttle body in which the released
  • Opening cross-section of the flow line is zero, and the end position of the throttle body, in which the released opening cross-section of the flow line is maximum.
  • the magnetic detent on the pole gaps between the two claw poles of the rotor that is to say its magnetic return torque when the stator winding is de-energized, can be strengthened if, according to a first embodiment of the invention, arc-shaped recesses are made in the central region of the front connections of the claw poles and the ring jacket. This will reduce the cross section in the magnetic
  • the magnetic detent on the pole gaps can also be strengthened in that according to a preferred
  • Air gap width in the central area of the claw poles is larger than in the peripheral areas of the claw poles as seen in the circumferential direction.
  • Embodiment of the invention used as a magnetic material hard ferrite or plastic-bonded ferrite or plastic-bonded neodyn-iron-boron. Compared to the rare earth magnetic material, a significant reduction in the rare earth magnetic material.
  • the rotor can one
  • Magnetic segments run from the outside to the inside in one magnet segment and from the inside to the outside in the other magnet segment. The attachment of the permanent magnet or the
  • stator consists of two identical designs
  • Stator parts each with a claw pole, which are in a parting plane oriented perpendicular to the stator axis after relative rotation in the parting plane and relative rotation in Relative rotation in the parting plane and relative rotation in a rotating plane, which is along the stator axis and
  • Fig. 1 shows a longitudinal section of a turntable for a
  • Fig. 2 is a schematic exploded view of a
  • Fig. 3 is a view of the turntable in the direction
  • Fig. 4 shows the same representation as Fig. 3 des
  • the rotary actuator shown in longitudinal section in FIG. 1 serves to control the opening cross section of a bypass line 10 around a schematically illustrated throttle valve 11 in the intake manifold 12 of an internal combustion engine for the purpose of idle speed control.
  • the rotary actuator has an actuator housing 13 made of plastic, in which an elongated flow channel 17 is formed, the opening cross section of which can be controlled by a throttle element 14 designed as a rotary slide valve.
  • the throttle element 14 is actuated by a servomotor 15, which in one Motor housing 16 is housed.
  • the motor housing 16 is attached to the actuator housing 13 at right angles to the axis thereof, the throttle element 14 with a control part 141 penetrating the flow channel 17 transversely through an arcuate opening 131 in the actuator housing 13.
  • the servomotor 15 consists, in a known manner, of a stator 18 with a stator winding 19 held on the motor housing 16 and a permanent magnet rotor 20 coaxial with the stator 18, which is non-rotatably seated on a rotor shaft 21, which in turn is located in bearings 22, 23 on the actuator housing 13 or on the motor housing 16 is rotatably mounted.
  • the throttle element 14 is seated with a fastening part 142 in a rotationally fixed manner on the rotor shaft 21
  • Throttle element 14 with control part 141 and fastening part 142 is made in one piece from plastic, the fastening to the rotor shaft 21 being carried out by injection molding onto the rotor shaft 21 when the throttle element 14 is sprayed off.
  • stator 18 On the stator 18 are two in the circumferential direction by 180 °
  • Ring jacket 26 are connected for the magnetic yoke.
  • a stator winding 19 which is designed as an annular coil and which is on a coil carrier 36 made of plastic
  • stator 18 is made from two identically designed stator parts 181 and 182, which is particularly illustrated by FIG. 2. The two stator winding 19 with the coil carrier 36, the stator 18 is made from two identically designed stator parts 181 and 182, which is particularly illustrated by FIG. 2. The two stator winding 19 with the coil carrier 36, the stator 18 is made from two identically designed stator parts 181 and 182, which is particularly illustrated by FIG. 2. The two stator winding 19 with the coil carrier 36.
  • Stator parts 181, 182 are at right angles to the stator axis
  • stator 28 has been rotated through 180 ° with respect to the first stator part 181 and, on the other hand, has additionally been rotated through 180 ° with respect to the first stator part 181, which extends along the stator axis 27 at right angles to the parting plane 28.
  • the assembled stator 28 can be seen in FIG. 1, the different stator parts being shown
  • FIG. 1 The front view of the stator 18 and rotor 20 in the direction of arrow III in FIG. 2 is shown in FIG.
  • the rotor 20 carries a cylindrical permanent magnet 29 with a diametrical magnetization direction, as shown schematically in FIG. 3.
  • a magnetic material As a magnetic material
  • plastic-bound neodyn-iron-boron is used.
  • Permanent magnet 29 is pushed with a central axial bore 30 over the rotor shaft 21 and is injected into the rotor shaft 21 during the injection process of the throttle member 14 by plastic encapsulation, so that the permanent magnet 29 sits on the rotor shaft 21 in a rotationally fixed manner.
  • Throttle body 14 a predetermined minimum
  • Opening cross-section in the flow channel 17 of the actuator housing 13 must be, by appropriate dimensioning of the magnetic resistances in the magnetic yoke a latching of the rotor 20 on the pole gaps 31.32 between the claw poles 24.25 with de-energized stator winding 19th
  • the throttle element 14 is then attached to the rotor shaft 21 in association with the rotor 20 in such a way that it releases the desired minimum opening cross section in the flow channel 17.
  • a strong detent of the rotor 20 on the pole gaps 31, 32 is achieved in that an arcuate recess 33 or 34 is made in each case in the central region of the connections of the claw poles 24, 25 to the ring jacket 26 in the central region. Due to the arcuate recesses 33, 34
  • the stator winding 19 is supplied with a direct current with reversible current direction. This can be caused, for example, by the fact that the
  • Stator winding 19 is connected via a connector 35 which is integrally formed on the plastic motor housing 16 to an output stage which can supply both current directions.
  • the strong latching of the rotor 20 is on the
  • Pole gaps 31, 32 are achieved by reducing the air gap 37 at the edges of the claw poles 24, 25.
  • Air gap width in the central area of the claw poles 24, 25 is larger than in the two peripheral areas of the claw poles 24, 25 seen in the circumferential direction. With that they are
  • Stator winding 19 leads. However, you have to accept a limited adjustment angle of the rotor 20, which in
  • each shell-shaped permanent magnet segment fastened on a cylindrical carrier, each with a radial direction of magnetization.
  • the direction of magnetization of one magnet segment on the rotor points from the outside inwards and that of the other magnet segment points from the inside Outside.
  • the cylindrical support for the magnet segments is connected to the rotor shaft in a rotationally fixed manner.
  • the magnetic segments are in turn attached to the carrier by

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Un actuateur rotatif pour le réglage de l'angle de rotation d'éléments de réglage, en particulier d'un organe d'étranglement pour moteurs à combustion interne déterminant la section de passage d'une conduite d'écoulement, présente un moteur électrique de commande avec un stator bipolaire (18) et un rotor bipolaire à aimant permanent (20). Pour obtenir un moteur de commande robuste, compact et de fabrication simple, les pôles du stator sont conçus sous forme de pôles à griffes (24, 25) et l'enroulement du stator est disposé en tant que bobine toroïdale dans un espace annulaire délimité par les pôles à griffes (24, 25) et une enveloppe annulaire (26), disposée dans le même axe, pour le retour magnétique. L'enroulement du stator est exposé à un courant continu dont la direction peut être inversée. Les résistances magnétiques du retour magnétique disposées transversalement par rapport aux pôles à griffes (24, 25) ont des dimensions telles que le rotor (20) à aimant permanent, s'enclenche dans les espaces (31, 32) entre les pôles à griffes (24, 25) lorsque l'enroulement (19) du stator ne reçoit pas de courant.
EP91919841A 1990-12-05 1991-11-16 Actuateur rotatif Ceased EP0513266A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4038760A DE4038760A1 (de) 1990-12-05 1990-12-05 Drehsteller
DE4038760 1990-12-05

Publications (1)

Publication Number Publication Date
EP0513266A1 true EP0513266A1 (fr) 1992-11-19

Family

ID=6419633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91919841A Ceased EP0513266A1 (fr) 1990-12-05 1991-11-16 Actuateur rotatif

Country Status (5)

Country Link
US (1) US5234192A (fr)
EP (1) EP0513266A1 (fr)
JP (1) JPH05503205A (fr)
DE (1) DE4038760A1 (fr)
WO (1) WO1992010664A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4329522A1 (de) * 1993-09-02 1995-03-09 Mann & Hummel Filter Drosseleinrichtung
DE4401585C2 (de) * 1994-01-20 1998-10-29 Mann & Hummel Filter Drosseleinrichtung
GB2290911A (en) * 1994-06-28 1996-01-10 Dafydd Roberts Rotary electromagnetic actuator
US6080352A (en) * 1994-07-11 2000-06-27 Seagate Technologies, Inc. Method of magnetizing a ring-shaped magnet
JP3280536B2 (ja) * 1995-02-21 2002-05-13 株式会社ミクニ アクチュエータ
US5562081A (en) * 1995-09-12 1996-10-08 Philips Electronics North America Corporation Electrically-controlled throttle with variable-ratio drive
US5842680A (en) * 1997-09-11 1998-12-01 Cts Corporation Actuator using magnetic forces to reduce frictional forces
DE19934382A1 (de) * 1999-07-22 2001-02-01 Bosch Gmbh Robert Flüssigkeitspumpe
DE19956380C1 (de) * 1999-11-24 2001-01-04 Bosch Gmbh Robert Flüssigkeitspumpe mit einem Motorgehäuse und Verfahren zur Herstellung eines Motorgehäuses
US7107970B2 (en) * 2002-12-18 2006-09-19 Siemens Vdo Automotive Inc. Fuel vapor purge control assembly and methods of assembling and controlling same
JP2006074884A (ja) * 2004-09-01 2006-03-16 Keihin Corp トルクモータ
WO2014198326A1 (fr) * 2013-06-14 2014-12-18 Pierburg Pump Technology Gmbh Pompe de liquide de refroidissement dotée d'un aimant lié à du plastique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56115508A (en) * 1980-02-15 1981-09-10 Nippon Soken Inc Proportional solenoid
JPS58212361A (ja) * 1982-06-01 1983-12-10 Nippon Soken Inc 回転駆動装置
DE3830114A1 (de) * 1988-09-05 1990-03-15 Bosch Gmbh Robert Elektrischer drehsteller
DE3908545C2 (de) * 1989-03-16 1995-01-05 Vdo Schindling Verstellantrieb für eine Drosselklappe eines Verbrennungsmotors
US4976237A (en) * 1989-07-10 1990-12-11 Carter Automotive Company Engine air intake valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9210664A1 *

Also Published As

Publication number Publication date
DE4038760A1 (de) 1992-06-11
WO1992010664A1 (fr) 1992-06-25
JPH05503205A (ja) 1993-05-27
US5234192A (en) 1993-08-10

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