EP0607378B1 - Stellantrieb zur drehwinkelverstellung eines stellgliedes - Google Patents

Stellantrieb zur drehwinkelverstellung eines stellgliedes Download PDF

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Publication number
EP0607378B1
EP0607378B1 EP93914632A EP93914632A EP0607378B1 EP 0607378 B1 EP0607378 B1 EP 0607378B1 EP 93914632 A EP93914632 A EP 93914632A EP 93914632 A EP93914632 A EP 93914632A EP 0607378 B1 EP0607378 B1 EP 0607378B1
Authority
EP
European Patent Office
Prior art keywords
stator
pole
winding
opening
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.)
Expired - Lifetime
Application number
EP93914632A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0607378A1 (de
Inventor
Friedrich Wendel
Manfred Franz
Johannes Meiwes
Uwe Hammer
Michael Altmann
Dieter Dick
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 EP0607378A1 publication Critical patent/EP0607378A1/de
Application granted granted Critical
Publication of EP0607378B1 publication Critical patent/EP0607378B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 for controlling an opening cross section of a flow line for internal combustion engines according to the preamble of claim 1 or 2.
  • a stepper motor according to US-A-4,398,107 is already known, in which the stator has a yoke with two legs. A pole extends from each leg and partially surrounds a through-opening which receives a rotor. The poles are separated from each other by weak points. Outside the area of the weak points, the contour of the through opening is designed by constrictions or extensions such that the magnetic orientation of the rotor is at an angle to the weak points and, regardless of excitation by a positive or negative impulse, always one step in the same direction of rotation Rotates 180 ° further.
  • an actuator according to WO-A-90/02870 in which a rotor is partially enclosed in the circumferential direction by a stator provided with asymmetrically designed pole shoes, into which a magnetic field can be induced via an excitation winding. Since the stator in this solution is either designed in two parts or the excitation winding must be applied directly to the stator and due to the asymmetrical design of the stator poles, this solution is associated with a complex manufacturing process that is very costly, especially in series production.
  • the actuator according to the invention with the characterizing features of claim 1 or 2 has the advantage that the stator surrounding the rotor is made in one piece, thereby ensuring simple insertion of the excitation winding into the stator. This is achieved in that the stator completely surrounds the rotor and the field winding between two on the outside the stator trained legs is used. In addition, the formation of weak points in the stator poles enables optimization of the torque / angle of rotation characteristic of the actuator. It is particularly advantageous to produce the stator from individual laminations, each of which has cutouts and / or separation points in the area of the poles and which are assembled to form a one-piece stator package. The magnetic properties of the stator are influenced as desired, in particular by the laminations having separating points, while the cohesion of the stator package is retained via the laminations having cutouts, and production-friendly further processing is thus ensured.
  • FIG. 1 shows a longitudinal section through a rotary actuator designed according to the invention
  • FIG. 2 shows a section along the line II-II in FIG. 1.
  • FIG. 1 shows a rotary actuator for controlling the opening cross section of a flow line carrying a medium for internal combustion engines.
  • a rotary actuator of this type is used, for example, to regulate the idle speed of the internal combustion engine and is arranged in a bypass line bridging a throttle valve.
  • the rotary actuator is made of an actuator labeled 1 and an actuator housing 22 assembled.
  • the actuator 1 has a drive housing 2 made of plastic, which encloses a stator 3 consisting, for example, of laminations 6 and a winding 5 arranged around an induction core 4.
  • a holding body 9 which has a bore 10 into which one end of an axis 11 is inserted.
  • a carrier body 17 On the axis 11, which is fixed on the other hand in the actuator housing 22, for example by overmolding, a carrier body 17 is rotatably mounted, for example, via a roller bearing 15 and a sliding seat 16. In the circumferential direction, the carrier body 17 is surrounded by a diametrically magnetized permanent magnet 18 and a control member 19, the parts 17 and 18 together forming a rotor 14 of the actuator 1, which rotates the control member 19.
  • a control arm 23 is formed which protrudes into a control chamber 25 located in the actuator housing 22 and whose outer surface 24 is shaped such that it corresponds as closely as possible to the inside diameter of a control window, not shown in the drawing, of a flow opening opening into the control chamber 25 and depending on the angle of rotation of the rotor 14 more or less the flow opening.
  • the drive housing 2 and the actuator housing 22 are positively connected in the axial direction via a bayonet connection 28 and clamped without play with the aid of a spring washer 29.
  • a disk 30 located on the axis 11 between the actuator housing 22 and the carrier body 17 ensures that the rotor 14 can be rotated with little friction.
  • FIG. 2 shows a section along the line II-II in FIG. 1.
  • the carrier body 17 On the axis 11 is the carrier body 17, on which the permanent magnet 18 is arranged concentrically and which is enclosed by the stator 3 in the circumferential direction.
  • the stator 3 has a through opening 13 into which the rotor 14 projects.
  • a yoke 35 is formed which has two legs 38, 39 which run approximately parallel to one another and between which an induction core 4 is inserted in a known manner, for example via a dovetail connection 36.
  • the poles 33, 34 encircle the rotor 14 in such a way that a pole 33 connects the two legs 38 and 39 on the side of the passage opening 13 facing the induction core 4 and a pole 34 lies on the side of the rotor 14 facing away from the induction core 4.
  • the induction core 4 is surrounded by at least one winding 5, to which a voltage can be applied via plug elements 37.
  • the weak points 40 are advantageously arranged opposite one another.
  • Each recess 41 is characterized by a reduction in the cross-sectional area of the stator 3 in the radial direction in the region formed by the poles 33, 34 to a residual cross-section 43, over which there is still a material cohesion.
  • the recesses 41 can take any shape, for example semicircular, groove, groove or ring-shaped and can be opened or closed to the inside or outside of the stator 3.
  • In the embodiment 2 shows semicircular recesses 41 which are open to the outside of the stator 3.
  • each separation point 42 is characterized by a complete separation of the cross-sectional area of the stator 3 in the area formed by the poles 33, 34 in the radial direction.
  • each metal plate 6 When the stator 3 is formed by means of metal plates 6, more than one separation point 42 can be formed on each metal plate 6, so that each metal plate 6 consists of several parts.
  • an alternating layering of sheet metal laminations 6, which have separation points, is provided.
  • a sheet metal plate 6 with separating points 42 can be arranged between two sheet metal plates 6 with cutouts 41, but several sheet metal plates 6 with separating points 42 can also be located between two sheet metal plates 6 with cutouts.
  • two sheet metal lamellae 6 with separation points 42 are each arranged by way of example between two sheet metal lamellae 6 with cutouts 41.
  • the alternately layered laminations 6 are packaged in a known manner, for example by pressing, to form a one-piece stator 3.
  • the material cohesion is given by the sheet metal fins 6 which do not have a plurality of separation points 42.
  • the induction core 4 with the winding 5 is inserted into the packaged stator.
  • the drive housing 2 is then formed by extrusion coating with plastic.
  • a voltage to the plug elements 37
  • a magnetic field is induced in the induction core 4 and in the stator 3 by the winding 5, which leads to a rotation of the rotor 14 and thus of the control element 19.
  • the magnetic field is therefore guided over the pole 33 lying between the two legs 38, 39 and the pole 34 lying between the projection of the two legs and facing away from the induction core 4, with the weak point 40, as desired, increasing the effect of the magnetic field over the air gap as desired 12 on the permanent magnet 18 and thus on the rotor 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
EP93914632A 1992-08-11 1993-07-17 Stellantrieb zur drehwinkelverstellung eines stellgliedes Expired - Lifetime EP0607378B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4226548A DE4226548A1 (de) 1992-08-11 1992-08-11 Stellantrieb zur Drehwinkelverstellung eines Stellgliedes
DE4226548 1992-08-11
PCT/DE1993/000630 WO1994004807A1 (de) 1992-08-11 1993-07-17 Stellantrieb zur drehwinkelverstellung eines stellgliedes

Publications (2)

Publication Number Publication Date
EP0607378A1 EP0607378A1 (de) 1994-07-27
EP0607378B1 true EP0607378B1 (de) 1997-03-05

Family

ID=6465305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93914632A Expired - Lifetime EP0607378B1 (de) 1992-08-11 1993-07-17 Stellantrieb zur drehwinkelverstellung eines stellgliedes

Country Status (7)

Country Link
US (1) US5554901A (pt)
EP (1) EP0607378B1 (pt)
JP (1) JPH07500240A (pt)
BR (1) BR9305601A (pt)
DE (2) DE4226548A1 (pt)
ES (1) ES2098756T3 (pt)
WO (1) WO1994004807A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443618C5 (de) * 1993-12-17 2004-02-05 Siemens Ag Winkelstellantrieb
US6240735B1 (en) 2000-02-18 2001-06-05 Robertshaw Controls Company Rotary damper assembly
US6302747B1 (en) 2000-05-02 2001-10-16 Buehler Products, Inc. Two-position (on-off) actuator with modular connector
JP2003077722A (ja) * 2001-08-31 2003-03-14 Mitsubishi Electric Corp 積層コアの形成方法および電磁式バルブ駆動装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1538196A (en) * 1921-12-06 1925-05-19 Safety Car Heating & Lighting Construction for dynamo-electric machines
US2323114A (en) * 1942-02-26 1943-06-29 Gen Motors Corp Pole piece assembly
FR2263632B1 (pt) * 1974-03-07 1980-08-14 Seiko Instr & Electronics
US4262353A (en) * 1978-09-07 1981-04-14 Kabushiki Kaisha Suwa Seikosha Transducer for electronic timepiece
DE3039521A1 (de) * 1980-10-20 1982-05-19 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtung zur regelung der leerlaufdrehzahl von otto-motoren, insbesondere von kraftfahrzeugmotoren
US4618792A (en) * 1984-09-26 1986-10-21 Westinghouse Electric Corp. Dynamoelectric machine with a laminated pole permanent magnet rotor
DE3830114A1 (de) * 1988-09-05 1990-03-15 Bosch Gmbh Robert Elektrischer drehsteller

Also Published As

Publication number Publication date
JPH07500240A (ja) 1995-01-05
DE4226548A1 (de) 1994-02-17
WO1994004807A1 (de) 1994-03-03
US5554901A (en) 1996-09-10
ES2098756T3 (es) 1997-05-01
BR9305601A (pt) 1994-11-22
EP0607378A1 (de) 1994-07-27
DE59305625D1 (de) 1997-04-10

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