EP0216943B1 - Elektromagnetische Betätigungsvorrichtung, insbesondere für Druckhammerantriebe - Google Patents

Elektromagnetische Betätigungsvorrichtung, insbesondere für Druckhammerantriebe Download PDF

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Publication number
EP0216943B1
EP0216943B1 EP19850109847 EP85109847A EP0216943B1 EP 0216943 B1 EP0216943 B1 EP 0216943B1 EP 19850109847 EP19850109847 EP 19850109847 EP 85109847 A EP85109847 A EP 85109847A EP 0216943 B1 EP0216943 B1 EP 0216943B1
Authority
EP
European Patent Office
Prior art keywords
clapper armature
armature
center leg
magnetic flux
electromagnet
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
Application number
EP19850109847
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0216943A1 (de
Inventor
Armin Bohg
Ludwig Fischer
Bruno Gantz
Kurt Hartmann
Gerhard Wolfert
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.)
IBM Deutschland GmbH
International Business Machines Corp
Original Assignee
IBM Deutschland GmbH
International Business Machines Corp
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 IBM Deutschland GmbH, International Business Machines Corp filed Critical IBM Deutschland GmbH
Priority to EP19850109847 priority Critical patent/EP0216943B1/de
Priority to DE8585109847T priority patent/DE3574072D1/de
Priority to CA000503282A priority patent/CA1249625A/en
Priority to ES1986297044U priority patent/ES297044Y/es
Priority to JP15812786A priority patent/JPS6235857A/ja
Priority to BR8603482A priority patent/BR8603482A/pt
Priority to AR30481186A priority patent/AR242683A1/es
Publication of EP0216943A1 publication Critical patent/EP0216943A1/de
Application granted granted Critical
Publication of EP0216943B1 publication Critical patent/EP0216943B1/de
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to an electromagnetic actuating device with a swivel armature and an electromagnet, which is characterized in the preamble of claim 1.
  • This actuating device is preferably suitable for use with impact printers. It combines the advantages of two different principles of known electromagnetic actuation devices: the principle of conventional swivel armature electromagnets and the principle of a drive described in EP-A 021 335.
  • This drive relates to a fast, electromagnetically actuated plunger drive, which can be used in particular for impact printers.
  • the electromagnet basically consists of essentially symmetrically constructed magnetizable yoke halves with a corresponding excitation coil (s). The facing pole ends of the yoke halves form aligned magnetic working gaps. A plunger which is displaceable in the direction of the line of alignment of the working gaps is arranged between the magnetic working gaps.
  • the cross section of the ram is adapted to the area of the working column. It can be cylindrical or cuboid. It contains e.g. B. disc-shaped or cuboid anchor elements made of magnetizable material and spacing elements arranged between them made of predominantly non-magnetizable material.
  • the anchor elements have such a geometric design that their volume is in the order of the working gap volume.
  • the armature elements are essentially in front of the working gaps when the electromagnets are not excited. When the electromagnet is excited, they are drawn into this working gap and experience an acceleration.
  • Tappet drives of this type have the disadvantage that they are very sensitive to asymmetrical lateral forces.
  • the pivot armature 1 moves when the electromagnet is excited in the direction of arrow D. It performs a pivoting movement about its pivot axis 10.
  • the plane of movement 1A of the swivel armature 1 is perpendicular to the magnetic flux plane 4A of the yoke structure 4 of the electromagnet 2.
  • the yoke structure seen in the magnetic flux plane 4A has an E-shaped cross section with two outer 5 and 6, a middle leg 7 and one common to all legs Base 8 on.
  • the pole face 7A of the middle leg 7 encompassed by the excitation coil 3 faces the pivot armature 1.
  • the free ends of the outer legs 5 and 6 are angled towards each other in such a way that a magnetic working gap 9 is formed between their pole faces 5A and 6A.
  • the pole face 7A of the middle leg 7 can be outside or inside the working gap 9.
  • the swivel armature 1 When the electromagnet 2 is excited, the swivel armature 1 is drawn into the working gap 9 and is increasingly attracted to the pole face 7A of the middle leg 7.
  • the magnetic flux of the middle leg runs essentially in half over the pivot armature 1 to a respective pole face 5A, 6A of the outer legs 5 and 6.
  • the width B of the pivot armature 1 is significantly (at least twice) smaller than its length between the pivot axis 10 and the working gap 9.
  • the magnetic flux passing through the actuator is represented by a plurality of lines of magnetic flux 4B. The closer these lines run, the stronger the local magnetic flux density.
  • the yoke structure and swivel anchor are arranged essentially symmetrically to the plane of movement 1A of the swivel anchor running through the center of the middle leg 7.
  • the end of the movement of the swivel armature can be designed accordingly for switching stroke or impact processes.
  • FIG. 2 shows an exploded perspective view of the electromagnetic actuation device according to the invention for use in impact printers.
  • This unit essentially consists of 5 parts: the base part 21 made of soft magnetic material, the solenoid coil 25 to be inserted into the base part 21, two yoke strips 23 and 24 to be fastened on the base part and the pivot armature 22 also to be connected to the base part.
  • the base part has a recess 21-1 and one in the Recess middle leg 21-2 with the pole face 21-3. The recess serves to accommodate the electromagnetic coil 25.
  • the yoke strips 23 and 24 are indicated in FIG. B. connected by screw, weld or similar connections, edge to the base part.
  • the working gap lies between their pole faces 23-1, 24-1.
  • the pivot anchor 22 itself is fixed at one end on a slope of a block 26.
  • the block 26 is arranged in the front region of the base part 21 in a recess 21-4. Both recesses 21-1 and 21-4 merge. As a result, the coil connections 40 can be led out in a simple manner.
  • the part of the swivel anchor near the fixing end is formed by a leaf spring 22-2. It enables a corresponding swiveling movement when the swivel armature is pulled into the working gap when the electromagnet is excited.
  • the pivot armature has a cutout 22-4 in order to be able to interact with a pressure tappet 29, which is only indicated by lines (to generate a tappet movement in the direction P).
  • the inner edges of the yoke strips 23 and 24 can beveled 23-2, 24-2 for reasons of a special design of the working gap.
  • Fig. 3 shows a sectional view according to the section plane A-A in Fig. 2 to show the magnetic flux profile in the magnetic yoke structure and the pivot armature.
  • the magnetic flux lines 30 are shown by thinner solid lines. The closer these lines run, the closer the magnetic flux is.
  • the sectional view shows a moment in which the armature 22-3 has already been partially drawn into the working gap 27. The forces occurring in a first phase of pulling into the working gap are primarily due to the attractive forces between the side surfaces 22-4 and 22-5 of the pivot armature 22-3 and the pole surfaces 23-1 and 24-1 (between which the Working gap forms) determined. This principle of an electromagnetic drive is known from EP-A 021 335 already mentioned at the beginning.
  • the arrangement according to the invention combines the advantages of an electromagnetic actuation device according to EP-A 021 335 and conventional known pivot armature systems.
  • FIG. 3 show sectional representations in analogy to FIG. 3 with different cross-sectional shapes for the swivel armature and the magnetic yoke structure.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Impact Printers (AREA)
  • Electromagnets (AREA)
EP19850109847 1985-08-06 1985-08-06 Elektromagnetische Betätigungsvorrichtung, insbesondere für Druckhammerantriebe Expired EP0216943B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP19850109847 EP0216943B1 (de) 1985-08-06 1985-08-06 Elektromagnetische Betätigungsvorrichtung, insbesondere für Druckhammerantriebe
DE8585109847T DE3574072D1 (en) 1985-08-06 1985-08-06 Electromagnetic actuator, in particular for driving print hammers
CA000503282A CA1249625A (en) 1985-08-06 1986-03-04 Electromagnetic actuator mechanism in particular for print hammer drives
ES1986297044U ES297044Y (es) 1985-08-06 1986-06-17 Un mecanismo accionador electromagnetico para la conmutacion de movimientos de golpe e impacto
JP15812786A JPS6235857A (ja) 1985-08-06 1986-07-07 電磁アクチユエ−タ機構
BR8603482A BR8603482A (pt) 1985-08-06 1986-07-24 Mecanismo ativador eletromagnetico destinado em particular a acionamentos de martelo impressor
AR30481186A AR242683A1 (es) 1985-08-06 1986-08-06 Mecanismo accionador electromagnetico de conmutacion de movimiento de carrera e impacto.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19850109847 EP0216943B1 (de) 1985-08-06 1985-08-06 Elektromagnetische Betätigungsvorrichtung, insbesondere für Druckhammerantriebe

Publications (2)

Publication Number Publication Date
EP0216943A1 EP0216943A1 (de) 1987-04-08
EP0216943B1 true EP0216943B1 (de) 1989-11-02

Family

ID=8193667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850109847 Expired EP0216943B1 (de) 1985-08-06 1985-08-06 Elektromagnetische Betätigungsvorrichtung, insbesondere für Druckhammerantriebe

Country Status (7)

Country Link
EP (1) EP0216943B1 (enrdf_load_html_response)
JP (1) JPS6235857A (enrdf_load_html_response)
AR (1) AR242683A1 (enrdf_load_html_response)
BR (1) BR8603482A (enrdf_load_html_response)
CA (1) CA1249625A (enrdf_load_html_response)
DE (1) DE3574072D1 (enrdf_load_html_response)
ES (1) ES297044Y (enrdf_load_html_response)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996041947A1 (en) * 1995-06-08 1996-12-27 Siemens Automotive Corporation Method of adjusting a solenoid air gap
US5617067A (en) * 1995-12-07 1997-04-01 Eaton Corporation Electromagnetic actuator having a low aspect ratio stator
FR2801721B1 (fr) * 1999-11-29 2002-01-18 Schneider Electric Ind Sa Electroaimant a courant continu pour appareil interrupteur
MY124946A (en) 2000-10-23 2006-07-31 Senju Metal Industry Co Automatic wave soldering apparatus and method
EP1948548B1 (en) * 2005-10-11 2013-01-09 Otis Elevator Company Electromagnet and elevator door coupler
CN106763994B (zh) * 2017-02-28 2022-11-25 浙江工业大学 线圈外置式斜翼力矩马达

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348556A (en) * 1941-11-05 1944-05-09 Allen Bradley Co Magnet structure
US2999193A (en) * 1958-09-24 1961-09-05 Olympia Werke Ag Actuator magnet assembly
FR1236085A (fr) * 1959-06-04 1960-07-15 Procédé de construction des circuits magnétiques
US3524155A (en) * 1968-01-02 1970-08-11 Honeywell Inc Slotted-pole solenoid
DD111119A1 (enrdf_load_html_response) * 1973-07-17 1975-01-20
DE2458516A1 (de) * 1974-12-11 1976-06-16 Teves Gmbh Alfred Elektromagnetische betaetigungseinrichtung
JPS54130225A (en) * 1978-03-29 1979-10-09 Hitachi Ltd Printer
DE3024059A1 (de) * 1980-06-26 1982-01-07 Knorr-Bremse GmbH, 8000 München Elektro-hubmagnet

Also Published As

Publication number Publication date
EP0216943A1 (de) 1987-04-08
ES297044U (es) 1988-04-16
JPH0533666B2 (enrdf_load_html_response) 1993-05-20
CA1249625A (en) 1989-01-31
AR242683A1 (es) 1993-04-30
JPS6235857A (ja) 1987-02-16
DE3574072D1 (en) 1989-12-07
BR8603482A (pt) 1987-03-04
ES297044Y (es) 1988-12-01

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