EP0127692A1 - Elément d'actionnement électromagnétique - Google Patents

Elément d'actionnement électromagnétique Download PDF

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Publication number
EP0127692A1
EP0127692A1 EP83105444A EP83105444A EP0127692A1 EP 0127692 A1 EP0127692 A1 EP 0127692A1 EP 83105444 A EP83105444 A EP 83105444A EP 83105444 A EP83105444 A EP 83105444A EP 0127692 A1 EP0127692 A1 EP 0127692A1
Authority
EP
European Patent Office
Prior art keywords
yoke
legs
tappet
working
halves
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
Application number
EP83105444A
Other languages
German (de)
English (en)
Other versions
EP0127692B1 (fr
Inventor
Armin Dipl.-Phys. Bohg
Kurt Hartmann
Horst Dipl.-Ing. Matthaei
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 DE8383105444T priority Critical patent/DE3376912D1/de
Priority to EP83105444A priority patent/EP0127692B1/fr
Priority to JP59075913A priority patent/JPS6037107A/ja
Priority to CA000454198A priority patent/CA1200831A/fr
Priority to US06/615,498 priority patent/US4527139A/en
Publication of EP0127692A1 publication Critical patent/EP0127692A1/fr
Application granted granted Critical
Publication of EP0127692B1 publication Critical patent/EP0127692B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/02—Hammers; Arrangements thereof
    • B41J9/133—Construction of hammer body or tip
    • 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
    • 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
    • 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
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet

Definitions

  • the embodiment of the electromagnetic tappet drive described in German patent application 31 14 834.4 is characterized by yoke halves of an E-shaped cross section, the turns of the coils exciting the yoke halves running essentially between the E legs.
  • the coils are designed as flat coils, which can be attached to the middle E-leg of one half of the yoke.
  • the pole ends of the yoke legs and the anchor webs in the plunger transverse to its drive direction previously had to have a certain dimension (e.g. 10 mm) so that the energy required for printing could be provided for impact printers.
  • FIG. 3 shows a schematic perspective illustration of an electromagnetic pressure tappet drive according to German patent application P 29 26 276.8.
  • a train 28 movable in the direction of arrow D.
  • the stator halves 25 and 22 each consist of a magnetizable yoke 27 and 24, which is surrounded by coil turns 26 and 23, respectively.
  • the stator yokes can e.g. be semicircular, semi-elliptical or U-shaped.
  • the stator yokes 27, 24 in the two stator halves 25 and 22 are aligned such that the respective opposite yoke ends are aligned.
  • the magnetic flux runs from a yoke over a working gap, in which an armature web 20 is arranged, to the yoke of the other stator half and from there via a further working gap back to the first-mentioned yoke, so that the magnetic circuit runs out the two stator yokes and the two working columns located between the ends of the stator yokes.
  • the current flow in the excitation coils 26 and 23 takes place in such a way that the current direction in the windings within the two opposite stator yokes is the same and opposite to that in the winches is outside the stator yokes.
  • di turns are indicated schematically by some wire loops in the front part of the representation, while a corresponding sectional representation of the wires was selected in the rear part.
  • the tongue 28, which is arranged movably in the direction of arrow D between the stator halves 25 and 22, is expanded in the direction of the working gap to be much smaller than in its other two dimensions.
  • the body of the tongue 28 consists of a light, magnetically non-conductive material 19 and magnetically conductive, so-called anchor webs 20 and 21.
  • anchor webs are arranged in the tongue 28 so that when the stator halves are excited from a rest-starting position in the space formed between the stator yokes is drawn in and thereby accelerated. The tongue can then follow a further movement in the direction of arrow D.
  • the design of the anchor webs 20 and 21 is essentially chosen so that their volume would approximately fill the space circumscribed between the ends of the opposite stator yokes.
  • the distance covered by the tongue from the starting position to the position after the end of the acceleration phase (when the anchor bridge is in the working gap) is referred to as the acceleration stroke; the sum of the acceleration stroke and the subsequent further deflection of the tongue in the direction of arrow D as the working stroke.
  • This size depends on the structural boundary conditions and on the means provided for storing the tongue or for returning the tongue to its initial position.
  • return springs can be used: for example two leaf springs, as described in DAS 12 37 816: a spring in cooperation with a slide bearing of the tongue or a return spring in cooperation with a tongue which can be pivoted about an axis.
  • An electromagnetic or permanent magnetic feedback is also possible.
  • FIG. 4 shows an exploded drawing of a pressure ram unit with associated electromagnetic drive units.
  • the tongue-shaped plunger 5 the base body of which is made of plastic, is provided with bores 31 at various points for reasons of weight.
  • the soft iron bars required for the effectiveness of the electromagnetic drive are shown at 60, 61 and 62.
  • the electromagnetic drive units 2-1-2 and 2-1-3 which are fastened on both sides of the frame 2-1 in an aligned form, each contain a magnetic yoke 41 (51) and an associated excitation coil 45 (55).
  • the magnet yoke coil combinations are marked with 40 and 50. Each of these combinations is accommodated in a housing 140, 150 with a corresponding plug connection 141, 151 with contacts 142, 152 for the excitation coils 45 and 55.
  • housings are by means of screws (not shown) or other suitable fastening holes in the housing 150 with 32-1 and 33-1 and designated in the frame 2-1 with 32 and 33.
  • the fastening elements not shown for reasons of clarity, ensure an exact positioning of the electromagnetic drive units, in particular the working gaps in relation to the soft iron webs 6, 19, 20 in the tongue-shaped tappet 5.
  • a magnetizable web must be used stand in front of a working gap when the electromagnets are not excited.
  • the magnet yokes 41 and 51 have an E-shaped cross section.
  • the opposite E-shaped magnet yokes 51 and 41 are aligned so that a total of 3 working gaps are formed by their leg ends 52, 53, 54 and 42, 43, 44: the first working gap is between the leg ends 52 and 42, the second between the Leg ends 53 and 43 and the third between the leg ends 54 and 44.
  • One of the three magnetizable webs 62, 61 and 60 is assigned to each of these working gaps.
  • the excitation winding for each magnetic yoke runs, as shown in FIG.
  • the magnetic yoke coil combination 50 is inserted into a corresponding recess 34 in the housing 150 and is potted there with the plastic housing. The same applies to the magnetic yoke coil combination 40 and the housing 140.
  • the soft iron webs in the pressure tappet 5 should be assigned to the corresponding working gaps of the electromagnets with as little tolerance as possible. This also results in requirements for the most problem-free insertion of the magnetizable webs into the plastic base body of the plunger 5.
  • FIG. 5 shows a structure in which the magnetizable webs 60, 61 and 62 are the same throughout magnetizable material of thinner strength are connected.
  • the webs 60 and 61 are connected via the connection 63 and the webs 61 and 62 via the connection 64.
  • Such connections 63, 64 between the webs are undesirable for optimal operation of the drive. It has been found, however, that with a correspondingly thin strength of these compounds, their disadvantageous influence on the efficiency is only slight and that this influence can be accepted in practice without further ado.
  • This makes it possible to produce the web structure as a coherent part and to simply embed this part in the tongue-shaped plunger 5. Here you only have to take into account the dimensional fit of this one part in the plunger 5 (and not the three individual webs). After this part has been inserted into a corresponding recess in the plunger, it is potted with plastic, and the previously empty recesses (64, 65) of the part are also filled with plastic up to the plunger level.
  • FIG. 6 Another web structure is shown in FIG. 6.
  • the plunger itself is labeled 70, the plunger head again 5-1.
  • the holes for receiving the tension springs (not shown) (see FIG. 4) have the reference number 6 and those material-saving bores have the reference number 31 as in FIG. 4.
  • the web structure 71 itself has the shape of a longitudinally and transversely divided rectangular frame with four openings 72.
  • the frame parts essential for the tappet drive are the webs 73, 74 and 75.
  • the webs 73 and 74 are due to the frame parts 76, 77 and 78 lying transversely thereto made of the same material as the web material;
  • the webs 74 and 75 are transverse to them Frame parts (same material) 79, 80 and 81 connected.
  • the transverse frame parts are narrower and thinner than the webs themselves - the frame openings are encapsulated with plastic up to the ram level.
  • the invention represents a significant improvement of the electromagnetic tappet drive described in German patent application P 31 14 834.4.
  • the weight of this plunger is essentially determined by the weight of the anchor webs 21, 30 (FIG. 3) or 60, 61, 62 (FIG. 4) and the base body in which these anchor webs are embedded.
  • a reduction in the overall height of this tappet would result in a lower mass of the entire pressure tappet, which would meet the demand for an increase in the pressure output.
  • reducing the overall height also means reducing the length of the tie bar. This would reduce the magnetic force effect on the anchor bars, which in turn would result in a reduction in the pressure output.
  • the arrangement according to the invention can e.g. thinking that the middle leg 53 or 43 of the E-shaped magnetic yoke 51 or 41 (Fig. 4) is split into two adjacent yoke legs 100-2, 102-1 (Fig. 1), with a common basis for all thighs are retained (or not).
  • the yoke halves of the yoke half pairs are identified by 100, 101 and 102, 103.
  • the yoke legs of the yoke half 100 are identified by 100-1 and 100 -2; the same applies to the yoke legs 101-1 and 101-2 of the yoke half 101, for the yoke legs 102-1 and 102-2 of the yoke half 102 and for the yoke legs 103-1 and 103-2 of the yoke half 103.
  • Die Yoke halves 100 and 1.02 are adjacent to one another, as are yoke halves 101 and 103.
  • a common excitation coil 104 and 105 is assigned to both adjacent yoke halves 100 and 102 or 101 and 103.
  • This excitation coil 104 designed as a flat coil, is thus applied to the two adjacent yoke halves 100 and 102, so that the yoke legs 100-2 and 102-1 run through their interior.
  • the turns of the excitation coil 104 run between the two yoke legs 100-1 and 100-2 of the yoke half 100 un d the yoke legs 102-1 and 102-2 of the yoke half 102.
  • both adjacent yoke halves 100 and 102 or 101 and 103 a common, continuous basis; in this case a yoke half can be produced as a single sintered part with the 4 legs 100-1, ..., 100-4.
  • the magnetic working gaps lie between the pole ends of opposing yoke legs.
  • the force effect on the plunger is approximately 40% lower for only three working gaps in the first case (FIG. 4) than in the case 1 with four working columns. Taking these results into account, however, it is possible to reduce the overall height of the ram according to FIG. 1 significantly, ie by approximately 25%, in order to reduce the to achieve the same force on the ram. Since this reduction in overall height is also associated with a reduction in the ram weight and smaller masses can be accelerated more easily than large ones, this results in an additional increase in the pressure output.
  • the opposing yoke halves 202 and 203 are each comb-shaped with a plurality of yoke legs.
  • Each yoke half consists of a common base 202-0 with, for example, eight yoke legs 202-1 to 202-8. The same applies to the yoke legs 203-1 to 203-8.
  • An excitation coil 218, 219 designed as a flat coil is attached to each half of the yoke.
  • the turns of the excitation coil 218 run between the yoke legs 202-2 / 202-3 and 202-6 / 202-7 for the yoke half 202.
  • the yoke legs 202-3 to 202-6 protrude through the interior of the coil.
  • the magnetic working gaps are formed between the pole ends of the opposing yoke legs of both halves of the yoke.
  • One of the magnetic anchor webs 210 to 218 of the plunger 220 is in turn assigned to each working gap.
  • FIG. 2 also allows a significant reduction in the overall height of the pressure tappet compared to the arrangement according to FIG. 4, since the total force effect on the pressure tappet is increased by increasing the number of magnetic working gaps while the number of ampere turns of the coil remains the same.
  • the outer legs 54 and 52 (FIG. 4) of the E-shaped yoke half 50 in each two legs 202-1, 202-2 and 202-7 and 202-8 of the yoke half 202 (Fig. 2) are divided, while the middle leg 53 of the E-shaped yoke half 50 (Fig. 4) in a total of four each other adjacent legs 202-3 to 202-6 (Fig. 2) is divided.
  • a coil height reduced to 3/4 also means reduced heat losses (proportional ohmic resistance x current2). Furthermore, as already mentioned, it is possible to produce the magnetic yokes from two simple sheets onto which the coil body is to be attached accordingly. This enables very simple and inexpensive production.
  • the comb-like embodiment of the yoke halves according to FIG. 2 allows the overall height of the pressure tappet (and the related electromagnet unit) to be reduced to approximately half in comparison to the embodiment according to FIG. 4 (with E-shaped magnet yoke halves).
  • FIG. 7 shows a simplified schematic representation of a pair of three-leg yoke halves with a tappet comprising three anchor webs.
  • the plunger is marked with 700; its direction of action through the direction of the arrow D.
  • the plunger contains the anchor bars Al, A2 and A3. They are each assigned to a magnetic working gap G1, G2, G3.
  • the magnetic working gaps are mutually opposed legs of a pair of yoke halves: the magnetic working gap Gl from the legs Yll and Y21, the magnetic working gap G2 from the legs Y12 and Y22, the magnetic working gap G3 from the legs Y13 and Y23.
  • the excitation coil has not been shown.
  • FIG. 8 The course of the magnetic flux lines in the sectional area BB of FIG. 7 is shown here. It's just for them the magnetic flux important parts such as the yoke legs and the anchor bars shown.
  • the contour line of the entire plunger 700 has been omitted in FIG. 8 for reasons of simplification.
  • the middle leg Y12 or Y22 of a yoke half is twice as strong as the outer legs Y11, Y13 or Y21, Y23.
  • the mean magnetic working gap G2 is also twice as long as the working gaps G1 and G3 formed between the outer legs.
  • the anchor bars on the other hand, each have the same dimensions.
  • the middle yoke legs are therefore made stronger than the outer yoke legs in order to avoid that the middle yoke leg is driven into magnetic saturation faster than the outer yoke legs.
  • the volume of the anchor webs is in the order of the volume of the working gaps, it could be concluded that the anchor web A2 should be made larger, ie almost twice as large, as the two other anchor webs A1 and A3 for the shorter magnetic ones Working column G1 and G3.
  • this is not necessary since the force of the tappet is essentially determined by the acceleration force which is exerted when the anchor web is pulled into the working gap assigned to it.
  • this acceleration force with respect to the central anchor web A2 is almost as great as it would be if the anchor web A2 had twice the volume in order to almost fill the magnetic working gap G2.
  • the wording that the volume of the anchor bars is in the order of the working gap volume should also include those cases in which the The volume of the anchor bars is only about half the volume of the working gap.
  • FIG. 10 shows a simplified schematic representation of a pair of four-leg yoke halves with a tappet comprising four anchor webs.
  • the plunger is identified by 900, the direction of action of the plunger is again indicated by arrow direction D, the individual anchor webs are designated A1, A2, A3 and A4.
  • the upper half of the yoke has the yoke legs Y101, Y102, Y103 and Y104, the lower half has the yoke legs Y201, Y202, Y203 and Y204.
  • the working gap G10 is formed between the pole ends of the yoke legs YI01 and Y201; the working gap G11 between the pole ends of the yoke legs Y102 and Y202; A rbeitsspalt G12 between the pole ends of the yoke legs Y103 and Y203; the working gap G14 between the yoke legs Y104 and Y204.
  • the yoke legs Y102 and Y103 or Y202 and Y203 can be thought to have arisen from splitting the yoke leg Y12 or Y22 (FIG. 7). For reasons of clarity, the excitation coil is not shown in FIG. 10.
  • the excitation coil would be placed on each yoke half in such a way that the yoke legs Y102 and Y103 are inside and the windings run between the yoke legs Y101 and Y102 or Y103 and Y104. The same applies to the excitation coil of the lower half of the yoke.
  • FIG. 11 shows the course of the magnetic flux lines in the sectional area CC- (FIG. 10).
  • Fig. 11 the representation of the entire contour of the plunger 900 (Fig. 10) has again been omitted for reasons of clarity, since only the parts essential for guiding the magnetic flux (yoke legs and anchor webs) are shown.
  • FIG. 12 shows a simplified schematic representation of a pair of four-leg yoke halves, with a shortened plunger comprising only three anchor bars and with a magnetic working gap bridged by soft iron.
  • This representation in FIG. 12 can be derived from that in FIG. 10 by thinking that the plunger 900 (FIG. 10) is shortened by the fact that it only comprises the three anchor bars A102, A103 and A104.
  • Each of these anchor webs is assigned to one of the working gaps G11, G12 and G13, which are formed by the pole faces of the corresponding yoke legs - as also described in connection with FIG. 10.
  • the resultant difference between the two arrangements is that the working gap G10 in FIG. 10 in FIG. 12 is now not assigned an anchor web connected to the plunger 901, but that this working gap is bridged by a piece of soft iron S which conducts the magnetic flux.
  • the shortening of the ram is associated with a significant reduction in weight.
  • tappet drives are used in high-speed printers, such a reduction in weight can achieve higher printing speeds.
  • FIG. 13 shows the course of the magnetic flux lines through the magnetic yokes and the anchor webs in the sectional area DD of FIG. 12.
  • the outline of the plunger 901 (FIG. 2) has been omitted for reasons of simplification.
  • C13 which contains the following parts: Y101, Y102, A102 / G11, Y202, Y201 and the base parts of the yoke halves connecting the respective yoke legs
  • C13 which contains the following parts: Y101, Y102, A102 / G11, Y202, Y201 and the base parts of the yoke halves connecting the respective yoke legs
  • this also results in an increase in the acceleration force acting on the armature web A102 at the working gap G11.
  • FIG. 9 as a modification of the representation according to FIG. 8, the flow line through a pair of three-leg yoke halves is shown, the middle leg Y129 being tapered towards its pole face.
  • This representation only serves to indicate that the magnetic flux at the working gap G29 cannot be increased simply by reducing the pole faces. As a result, this embodiment does not result in a greater magnetic flux density in the working gap G29 of the middle legs Y129, Y229 and therefore also no greater acceleration force than in the embodiment according to FIG. 8 is the case.
  • the designations of the individual parts in FIG. 9 correspond to those of FIG. 8 except for the last additional 9-digit position.
  • FIG. 11 The representation of the course of the magnetic flux lines in Fig. 11 (four-leg yoke halves) shows, compared to that of Fig. 8 (three-leg yoke halves), that the three-leg yoke structure has an undesirable asymmetry for the magnetic flux density in the left L and right R, while such asymmetry 11 no longer occurs in the four-leg structure.
  • the imaginary division of the middle leg YI2 (FIG. 8) into two middle legs Y102 and Y103 in FIG. 11 significantly increases the acceleration force acting on the anchor bars.
  • FIG. 14 the schematic diagram of a pivotable print hammer about a pivot point 800 with three anchor webs 801, 802, 803 for cooperation with an electromagnet g according Fi. 12 shown.
  • a leaf spring 804 is connected to a base 805.
  • the leaf spring enables the pressure hammer to move in and against the direction of the arrow P. (Just as well, solutions are also conceivable in which the pivoting movement of the pressure hammer is not achieved by means of a leaf spring, but by means of a pin bearing).
  • the print hammer head 806 moves in the direction of arrow P as a result of the electromagnet, a stop occurs in the direction of pressure.
  • the anchor webs 801, 802, 803 are arranged in the middle part of the print hammer, which is somewhat widened counter to the printing direction P. (They correspond to the anchor bars A102, A103 and A104 in Fig. 12). These anchor webs are each assigned to a working gap, which is formed by the pole ends of corresponding yoke legs. From overview green the electromagnet unit 810 is shown offset to the left. The working gap assigned to the armature web 801 is formed by the pole ends of the yoke legs 810-1 and 810-2.
  • the working gap assigned to the anchor web 802 is formed by the pole ends of the yoke legs 810-3 and 810-4; the working gap associated with the armature web 803 from the pole ends of the yoke legs 810-5 and 810-6.
  • the yoke legs 810-01 and 810-02 are connected by a soft iron bridge S.
  • the yoke legs of the rear yoke half have the common base 811, those of the front yoke half have the common base 812.
  • the excitation coil for the rear yoke half is indicated at 813, that for the front yoke at 814.
  • the turns of the excitation coil 813 are between the yoke legs 810-1 and 810-1 and between the yoke legs 810-3 and 810-5.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Impact Printers (AREA)
EP83105444A 1983-06-01 1983-06-01 Elément d'actionnement électromagnétique Expired EP0127692B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8383105444T DE3376912D1 (en) 1983-06-01 1983-06-01 Electromagnetic driving element
EP83105444A EP0127692B1 (fr) 1983-06-01 1983-06-01 Elément d'actionnement électromagnétique
JP59075913A JPS6037107A (ja) 1983-06-01 1984-04-17 電磁ピストン・アクチユエータ
CA000454198A CA1200831A (fr) 1983-06-01 1984-05-11 Commande electronique de piston
US06/615,498 US4527139A (en) 1983-06-01 1984-05-30 Electromagnetic ram actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83105444A EP0127692B1 (fr) 1983-06-01 1983-06-01 Elément d'actionnement électromagnétique

Publications (2)

Publication Number Publication Date
EP0127692A1 true EP0127692A1 (fr) 1984-12-12
EP0127692B1 EP0127692B1 (fr) 1988-06-01

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ID=8190508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105444A Expired EP0127692B1 (fr) 1983-06-01 1983-06-01 Elément d'actionnement électromagnétique

Country Status (5)

Country Link
US (1) US4527139A (fr)
EP (1) EP0127692B1 (fr)
JP (1) JPS6037107A (fr)
CA (1) CA1200831A (fr)
DE (1) DE3376912D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346133A1 (de) * 1983-12-21 1985-07-04 Ibm Deutschland Gmbh, 7000 Stuttgart Automatische flugzeitmessung in anschlagdruckern
EP0210636A1 (fr) * 1985-07-29 1987-02-04 International Business Machines Corporation Ensemble d'actuateurs électromagnétiques pour les marteaux d'imprimantes à impact
WO1987007757A1 (fr) * 1986-06-02 1987-12-17 Portescap Dispositif d'actionnement electromagnetique
WO2000079672A1 (fr) * 1999-06-22 2000-12-28 Siemens Aktiengesellschaft Organe d'entrainement lineaire magnetique

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867059A (en) * 1988-08-05 1989-09-19 International Business Machines Corporation Impact printer print mechanism and method of manufacture
DE29706491U1 (de) * 1997-04-11 1998-08-06 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Elektromagnetischer Aktuator mit wirbelstromarmem Anker
JP3492288B2 (ja) * 2000-06-16 2004-02-03 キヤノン株式会社 電磁アクチュエータ、該電磁アクチュエータの作製方法、該電磁アクチュエータを用いた光偏向器
US20080061105A1 (en) * 2005-06-17 2008-03-13 Jonas Zachrisson Electrically Powered Tool

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FR1397007A (fr) * 1964-06-02 1965-04-23 Ultra Electronics Ltd Dispositif d'actionnement générateur de force, notamment pour instruments de mesure ou dispositifs de commande de position
FR1542785A (fr) * 1967-09-15 1968-10-18 English Electric Co Ltd Dispositifs d'actionnement électromagnétiques
DE1489691A1 (de) * 1965-07-02 1969-05-14 Binder Magnete Mit Gleichstrom,Wechselstrom oder Drehstrom speisbarer Elektromagnet
EP0063233A2 (fr) * 1981-04-11 1982-10-27 Ibm Deutschland Gmbh Elément d'actionnement électromagnétique

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US3275964A (en) * 1964-01-06 1966-09-27 Koontz Wagner Electric Company Multiple position solenoid device
GB1196418A (en) * 1966-09-26 1970-06-24 English Electric Co Ltd Improvements relating to Electro-Magnetic Devices
JPS4968624A (fr) * 1972-11-03 1974-07-03
DE3018407A1 (de) * 1980-05-14 1981-11-19 Ibm Deutschland Gmbh, 7000 Stuttgart Elektromagnetisch betaetigbarer stoesselantrieb, insbesondere fuer anschlagdrucker

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Publication number Priority date Publication date Assignee Title
DE837276C (de) * 1948-10-06 1952-04-21 Westfaelische Metall Ind Ag Lamellierter Magnet fuer elektromagnetische Geraete, insbesondere fuer elektromagnetische Signalhoerner
FR1397007A (fr) * 1964-06-02 1965-04-23 Ultra Electronics Ltd Dispositif d'actionnement générateur de force, notamment pour instruments de mesure ou dispositifs de commande de position
DE1489691A1 (de) * 1965-07-02 1969-05-14 Binder Magnete Mit Gleichstrom,Wechselstrom oder Drehstrom speisbarer Elektromagnet
FR1542785A (fr) * 1967-09-15 1968-10-18 English Electric Co Ltd Dispositifs d'actionnement électromagnétiques
EP0063233A2 (fr) * 1981-04-11 1982-10-27 Ibm Deutschland Gmbh Elément d'actionnement électromagnétique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346133A1 (de) * 1983-12-21 1985-07-04 Ibm Deutschland Gmbh, 7000 Stuttgart Automatische flugzeitmessung in anschlagdruckern
EP0210636A1 (fr) * 1985-07-29 1987-02-04 International Business Machines Corporation Ensemble d'actuateurs électromagnétiques pour les marteaux d'imprimantes à impact
WO1987007757A1 (fr) * 1986-06-02 1987-12-17 Portescap Dispositif d'actionnement electromagnetique
US4908592A (en) * 1986-06-02 1990-03-13 Portescap Electromagnetic actuating device
WO2000079672A1 (fr) * 1999-06-22 2000-12-28 Siemens Aktiengesellschaft Organe d'entrainement lineaire magnetique
US6888269B1 (en) 1999-06-22 2005-05-03 Siemens Aktiengesellschaft Magnetic linear drive

Also Published As

Publication number Publication date
DE3376912D1 (en) 1988-07-07
JPS6037107A (ja) 1985-02-26
EP0127692B1 (fr) 1988-06-01
CA1200831A (fr) 1986-02-18
US4527139A (en) 1985-07-02

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