DE2361217A1 - Unipolar stepping motor with premagnetised rotor - has stationary permanent magnet inside hollow rotor between C-shaped stator yoke - Google Patents

Unipolar stepping motor with premagnetised rotor - has stationary permanent magnet inside hollow rotor between C-shaped stator yoke

Info

Publication number
DE2361217A1
DE2361217A1 DE2361217A DE2361217A DE2361217A1 DE 2361217 A1 DE2361217 A1 DE 2361217A1 DE 2361217 A DE2361217 A DE 2361217A DE 2361217 A DE2361217 A DE 2361217A DE 2361217 A1 DE2361217 A1 DE 2361217A1
Authority
DE
Germany
Prior art keywords
rotor
permanent magnet
stepping motor
premagnetised
shaped stator
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.)
Pending
Application number
DE2361217A
Other languages
German (de)
Inventor
Helmut Stechmann
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.)
Kienzle Uhrenfabriken GmbH
Original Assignee
Kienzle Uhrenfabriken 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 Kienzle Uhrenfabriken GmbH filed Critical Kienzle Uhrenfabriken GmbH
Priority to DE2361217A priority Critical patent/DE2361217A1/en
Priority to US05/442,286 priority patent/US3979616A/en
Priority to JP49019343A priority patent/JPS49114015A/ja
Publication of DE2361217A1 publication Critical patent/DE2361217A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K37/16—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures having horseshoe armature cores

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

The unipolar stepping motor has a premagnetised rotor between the non-aligned limbs of a C-shaped stator yoke, as in the main patent. The rotor is hollow and contains a stationary permanent magnet. The permanent magnet may be a hollow tube or a solid cylinder, and radially unipolar or radially multi-polar. The motor is driven by pulses applied to a coil around the straight part of the yoke in one direction only. The pulse generated field in the rotor region is of opposite direction and higher value than those of the permanent magnet field. This shape and location of permanent magnet improves the stepping motor performance.

Description

Die Erfindung betrifft einen Drehschrittmotor mit unipolarer Ansteuerung, dessen vormagnetisierter Rotor sich im magnetischen Feld einer Steuerspule taktmäßig bewegt, nach Patent ..... (Patentanmeldung P 23 08 053.7).The invention relates to a rotary stepper motor with unipolar control, its premagnetized rotor moves cyclically in the magnetic field of a control coil, according to patent ..... (patent application P 23 08 053.7).

Das Hauptpatent beschreibt einen Drehschrittmotor, der durch die einfachste Impulsform eines Frequenzteilerausgangs ansteuerbar ist, bei dem also die Motorspule nur in einer Richtung vom Strom durchflossen wird.The main patent describes a rotary stepper motor, which by the simplest pulse shape of a frequency divider output is controllable, in which the motor coil only flows through the motor in one direction of the current will.

Die Lehre des Hauptpatente geht dahin, daß sich der Rotor des Drehschrittmotors im Feld eines Permanentmagneten befindet und das durch einen Stromimpuls durch die Steuerspule erzeugte Feld, im Bereich desThe teaching of the main patent is that the rotor of the rotary stepper motor is in the field of a permanent magnet and the field generated by a current pulse through the control coil, in the area of the

509825/0458509825/0458

6535/22/UO/gn - 2 - 22. Nov. 19736535/22 / UO / gn - 2 - Nov. 22, 1973

Rotors entgegengesetzt und größer ist als das permanente Magnetfeld, wobei die Fangbereiche der Felder sich teilweise überdecken.The rotor is opposite and larger than the permanent magnetic field, with the capture areas of the fields partially overlap.

Das Hauptpatent beschreibt weiterhin verschiedene Arten, wie der Permanentmagnet angeordnet sein kann.The main patent also describes different ways in which the permanent magnet can be arranged can.

Die vorliegende Erfindung hat eine Anordnung des Permanentmagneten zum Ziel, die nicht nur geometrisch besonders günstig ist, sondern insbesondere auch die magnetische Leitfähigkeit der Gesamtanordnung durch die Einfügung des Permanentmagneten nicht stört.The present invention aims at an arrangement of the permanent magnet that is not only geometrical is particularly favorable, but in particular also the magnetic conductivity of the overall arrangement the insertion of the permanent magnet does not interfere.

Dies wird erfindungsgemäß dadurch erreicht, daß der Rotor innen hohl ist und daß im dortigen Hohlraum ein feststehender Permanentmagnet angeordnet ist.This is achieved according to the invention in that the rotor is hollow on the inside and that a fixed permanent magnet is arranged in the cavity there is.

Ein Ausführungsbeispiel der Erfindung ist in der ^.Zeichnung dargestellt.An embodiment of the invention is in ^. Drawing shown.

Der vormagnetisierte Rotor R läuft zwischen den Polen eines Joches J, auf welches die Steuerspule S aufgebracht ist. Bezüglich der Einzelheiten der Polgestaltung wird auf die Hauptamneldung Bezug genommen. Während in der Hauptanmeldung der Rotor R massiv ausgebildet ist, besitzt der hier dargestellte Rotor R einen inneren Hohlraum. Dort ist nun der Permanent-The premagnetized rotor R runs between the poles of a yoke J on which the control coil S is upset. With regard to the details of the pole design, reference is made to the main notification. While the rotor R is solid in the main application, the rotor R shown here has an inner cavity. There is now the permanent

50982 5/0458 - 3 -50982 5/0458 - 3 -

6535/22/UO/gn - 3 - 22. Nov. 19736535/22 / UO / gn - 3 - Nov. 22, 1973

magnet P feststehend und in geeigneter Ausrichtung : angeordnet. In dieser Lage beeinflußt er die magnetische Leitfähigkeit des Joches J in keiner Weise. Dennoch ist das für den Grundgedanken des Hauptpatents erforderliche Permanentmagnetfeld am Ort des Rotors gegeben. Wird durch die Steuerspule S ein ;/-. Stromstoß gegeben, dessen Magnetfeld das Permanentmagnetf eld überkompensiert, verdreht sich der Rotor R um den Permanentmagneten P, und zwar bei jedem Stromstoß einmal. Die aufeinanderfolgenden Stromstöße haben dabei immer die gleiche Polarität. magnet P fixed and in a suitable orientation: arranged. In this position, it does not affect the magnetic conductivity of the yoke J in any way. Nevertheless, the permanent magnetic field required for the basic idea of the main patent is given at the location of the rotor. Is by the control coil S a ; / -. Given a current impulse, the magnetic field of which overcompensates the permanent magnet field, the rotor R rotates around the permanent magnet P, once for each current impulse. The successive current surges always have the same polarity.

In der Zeichnung sind der hob.!zylindrische Rotor R und der zylindrische Permanentmagnet P zwei polig magnetisiert dargestellt. Eine mehrpolige
Magnetisierung ist jedoch ebenso denkbar..In the drawing, the cylindrical rotor R and the cylindrical permanent magnet P are shown magnetized with two poles. A multipolar one
However, magnetization is also conceivable.

AnsprücheExpectations

509825/0A58509825 / 0A58

Claims (1)

6535/22/UO/gn -1I- 22. Nov. 19736535/22 / UO / gn - 1 I - Nov. 22, 1973 ANSPRÜCHEEXPECTATIONS [ 1. I Drehschrittmotor mit unipolarer Ansteuerung, V ' dessen vormagnetisierter Rotor sich im magnetischen Feld einer Steuerspule taktmäßig bewegt, nach Patent .... (Patentanmeldung P 23 08 O53.7), dadurch gekennze ic hn e t , daß der Rotor (R) innen hohl ist und daß im dortigen Hohlraum ein feststehender Permanentmagnet (P) angeordnet ist.[1. I rotary stepper motor with unipolar control, V ' whose premagnetized rotor moves in a clocked manner in the magnetic field of a control coil, according to patent .... (patent application P 23 08 O53.7), characterized in that the rotor (R ) is hollow inside and that a fixed permanent magnet (P) is arranged in the cavity there. 2. Drehschrittmotor nach Anspruch 1, dadurch gekennze i chne t, daß Rotor (R) und Permanentmagnet (P) zweipolig vormag— netisiert sind.2. Rotary stepping motor according to claim 1, characterized in that the rotor (R) and permanent magnet (P) are pre-magnetized in two poles. 3. Drehschrittmotor nach Anspruch 1, dadurch geke nnze i chne t, daß Rotor (R) und Permanentmagnet (P) mehrpolig ausgebildet sind.3. rotary stepper motor according to claim 1, characterized geke nnze i chne t that rotor (R) and permanent magnet (P) are multi-pole. k. Drehschrittmotor nach einem der Ansprüche 1 bis 3> dadurch gekennze ichnet, daß der Permanentmagnet (P) Zylinderform hat. k. Rotary stepping motor according to one of Claims 1 to 3, characterized in that the permanent magnet (P) has a cylindrical shape. 5.· Drehschrittmotor nach einem der Ansprüche 1 bis k, dadurch gekennze ichnet, daß der Rotor (R) die Form eines Hohlzylinders hat.5. Rotary stepping motor according to one of claims 1 to k , characterized in that the rotor (R) has the shape of a hollow cylinder. 50 9 8257 045850 9 8257 0458
DE2361217A 1973-02-19 1973-12-08 Unipolar stepping motor with premagnetised rotor - has stationary permanent magnet inside hollow rotor between C-shaped stator yoke Pending DE2361217A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2361217A DE2361217A1 (en) 1973-12-08 1973-12-08 Unipolar stepping motor with premagnetised rotor - has stationary permanent magnet inside hollow rotor between C-shaped stator yoke
US05/442,286 US3979616A (en) 1973-02-19 1974-02-13 Unipolar rotary step motor
JP49019343A JPS49114015A (en) 1973-02-19 1974-02-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2361217A DE2361217A1 (en) 1973-12-08 1973-12-08 Unipolar stepping motor with premagnetised rotor - has stationary permanent magnet inside hollow rotor between C-shaped stator yoke

Publications (1)

Publication Number Publication Date
DE2361217A1 true DE2361217A1 (en) 1975-06-19

Family

ID=5900250

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2361217A Pending DE2361217A1 (en) 1973-02-19 1973-12-08 Unipolar stepping motor with premagnetised rotor - has stationary permanent magnet inside hollow rotor between C-shaped stator yoke

Country Status (1)

Country Link
DE (1) DE2361217A1 (en)

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