DE1064144B - Electric motor used to drive a sound recording and playback device with a stator pole system made of permanent magnetic material - Google Patents
Electric motor used to drive a sound recording and playback device with a stator pole system made of permanent magnetic materialInfo
- Publication number
- DE1064144B DE1064144B DEST12457A DEST012457A DE1064144B DE 1064144 B DE1064144 B DE 1064144B DE ST12457 A DEST12457 A DE ST12457A DE ST012457 A DEST012457 A DE ST012457A DE 1064144 B DE1064144 B DE 1064144B
- Authority
- DE
- Germany
- Prior art keywords
- electric motor
- pole
- magnetic material
- permanent magnetic
- playback device
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
Zum Antrieb eines Ton-Aufnahme-und Wiedergabegerätes dienender Elektromotor mit aus dauermagnetischem Werkstoff bestehendem Statorpolsystem Der Erfindung liegt das Problem zugrunde, einen Motor zu schaffen, dessen Statorpolsystem aus dauermagnetischem Werkstoff besteht und der bei kleinsten Abmessungen eine große Streufeldfreiheit besitzt. Anforderungen dieser Art werden insbesondere an Motoren gestellt, die zum Antreiben von Ton-Aufnahme-und Wiedergabegeräten dienen. Die Verwendung von Eisenblech-Abschirmhauben muß hier ausscheiden, weil der zur Verfügung stehende Raum nicht ausreicht. Anderseits sollen aber bei solchen Geräten die Streukraftlinien von den zu beschreibenden Stahldrähten ferngehalten werden.Electric motor used to drive a sound recording and playback device with existing permanent magnetic material stator pole system The invention is based on the problem of creating a motor whose stator pole system is made of permanently magnetic Material consists and with the smallest dimensions a large freedom from stray fields owns. Requirements of this type are placed in particular on engines that are used for Driving sound recording and playback devices are used. The use of sheet iron shielding hoods must be ruled out here because the space available is insufficient. On the other hand but in such devices the stray force lines from the steel wires to be described should be be kept away.
Die damit gegebene Aufgabe findet bei einem zum Antrieb eines Ton-Aufnahme- und Wiedergabegerätes dienenden Elektromotor mit aus dauermagnetischem Werkstoff bestehendem radial magnetisiertem Statorpolsystem erfindungsgemäß ihre Lösung darin, daß die Statorpole an jeder Stirnseite des Magnetsystems den Anker in axialer Richtung überragende dünwandige magnetisch leitende Verlängerungen als Streuflußwege für den von Pol zu Pol gehenden Streufluß besitzen.The given task takes place in the case of a drive for a sound recording and playback device serving electric motor made of permanent magnetic material existing radially magnetized stator pole system according to the invention, their solution is that the stator poles on each end face of the magnet system the armature in the axial direction outstanding thin-walled magnetically conductive extensions as stray flux paths for have the leakage flux going from pole to pole.
Durch diese Ausbildung wird erreicht, daß der größte Teil des Streuflusses von Pol zu Pol über die durch die Polverlängerung entstehenden Streuflußwege fließt und damit von der Umgebung des Motors ferngehalten wird.This training ensures that most of the leakage flux flows from pole to pole via the stray flux paths created by the pole extension and is thus kept away from the environment of the engine.
Besonders günstig ist es, wenn das Statorsystem stirnseitig durch magnetisch leitende Lagerschilde überbrückt wird.It is particularly favorable if the stator system passes through the front magnetically conductive end shields is bridged.
Damit das Statorfeld in seiner Wirkung auf den Anker bei dieser Ausbildung nicht geschwächt wird, empfiehlt es sich, die Ankerlänge verhältnismäßig groß zu wählen, derart, daß sie mindestens dem doppelten Ankerdurchmesser entspricht.So that the stator field in its effect on the armature in this training is not weakened, it is recommended that the anchor length is relatively large choose so that it corresponds to at least twice the anchor diameter.
Die Erfindung wird nachstehend an Hand der Zeichnung erläutert, die einen Elektromotor im Längsschnitt veranschaulicht.The invention is explained below with reference to the drawing, which illustrates an electric motor in longitudinal section.
Der Motor besitzt ein aus dauermagnetischem Werkstoff bestehendes radial magnetisiertes Polsystem 1. Dessen einer Pol ist mit 2 und der andere Pol ist mit 3 bezeichnet. Die Pole überragen den Anker 4 mit der Wicklung 5 und dem Kollektor 6 sowie den Kollektorbürsten 7 in axialer Richtung mit ihren Verlängerungen 8-9 und 10-11. Diese magnetisch leitenden Verlängerungen sind dünnwandig gehalten und dienen als Streuflußwege für den von Pol zu Pol verlaufenden stirnseitigen Streufluß.The motor has a permanent magnetic material radially magnetized pole system 1. One pole of which is 2 and the other pole is denoted by 3. The poles protrude beyond the armature 4 with the winding 5 and the Collector 6 and the collector brush 7 in the axial direction with their extensions 8-9 and 10-11. These magnetically conductive extensions are kept thin-walled and serve as stray flux paths for the frontal stray flux running from pole to pole.
Damit die Streukraftlinien auf ihrem Wege so wenig wie möglich behindert werden, bestehen die die Ankerwelle 15 aufnehmenden Lagerschilde 12, 13 aus magnetisch leitendem Werkstoff.So that the stray force lines are hindered as little as possible on their way are made, the armature shaft 15 receiving end shields 12, 13 from magnetic conductive material.
Die Ankerlänge beträgt ein Vielfaches des Ankerdurchmessers. Sie ist zumindest doppelt so groß bemessen wie dieser. Der das Nutzfeld liefernde Teil der Pole macht daher den größten Teil der Polfläche aus. Hierdurch wird bewirkt, daß die zusätzliche Streuung die Leistung des Motors nicht wesentlich beeinträchtigt.The anchor length is a multiple of the anchor diameter. she is at least twice as large as this one. The part of the Pole therefore makes up the largest part of the pole face. This has the effect that the additional dispersion does not significantly affect the performance of the engine.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST12457A DE1064144B (en) | 1957-04-15 | 1957-04-15 | Electric motor used to drive a sound recording and playback device with a stator pole system made of permanent magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST12457A DE1064144B (en) | 1957-04-15 | 1957-04-15 | Electric motor used to drive a sound recording and playback device with a stator pole system made of permanent magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1064144B true DE1064144B (en) | 1959-08-27 |
Family
ID=7455716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEST12457A Pending DE1064144B (en) | 1957-04-15 | 1957-04-15 | Electric motor used to drive a sound recording and playback device with a stator pole system made of permanent magnetic material |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1064144B (en) |
-
1957
- 1957-04-15 DE DEST12457A patent/DE1064144B/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| None * |
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