DE877474C - External rotor motor with additional insulation - Google Patents
External rotor motor with additional insulationInfo
- Publication number
- DE877474C DE877474C DESCH7886A DESC007886A DE877474C DE 877474 C DE877474 C DE 877474C DE SCH7886 A DESCH7886 A DE SCH7886A DE SC007886 A DESC007886 A DE SC007886A DE 877474 C DE877474 C DE 877474C
- Authority
- DE
- Germany
- Prior art keywords
- external rotor
- rotor motor
- additional insulation
- axis
- insulation
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
Die Erfindung betrifft-einen-elektrischen Außenläüfermotor, der vorwiegend zur Verwendung in Elektrowerkzeugen mit einer zusätzlichen Isolation ausgerüstet ist.The invention relates-to-an-electric external fan motor, the predominantly Equipped with additional insulation for use in power tools is.
Bei Elektrowerkzeugen besteht die große Ce-- fahr, daß bei einem Kabelschaden die Schutzerdleitung unterbrochen wird oder daß durch einen Kurzschluß im Kabel Spannung- auf den Maschinenkörper kommt und dadurch der Bedienende gefährdet ist. Um dieser Gefahr zu begegnen wird angestrebt, den elektrischen Teil vollisoliert einzubauen, indem das umschließende Gehäuse aus Isolierstoff gefertigt wird oder der Anker ist in normalen Motoren auf Isolierhülsen -gelagert, wobei die weiteren, Übertragungselemente - ebenfalls isoliert sein. müssen. .Diese Konstruktionen sind umständlich.With power tools there is a big risk that a cable is damaged the protective earth line is interrupted or that due to a short circuit in the cable There is tension on the machine body and the operator is endangered. To counter this risk, the aim is to have the electrical part fully insulated to be installed in that the enclosing housing is made of insulating material or In normal motors, the armature is mounted on insulating sleeves, with the other, Transmission elements - also be insulated. have to. .These constructions are laborious.
Gemäß der Erfindung wird der elektrische Vollschutz bei Außenläufermotoren dadurch erreicht, daß der Stator in seiner Gesamtheit vom äußeren Maschinenkörper elektrisch isoliert wird. Beispielsweise wird nach Abb. r der-Ankerkörper a auf der -zugehörigen Achse b durch eine Isolierung c zusätzlich isoliert. Damit ist ein Stromdurchgang durch Schadhaftwerden der Wicklung unmöglich gemacht.According to the invention, there is full electrical protection in external rotor motors achieved in that the stator in its entirety from the outer machine body is electrically isolated. For example, according to Fig. R, the anchor body a is on the associated axis b is additionally insulated by insulation c. So is a passage of current is made impossible by the winding becoming damaged.
Weitere Variationen sind gegeben, indem (Abb. 2) der Ankerkörper e mit Achse d in dafür vorgesehene mit Isolierungen f versehenen Achse-Büchsen g, h innen aufgenommen wird oder in Abwandlung nach Abb. 3 der Ankerkörper i mit Achse k über Isolierhülsen l in Achsenenden m, n außen aufgenommen ist.Further variations are given in that (Fig. 2) the anchor body e with axis d is accommodated in axis bushes g, h provided with insulation f provided on the inside or, as a modification according to Fig. 3, the anchor body i with axis k via insulating sleeves l in Axis ends m, n is added outside.
Eine andere Ausführungsform zeigt die Abb, q., nach der die Achse o mit dem Ankerkörper p in Isolierstücken r aufgenommen ist, die gleichzeitig zur Aufnahme der Kugellager und zur Befestigung dienen oder sinngemäß die Welle mittels Isolierbüchsen gegen .die Motorbefestigung isolieren.Another embodiment is shown in Fig. Q., According to which the axis o is added to the anchor body p in insulating pieces r, the same time for Take up the ball bearings and serve for fastening or, analogously, the shaft by means of Isolate insulating sleeves against the motor mounting.
Die Isolierung kann auch als Kombination der angegebenen verschiedenen Möglichkeiten je nach Erfordernissen durchgeführt werden.The insulation can also be used as a combination of the various specified Possibilities can be carried out according to requirements.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH7886A DE877474C (en) | 1951-11-03 | 1951-11-03 | External rotor motor with additional insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH7886A DE877474C (en) | 1951-11-03 | 1951-11-03 | External rotor motor with additional insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE877474C true DE877474C (en) | 1953-05-26 |
Family
ID=7425582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DESCH7886A Expired DE877474C (en) | 1951-11-03 | 1951-11-03 | External rotor motor with additional insulation |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE877474C (en) |
-
1951
- 1951-11-03 DE DESCH7886A patent/DE877474C/en not_active Expired
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