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DE647497C - Electric machine for shock-rich operation - Google Patents

Electric machine for shock-rich operation

Info

Publication number
DE647497C
DE647497C DEB171606D DEB0171606D DE647497C DE 647497 C DE647497 C DE 647497C DE B171606 D DEB171606 D DE B171606D DE B0171606 D DEB0171606 D DE B0171606D DE 647497 C DE647497 C DE 647497C
Authority
DE
Germany
Prior art keywords
winding
iron core
synthetic resin
iron
electric machine
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
DEB171606D
Other languages
German (de)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Publication date
Priority to DEB171606D priority Critical patent/DE647497C/en
Application granted granted Critical
Publication of DE647497C publication Critical patent/DE647497C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/32Windings characterised by the shape, form or construction of the insulation
    • H02K3/325Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/52Fastening salient pole windings or connections thereto
    • H02K3/521Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2203/00Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12Machines characterised by the bobbins for supporting the windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Description

Die Erfindung betrifft elektrische Maschinen für erschütterungsreichen Betrieb, insbesondere kraftbetriebene Handhämmer mit Spulenkörpern, bei denen die Wicklung um einen Eisenkern gelegt und mit diesem zusammen mit Kunstharz umpreßt ist.The invention relates to electrical machines for high-vibration operation, in particular power-operated hand hammers with bobbins, in which the winding around a Iron core is placed and pressed around with this together with synthetic resin.

Bei solchen Maschinen hat sich gezeigt. daß infolge der starken Erschütterungen und auch wegen der verschiedenen großen Dehnungsziffern der Preßmasse und des Eisenpakets sich die Wicklungen leicht vom Eisenpaket wenigstens so weit lockern, daß während des Betriebes die Wicklung am Eisenpaket mit ganz kleinen Ausschlägen hin und J5 her reibt. Die Folge dieser Reibung des Wickmngsbündels am Eisenpaket ist das Durchscheuern der Isolierung und schließlich ein Masseschluß.With such machines it has been shown. that due to the strong vibrations and also because of the various large elongation digits of the molding compound and the iron core, the windings come loose easily from the iron core at least so far that during the operation of the winding on the iron core with very small deflections back and J rubs 5 ago. The consequence of this friction of the winding bundle on the iron core is the chafing of the insulation and ultimately a short to ground.

Gemäß der Erfindung wird diese Gefahr dadurch beseitigt, daß zwischen der zu um- _ pressenden Wicklung und dem Eisenkern eine mit diesem fest verbundene Zwischenschicht aus einem sowohl an Eisen als auch an Kunstharz gut haftenden Stoff, wie z. B.According to the invention, this risk is eliminated by the fact that between the _ pressing winding and an intermediate layer firmly connected to the iron core made of a substance that adheres well to both iron and synthetic resin, such as B.

Weichgummi, vorgesehen ist.Soft rubber, is provided.

Diese Weichgummischicht, welche vor dem Umpressen des Spulenkörpers zweckmäßig durch Aufvulkanisieren auf diejenigen Stellen des Eisenkerns aufgebracht ist, an welche die Wicklung anzuliegen kommt, bewirkt, daß das sonst schlecht an Eisen haftende Kunstharz auf dem Umweg über die Gummischicht nunmehr einwandfrei fest mit dem Eisenkern verbunden ist.This soft rubber layer, which is useful before pressing around the bobbin is applied by vulcanization to those points of the iron core to which the Winding comes to rest, causes the otherwise poorly adhering synthetic resin to iron is now properly connected to the iron core via the rubber layer.

Als erfreuliche Nebenwirkung dieser Gummizulage ist festzustellen, daß dank der Elastizität des Gummis jede Möglichkeit für ein Blankscheuern der etwa ganz an der Oberfläche des mit Kunstharz umpreßten Wicklungsblockes liegenden Wicklungsdrähte vermieden ist.A pleasant side effect of this rubber insert is that it is thanks to its elasticity of the rubber every possibility for a bare rubbing of the approximately completely on the surface of the winding blocks that are overmolded with synthetic resin are avoided is.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes schematisch dargestellt.
Abb. ι zeigt in Ansicht ein Polpaket mit < eingelegten Wicklungen vor dem Umpressen mit Kunstharz.
An exemplary embodiment of the subject matter of the invention is shown schematically in the drawing.
Fig. Ι shows a view of a pole assembly with <inserted windings before being pressed with synthetic resin.

Abb. 2 zeigt den gleichen Ständer in Achsrichtung gesehen, und zwar in der oberen Hälfte im Schnitt und in der unteren Hälfte in Ansicht. In der oberen Hälfte fehlt außerdem die Wicklung.Fig. 2 shows the same stand viewed in the axial direction, namely in the upper one Half in section and the lower half in view. The upper half is also missing the winding.

Der eigentliche Polring des Stators ist mit ι bezeichnet. Um seine Polschuhe ι" herum sind die zwei Wicklungsspulen 2 gelegt. An denjenigen Stellen des Eisenkerns, an welche diese Wicklung anzuliegen kommt, ist eine Weichgummischicht 3 vorgesehen. Diese ist im wesentlichen auf die zwischen den Polschuhen τ" liegenden Innenflächen 1* des Ständerpakets und auf den Endblechen desselben im Bereich der Polschuhe aufgetragen. The actual pole ring of the stator is denoted by ι. About its pole pieces ι "around the two winding coils 2 are set. At those locations of the iron core to which comes to abut this winding, a soft rubber layer 3 is provided. This is mainly attributable to the between the pole pieces τ" lying inner surfaces 1 * of the stator package and applied to the end plates of the same in the area of the pole shoes.

Claims (3)

Patentansprüche: 6s Claims: 6s i. Elektrische Maschine für erschütterungsreichen Betrieb mit Spulenkörpern, bei denen die Wicklung um einen Eisenkern gelegt und mit diesem zusammen mit erhärtendem Kunstharz umpreßt ist, dadurch gekennzeichnet, daß zwischen der zu umpressenden Wicklung und dem Eisenkern eine mit diesem fest verbundene Zwischenschicht aus einem sowohl an Eisen als auch an Kunstharz gut haftenden Stoff, wie z. B. Weichgummi, vorgesehen ist.i. Electric machine for high-vibration operation with bobbins, in which the winding is placed around an iron core and pressed around with this together with hardening synthetic resin, thereby characterized in that between the winding to be pressed and the iron core a firmly connected to this Interlayer made of a substance that adheres well to both iron and synthetic resin, such as B. soft rubber, provided is. 2. Elektrische Maschine nach Anspruch i, dadurch gekennzeichnet, daß an den mit den Wicklungen in Berührung kommenden Stellen auf den Eisenkernen eine Weichgummiauf lage auf vulkanisiert ist.2. Electrical machine according to claim i, characterized in that on A soft rubber layer is vulcanized on the places on the iron cores that come into contact with the windings. 3. Elektrische Maschine nach Anspruch ι und 2, dadurch gekennzeichnet, daß bei einem Ringpolpaket sowohl die mit den Wicklungen ausgelegten Innenhohlräume als auch diejenigen Stirnflächenteile des Pakets mit einem Überzug vorgesehen sind, gegen welche die abgewinkelten Spulen zu Hegen kommen.3. Electrical machine according to claim ι and 2, characterized in that that in the case of a ring pole pack both the inner cavities designed with the windings as well as those end face parts of the package are provided with a coating against which the angled coils come to rest. Hierzu r Blatt ZeichnungenPlease refer to the sheet of drawings
DEB171606D Electric machine for shock-rich operation Expired DE647497C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB171606D DE647497C (en) Electric machine for shock-rich operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB171606D DE647497C (en) Electric machine for shock-rich operation

Publications (1)

Publication Number Publication Date
DE647497C true DE647497C (en) 1937-07-06

Family

ID=7006825

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB171606D Expired DE647497C (en) Electric machine for shock-rich operation

Country Status (1)

Country Link
DE (1) DE647497C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074735B (en) * 1960-02-04 Prag Karel Preveaux Assembly of an electric vibration machine with an electric motor or an electromagnet, in particular for compacting concrete tables
DE2211840A1 (en) * 1972-03-11 1973-09-20 Bosch Gmbh Robert POLE HOUSING FOR ELECTRIC MACHINERY
DE2435738A1 (en) * 1974-07-25 1976-02-19 Bosch Gmbh Robert POLE HOUSING FOR ELECTRIC MACHINERY

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074735B (en) * 1960-02-04 Prag Karel Preveaux Assembly of an electric vibration machine with an electric motor or an electromagnet, in particular for compacting concrete tables
DE2211840A1 (en) * 1972-03-11 1973-09-20 Bosch Gmbh Robert POLE HOUSING FOR ELECTRIC MACHINERY
DE2435738A1 (en) * 1974-07-25 1976-02-19 Bosch Gmbh Robert POLE HOUSING FOR ELECTRIC MACHINERY

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