METHOD FOR PRODUCING A STATOR AND ASSOCIATED STATOR

Abstract

Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.

Claims

1. A method for producing a stator for electric motors comprising the steps of: combining a plurality of flexible electrical conductors to form a conductor bundle; and pressing two end regions of the conductor bundle in such a way that a central region of the conductor bundle formed between the two end regions remains flexible.

2. The method as claimed in claim 1, wherein the end regions of conductor bundle are pressed with a supply of heat.

3. The method as claimed in claim 1, further comprising fitting at least one winding head of the stator with the pressed conductor bundles.

4. The method as claimed in claim 3, further comprising embossing the winding head against a laminated core of the stator using a winding head embossing apparatus.

5. The method as claimed in claim 4, further comprising permanently mechanically fixing the winding head during the winding head embossing step.

6. The method as claimed in claim 5, wherein the step of permanently mechanically fixing comprises cementing.

7. A stator for electric motors comprising: at least one winding head element having a conductor bundle, and the conductor bundle having a plurality of flexible electrical conductors, wherein two end regions of the conductor bundle are pressed and a central region of the conductor bundle formed between the end regions is more flexible than the two end regions.

8. The stator as claimed in claim 7, wherein the flexible electrical conductors each have an insulator.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0025] Further details, features and advantages of the invention emerge from the drawings and from the following description of preferred embodiments with reference to the drawings.

[0026] Here, the drawings illustrate merely exemplary embodiments of the invention, which do not restrict the concept of the invention.

[0027] The sole FIGURE schematically illustrates a pressed litz-wire hairpin having a flexible head in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0028] The sole FIGURE schematically shows a pressed litz-wire hairpin 1 having a flexible head 4 in accordance with the present invention. The litz-wire hairpin is a conductor consisting of a composite assembly of a plurality of litz wires. The individual litz wires 2 are insulated from one another. The litz-wire hairpin 1 is designed in a U-shaped manner, that is to say the litz-wire hairpin 1 has two end regions 3a and 3b and a central subregion, the so-called head 4 of the litz-wire hairpin 1. In one preferred embodiment of the present invention, the two end regions 3a and 3b of the litz-wire hairpin 1 are pressed. The head 4 of the litz-wire hairpin is not pressed and remains flexible. Thus, the head 4 is more flexible than the end regions 3a and 3b of the litz-wire hairpin 1.