Coil for an electric machine and method for producing a coil

摘要

The invention relates to a coil (1), in particular for an electric machine, in particular a transformator or an electromechanical converter, in particular an electric motor, for guiding an electric current for producing a magnetic field. Said coil consists of individual windings (2) that are essentially embodied as a flat body thus obtaining a tightly packed structure when the windings (2) are superimposed, and respectively, each winding (2) comprises at least one circulating conductor path with the exception of at least one electric interruption on one side. Said conductor path of a winding (2) comprises, on one point, an electroconductive connection with a conductor path of an adjacent winding (2). The windings (2) are incidentally, essentially electrically isolated to each other.

主权项

1. A coil for an electric machine for conducting an electric current for generating a magnetic field, the coil comprising:
individual turns which are embodied from a conductive sheet-metal strip material, and the turns are embodied generally as flat bodies of rectangular shape comprising two narrow sides and two long sides, in such a manner that a dense package with turns arranged one on top of the other is obtained, and each turn has at least one circumferential conductor track with the exception of at least one electrical interruption on one of the long sides resulting in a first end and a second end of the turn, and the conductor track of a turn at one location has an electrically conductive connection to a conductor track of an adjacent turn, wherein the turns are, apart from this, substantially electrically insulated from one another, and wherein a contact region for a current connection is provided at at least one end-side turn of the coil, wherein the contact region extends from one of the narrow sides of the end-side turn and provides a third end of the end-side turn and wherein the coil is adapted to be fittable onto a tooth of a star in the sense of an individual tooth coil, wherein a periphery of each tooth has a substantially constant outer diameter and wherein all the turns of the individual tooth coil are made narrower in the vicinity of a foot region of a tooth than in a shoulder region of a tooth and are sized to form an exposed groove with an adjacent coil, wherein an entirety of the exposed groove has a width which increases from the shoulder region to the foot region.