Insulation element and method for introducing winding elements into grooves on an armature

DETAILED DESCRIPTION Because the insulator element of the invention has at least one plastic element that is intended for lining an armature slot, the lining process can be performed quickly, which makes short cycle times possible in an automated procedure.
Preferably, each plastic element provided for lining an armature slot is tubular.
The length of the tubular plastic elements is preferably adapted to the length of the armature slots.
Because of the tubular shape of the plastic elements, it is possible to adapt both to the shape of the armature slot and to the geometry of the winding elements, which are in the form of copper conductors, for instance.
Thus the winding elements can be disposed in a defined way, which has a favorable effect on the initial imbalance of the armature.
It is also preferably provided that the plastic element has a rib on its outside.
This rib makes it possible for the further portions of the plastic element to be made with extremely thin walls, since the rib lends adequate strength.
The rib can be provided in order to close the armature slot when the plastic element is introduced into the armature slot.
This closure of the armature slot has a favorable effect on armature noise, for instance.
The internal cross section of the plastic element can be substantially in the form of a figure-8.
Preferably, the upper and lower portions of the 8 are joined to one another.
Preferably, the plastic element has at least one longitudinal furrow on its inside.
By this at least one longitudinal furrow, an axial fixation in the plastic element is made possible, both on the inner side and on the outer side.
Moreover, the at least one longitudinal furrow assures not only a compensation for tolerances between the slot and the winding elements but also that the potting composition used in an ensuing impregnation bathes the conductors on both the inside and outside.
As a result, an optimal connection of the individual components (armature packet, insulator element and winding elements) can be assured