Insertion system and method to insert insulators and coils in the slots of the stator of an electric machine
AssigneeTM4 Inc.
InventorsBruno Carpentier, Martin Houle, Stephane Poulin
Life of this patent
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Abstract
The insertion of electrically insulating paper from a continuous roll into slots of a stator created by outwardly projecting teeth is described herein. The insertion of the insulating paper is done by the insertion of prewound coils in the stator slots. The electrically insulating paper is not cut prior to its insertion in the slots, thereby completely covering the outer surface of the stator. The insertion systems and methods described herein are also optionally concerned with the insertion of interphase insulation paper between the different coils inserted in the stator slots and with the insertion of slot closing wedges.
Claims15
A system to insert continuous insulating paper and a prewound coil provided with two longitudinal legs in longitudinal slots of a stator of an electric machine, comprising:
- a stator holder so configured as to hold the stator;
- and
- a prewound coil holder configured and sized to hold the two longitudinal legs of a prewound coil, the prewound coil holder being radially movable between a retracted position and an extended position where each longitudinal leg enters a corresponding longitudinal slot, the continuous insulating paper extending between the prewound coil holder and the stator;
- wherein movement of the prewound coil holder towards the extended position inserts both a portion of the continuous insulating paper and the longitudinal legs of the prewound coil in slots of the stator.
A method to insert continuous insulating paper and a prewound coil provided with two longitudinal legs in the longitudinal slots of a stator of an electric machine, comprising:
- holding the stator;
- providing a prewound coil holder configured and sized to hold the two longitudinal legs of a prewound coil, the prewound coil holder being radially movable between a retracted position and an extended position where each longitudinal leg enters a corresponding longitudinal slot;
- positioning the prewound coil holder so that each longitudinal leg faces a corresponding longitudinal slot;
- positioning the continuous insulating paper between the prewound coil holder and the stator;
- moving the prewound coil holder from the retracted position towards the extended position to therefore insert both a portion of the continuous insulating paper and the longitudinal legs of the prewound coil in longitudinal slots of the stator.
Dependencies are inferred from the claim text.