In the stator of the stator production mannered null multiphase distributed winding motor of the stator

摘要

PROBLEM TO BE SOLVED: To prevent damage to a conductor in the case of reshaping a coil end, ensure insulating performance between each phase of a winding, and ensure mechanical strength of the coil end, in a stator for a multi-phase distributed winding motor.;SOLUTION: Each phase coil is built by distributed winding in a slot of a stator core 12 as in Fig. 1 (a), an inter-phase insulating sheet 30 having many holes distributed by a prescribed numerical aperture is prepared as in Fig. 1 (b), and the inter-phase insulating sheet is arranged between a U-phase winding 16, a V-phase winding 18, and a W-phase winding 20 of a coil end 22 as in Fig. 1 (c). Varnish 34 is dripped on the coil end as in Fig. 1 (d) and infiltrated successively downward through the hole of the inter-phase insulating sheet 30, a varnish layer 36 is uniformly formed in a winding of the coil end as shown in Fig. 1 (e). Thereafter by hardening the varnish layer, the winding and the inter-phase insulating sheet are integrally solidified by the varnish layer as shown in Fig. 1 (f), to obtain a stator 40 formed with an insulating layer 38.;COPYRIGHT: (C)2004,JPO