Patent ID: 6910257
Filing Date: 2005-06-28
Classification: H02K,Y10T

Abstract:
1. A production method of a sequentially joined-segment stator coil of a rotary electric machine comprising: preparing segments each including a head and a pair of legs extending straight in parallel to each other from ends of the head, the head being made up of a substantially U-shaped tip portion and a pair of head straight portions extending from the tip portion in alignment with the legs; preparing a plurality of rings arrayed coaxially with each other to be rotatable relative to each other; holding the legs of each of the segments in the rings, respectively; catching the tip portion of the head of each of the segments through a pair of tines in abutment to the tip portion in a circumferential direction of said rings, the tines being installed on a head press member which is disposed away from said rings in an axial direction of the rings and so designed as to be movable selectively to and away from said rings; moving said head press member toward said rings and, at the same time, rotating said rings in opposite directions to spread the legs of each of the segments through a given angle, thereby twisting the head straight portions of each of the heads to form head slant portions; removing said segments from the rings and the tines and inserting said segments into slots in a stator core; and joining said segments in said stator core in sequence to complete a stator coil; wherein the head press member retains each of the pairs of tines to be rotatable about an axis extending in alignment with an axis about which the rings rotate, each of the pairs of tines being allowed to rotate following rotation of the rings.