Rotary Electric Machine Armature Core with Expandable Segments

The armature core is divided into multiple core segments (first, second, third, fourth core segments) that are arranged in a specific sequential pattern. Each core segment contains magnetic pole tooth portions that are positioned to form staggered straight rows without requiring enlarged notches. The segmentation allows the core to achieve both high material yield and good torque characteristics by distributing the magnetic pole teeth across multiple segments rather than relying on notch geometry.

Multiple core segments are combined and integrated into a unified armature core structure through precise arrangement and connection. The first, second, third, and fourth core segments are positioned and connected to form a complete armature core with staggered straight rows of magnetic pole teeth. This merging approach achieves high material yield without requiring complex splitting and reassembly operations, as the segments are designed to be assembled in a straightforward sequential manner.

The armature core employs a dynamic arrangement where core segments can be assembled in a flexible sequential order. The first, second, third, and fourth core segments are designed with specific geometries that allow them to be positioned and connected in various configurations to form staggered straight rows. This dynamic design flexibility reduces the need for complex fixed pressing dies and assembly fixtures, thereby lowering device complexity and manufacturing costs while maintaining high material yield.