Motor Rotor Frame With Axially Spaced Legs for Rigidity and Cooling

The patent applies dimensionality change by transitioning from a two-dimensional planar attachment (all legs at the same axial position) to a three-dimensional distributed attachment (legs at different axial positions). This spatial distribution of legs along the axial dimension creates a more rigid frame structure that resists deformation during motor operation, thereby improving rotor rigidity without significantly complicating the manufacturing process.

The patent incorporates cooling fins and axial spacing between legs that create porous-like structures within the rotor frame. These features allow cooling air to flow through the rotor structure, improving heat dissipation efficiency. The porous arrangement of cooling channels and fin structures enables effective thermal management while maintaining a relatively simple manufacturing process through standard forming operations.

The patent applies segmentation by dividing the rotor frame into multiple legs that are axially spaced at different positions rather than being concentrated at a single location. This segmentation distributes the structural support functions across multiple axial levels, enhancing the overall rigidity of the frame and ensuring accurate positioning of the rotor relative to the stator for precise magnetic interaction.