Rotary motor and production method thereof, and laminated core and production method thereof

A laminated core for a rotary motor, said core comprising:

• a plurality of sheets of magnetic material stacked to form the magnetic path of the rotary motor,
• said plurality of sheets of magnetic material forming a plurality of block portions and thin portions connecting said block portions, each block portion including a plurality of magnetic pole teeth, said laminated core being bendable at said thin portions, wherein said block portions and said thin portions are integrally formed with said sheets of magnetic material.

A laminated core comprising:

• a plurality of stacked layers of magnetic material including outer layers having outer sides,
• wherein at least each outer layer is comprised of folded magnetic material that includes first and second portions each having opposing sides, one side having at least one edge including a burr portion thereon and the other side having edges free of burr portions, the first and second portions being folded toward each other with the burr portions being disposed opposite each other, the outer layers of magnetic material being arranged with the edges of the outer sides being free of burr portions.

A laminated core for forming a magnetic path for a transformer, the laminated core comprising:

• a plurality of stacked magnetic material sheets,
• each magnetic material sheet comprised of a substantially U-shaped core portion including a first end and a second end and having a substantially U-shaped opening, a substantially straight yoke portion including a first end and a second end and a thin portion which interconnects the first end of the core portion to the first end of the yoke portion, the thin portion being constructed and arranged to be bent so that the second end of the yoke portion engages the second end of the core portion to close the U-shaped opening with the yoke portion.