Rotor for electronic wristwatch step motor
AssigneeKabushiki Kaisha Suwa Seikosha
InventorYoshikazu Ono
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Abstract
A high performance rotor for an electronic wristwatch step motor and method of forming same is provided. A rotor pinion has a high performance permanent magnet rotor mounted thereto. The permanent magnet rotor includes a brittle permanent magnet core, and a reinforcing plate, the combination of the permanent magnet core and reinforcing plate allowing the high performance magnetic rotor to be interference fit upon the rotor pinion to effect an improved rotor construction.
Claims9
A rotor construction for an electronic wristwatch step motor comprising a rotor pinion and a high performance permanent magnet rotor mounted thereto, said permanent magnet rotor including a brittle permanent magnet core defining at least two diametrically opposite polarity poles and a nonmagnetizable reinforcing plate.
Dependencies are inferred from the claim text.