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US 7,443,071 B2Granted
Motor stator
AssigneeFoxconn Technology Co., Ltd.
InventorsChao-Nien Tung, Chuen-Shu Hou, Chih-Hao Yang, Lung-Wei Huang
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AssigneeFoxconn Technology Co., Ltd.
InventorsChao-Nien Tung, Chuen-Shu Hou, Chih-Hao Yang, Lung-Wei Huang
Estimating the term…
A motor stator includes a stator core (500) and a stator coil. The stator core includes a central cylinder (501) and a plurality of posts (503) extending from the central cylinder. Each post is connected with a magnetic pole (505). The post has a smaller height than the central cylinder and the magnetic pole whereby a recess (507) is formed above the post between the central cylinder and the magnetic pole. The stator coil is received in the recess and wound around the post. The stator core is integrally made from ferromagnetic powder by powder metallurgy technique. Each particle of the powder includes an inner core (12) made of magnetic material and an outer shell (14) surrounding the inner core. The shell has a higher electrical resistance than the inner core.
A motor stator comprising:
A motor stator comprising a stator core, the stator core being slotted to define a plurality of posts wherein each of the posts has a magnetic pole at a free end thereof, the stator core being of a unitary, one-piece structure and being integrally formed from ferromagnetic powder by powder metallurgy, at least one particle of the ferromagnetic powder having a core-shell structure with a central core and an outer shell coated on the central core wherein the central core is configured for providing magnetic property for the stator core and the outer shell is configured for providing a bonding strength between particles of the ferromagnetic powder.
Dependencies are inferred from the claim text.