Motor with rotor holder having first and second magnets with different intervals to holder

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11456637
APP PUB NO 20200106317A1
SERIAL NO

16535457

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A motor includes a stationary unit including a stator and a rotation unit including a magnet unit disposed radially outward of the stator and a cylindrical rotor holder. The magnet unit is held on a radially inside surface of the rotor holder. The magnet unit includes first magnets each of which has N and S poles magnetized in a radial direction, and second magnets each of which has N and S poles magnetized in a circumferential direction. Magnetic poles of radially inner end portions of the first magnets adjacent to each other in the circumferential direction via the second magnet are different from each other. Magnetic poles of circumferential end portions of the second magnets adjacent to each other in the circumferential direction via the first magnet are different from each other. An interval is provided between a radially outside surface of each first magnet and the radially inside surface of the rotor holder, and between a radially outside surface of each second magnet and the radially inside surface of the rotor holder.

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First Claim

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Patent Owner(s)

  • NIDEC CORPORATION

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichioka, Yusuke Kyoto, JP 5 2
Sakauchi, Akira Kyoto, JP 4 12
Suginohara, Takahiro Kyoto, JP 3 7

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