Nidec Corporation

Tatsuya Akase

Takaya Otsuki

Takamasa Yamashita

Takehito Tamaoka

Tomohiro Yoneda

Kazuhiko Fukushima

Teiichi Hirono

Tomohiro Hasegawa

Kiyoto Ida

Kazumi Takeshita

Akira Hirakawa

Shinichiro Noda

Yoshiharu Ikegami

Shunji Matsumoto

Kouta Kabune

Toshikazu Fukunaga

Tsunenori Tatsuno

Seungsin Yoo

Tomohiko Ogasawara

Naoki Matsuba

A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.

Fan bearing system having a fluid reservoir

A heat sink fan of the present invention includes a heat sink and a fan. The heat sink includes a base having a center axis and a plurality of fins extending radially outwardly from an outer circumference of the base and disposed in a circumferential direction. The fan includes an impeller portion disposed adjacently to the heat sink in the direction along the center axis, the impeller portion rotating about the center axis, and a frame portion for covering and fixing the impeller portion, part of the frame portion being opposed to the heat sink. The frame portion has at least one protruding portion. The protruding portion enters into a space between the fins which are adjacent to each other.

Heat sink fan

An impeller in a centrifugal fan includes a support portion having a cylindrical outer circumferential surface coaxial or substantially coaxial with a center axis and a plurality of moving blades arranged on the outer circumferential surface of the support portion independently of one another and configured to draw an air along the center axis and expel the air radially outwards when rotated about the center axis together with the support portion. At least one of the moving blades includes a first blade portion connected to, and extending radially outwards from, the outer circumferential surface of the support portion, at least one second blade portion having a radial inner end portion radially spaced apart from the outer circumferential surface of the support portion and a connecting member arranged to interconnect the first blade portion and the second blade portion.

Impeller and centrifugal fan

Heat sink

Growing community of inventors

Kyoto, Japan

Tatsuya Akase