Nidec Corporation

Yoshiharu Ikegami

Tomohiro Yoneda

Teiichi Hirono

Tomohiro Hasegawa

Shinichiro Noda

Akihiro Kimura

Tomotsugu Sugiyama

Shunji Matsumoto

Kouta Kabune

Masafumi Fujimoto

Seungsin Yoo

Takehito Tamaoka

Kazuhiko Fukushima

Kiyoto Ida

Tatsuya Akase

Naoki Matsuba

A dynamic pressure bearing apparatus includes a bearing portion, a shaft, a radial dynamic pressure bearing portion, and a seal gap. An annular member arranged in an annular shape, fixed to the shaft axially between the seal portion and the attachment surface, and arranged to extend radially outward beyond an opening of the seal gap. A minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the annular member. The seal gap is arranged to be in communication with an exterior space through the horizontal gap.

Dynamic pressure bearing apparatus and fan

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.

A dynamic pressure bearing apparatus includes a bearing portion; a shaft; a substantially annular bushing; a radial dynamic pressure bearing portion; and a seal gap. A minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the bushing. The seal gap is arranged to be in communication with an exterior space through the horizontal gap.

Fan bearing system having a fluid reservoir

Growing community of inventors

Kyoto, Japan

Yoshiharu Ikegami