Nidec Corporation

Shunji Matsumoto

Tomohiro Hasegawa

Tomohiro Yoneda

Teiichi Hirono

Kiyoto Ida

Shinichiro Noda

Yoshiharu Ikegami

Kouta Kabune

Seungsin Yoo

Takehito Tamaoka

Kazuhiko Fukushima

Hiroyoshi Teshima

Takahiro Kikuichi

Seung-Sin Yoo

Atsushi Mukai

Kazuo Tanaka

Tatsuya Akase

Mitsuhito Nishio

Takuro Kawano

Yuji Katsurayama

Noriaki Yamamoto

Naoki Matsuba

Noriaki Yamada

Satoru Otsu

There is provided a blower fan including a motor. In its bearing apparatus, the inner circumferential surface of the rotor cylindrical portionand the outer circumferential surface of the bearing portion are arranged to together define a seal gap. The bushingincludes a bushing base portionand a bushing cylindrical portion. The inner circumferential surface of the bushing cylindrical portionand the outer circumferential surface of the rotor cylindrical portionare arranged to together define a vertical gap. The vertical gap is arranged to have a minimum radial width equal to or smaller than a maximum width of the seal gap. A lower end portion of the rotor raised portionand an upper end portion of the bushing cylindrical portionare arranged to together define a second horizontal gap

Blower fan

A centrifugal fan includes an impeller, a motor portion, and a housing. The housing includes an upper plate portion, a lower plate portion arranged to have the motor portion fixed thereto; and a side wall portion. A flow control member is arranged to extend in a line along a boundary between an inside surface of the side wall portion and one of a lower surface of the upper plate portion and an upper surface of the lower plate portion. The flow control member includes a flow control surface arranged to extend radially outward from the one of the lower surface of the upper plate portion and the upper surface of the lower plate portion to the inside surface of the side wall portion while becoming more distant from the one of the lower surface of the upper plate portion and the upper surface of the lower plate portion.

Centrifugal fan having a flow control member

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

Growing community of inventors

Kyoto, Japan

Shunji Matsumoto