To provide an inner rotor type blower fan capable of miniaturizing the size in a radial direction while suppressing the increase of the size in an axial direction.
A blower fan 100 includes an impeller cup 11; a shaft 30 with an end arranged to project axially upward from the impeller cup 11; a rotor magnet 22 fixed to the shaft 30; a first bearing 40a and a second bearing 40b arranged above and below, respectively, the impeller cup 11; a first bearing support portion 50a and a second bearing support portion 50b arranged to support the first and second bearings 40a, 40b, respectively; and a first housing 51a and a second housing 51b arranged on axially upper and lower sides, respectively. The first and second housings 51a, 51b are joined to each other at an axial level higher than upper end of a second joining portion 52b arranged to join the second housing 51b and the second bearing support portion 50b to each other.
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
Daisuke Kawabe
Masanori Hasegawa
Tsuguya Iwashita
Koji Fukumoto
Ryo Maeda
Mawaki Hachizo
Yukichi Matsunaga
Kenji Kawakita
Shohei Okazawa