US 12,442,380 B2
Blower and vacuum cleaner
Ryuhei Hori, Kyoto (JP); and Hiroki Yokozawa, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Filed by NIDEC CORPORATION, Kyoto (JP)
Filed on Jul. 24, 2024, as Appl. No. 18/783,341.
Claims priority of application No. 2023-124965 (JP), filed on Jul. 31, 2023.
Prior Publication US 2025/0043791 A1, Feb. 6, 2025
Int. Cl. F04D 29/04 (2006.01); A47L 5/22 (2006.01); F04D 25/06 (2006.01)
CPC F04D 25/062 (2013.01) [A47L 5/22 (2013.01); F04D 25/0646 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A blower comprising:
a motor including a rotor having a shaft, and a stator disposed on a radially outer side the rotor;
an impeller that is connected to the shaft and rotates about the shaft;
a first housing disposed between the motor and the impeller; and
a second housing disposed on a side opposite to the first housing across the motor;
wherein
the second housing includes:
a bearing holding portion that holds a bearing of the shaft;
a stator holding portion that is disposed on an outer side of the bearing holding portion in a radial direction of the shaft, and holds the stator; and
a coupling portion that couples the bearing holding portion and the stator holding portion;
assuming that a dimension in an axial direction of the shaft is a first dimension and a dimension in a circumferential direction of the shaft is a second dimension among dimensions at an end portion of the coupling portion on a bearing holding portion side, the first dimension is smaller than the second dimension, and
the coupling portion has a portion whose dimension in the axial direction is smaller than the first dimension, wherein the dimension of the coupling portion in the axial direction adjacent to the bearing holding portion side is greater than the dimension of the coupling portion in the axial direction distal from the bearing holding portion.