Electric Fan
AssigneeNidec Corporation
InventorYusuke Yoshida
Life of this patent
Estimating the term…
Abstract
An electric fan includes an impeller generating an air flow by its rotation, a motor rotating the impeller around a rotation axis, a circuit board with a driving circuit for the motor mounted thereon, and a housing. The housing accommodates the impeller, the motor, and the circuit board. A motor supporting portion of the housing, which supports the motor and the circuit board, includes a plate-like portion and an outer wall formed along an outer edge of the plate-like portion. The plate-like portion has at least one of a cutout portion formed on an outer edge thereof and a through hole formed therein. A reinforcement wall is formed along an outer edge of the through hole and/or the cutout portion.
Claims7
An electric fan comprising:
- an impeller generating an air flow by its rotation;
- a motor, to which the impeller is attached, rotating the impeller around a rotation axis;
- a circuit board with a driving circuit for the motor mounted thereon;
- and
- a housing accommodating the impeller, the motor, and the circuit board therein and surrounding the impeller to form a passage for the air flow between the housing and the impeller, wherein:
- the housing includes a motor supporting portion opposed to the motor and supporting the motor and the circuit board;
- the motor supporting portion includes a plate-like portion and an outer wall formed along an outer edge of the plate-like portion, the plate-like portion having at least one of a through hole formed therein and a cutout portion formed on an outer edge thereof;
- and
- the housing includes a reinforcement wall formed along an outer edge of the at least one of the through hole and the cutout portion.
Dependencies are inferred from the claim text.