Nidec Corporation

Sharp Kabushiki Kaisha Corporation

Makoto Kobayashi

Ryota Hayashida

Shinsuke Hamano

Yoshiaki Oguma

Masamune Hiraki

A fan includes a stationary portion, a rotating portion, and an impeller arranged to rotate about a central axis together with the rotating portion to produce an axial air current. The rotating portion includes a rotor holder. The impeller includes a cup portion arranged to cover the rotor holder and a plurality of blades arranged on an outer circumference of the cup portion. The cup portion includes a cup cover portion arranged to extend radially outward from the central axis; a cup cylindrical portion being substantially cylindrical in shape, and arranged to extend in an axial direction from an outer edge portion of the cup cover portion; and a cup through hole arranged to extend through the cup portion at a position overlapping with a portion or boundary between the cup cover portion and the cup cylindrical portion.

A fan motor includes a motor; an impeller; a motor control board; an AC/DC converter board; electronic components mounted on the AC/DC converter board; and a housing arranged to contain the motor, the impeller, the motor control board, and the AC/DC converter board. The housing includes a base portion arranged to hold a stationary portion of the motor on an axially upper side thereof; and a case portion arranged to extend to assume a tubular shape on an axially lower side of the base portion. The AC/DC converter board is arranged in an interior space of the case portion. At least a portion of the interior space is filled with a resin material. Surfaces of the AC/DC converter board and the electronic components are covered with the resin material. The fan motor further includes a projecting portion arranged to project into the interior space.

Fan motor

An extremely useful respirator including a generator circuit for generating signals when the unit either becomes faulty or the power service is suddenly interrupted. The present device is also for opening the respiration circuit in response to the signals thus generated. The respirator reflecting the preferred embodiment eliminates blockage of the respiration circuit when the respirator is faulty or the power service is interrupted during use, thus improving the safety of the patients by applying a simplified mechanism.

Growing community of inventors

Kyoto, Japan

Makoto Kobayashi