Nidec Copal Electronics Corporation

Yuki Nakada

Hiroki Matsushita

Takatoshi Inoguchi

Yasuhiro Tobinai

Yusuke Saito

Kyosuke Saso

A motor attaching structure and a motor attaching method capable of preventing vibration from occurring are provided. A shaft holding a rotor of a motor rotatable thereon is fixed to a first holder. An annular second holder holds a core serving as a stator of the motor with a peripheral portion thereof being arranged between a case and the first holder. Screws to be used as fixing members fix the case, the first holder, and the second holder integrally to each other. The second holder further includes a holding portion which holds the stator and an absorbing portion located between the peripheral portion and the holding portion and possessing a thickness less than the peripheral portion.

Motor attaching structure and motor attaching method

According to one embodiment, a CPAP device includes a housing, a fan, and a sound absorbing material. The housing has a first air inlet and a first air outlet, and a flow channel guiding air sucked through the first air inlet to the first air outlet. The fan has a second air inlet and a second air outlet, the second air inlet is disposed in the direction intersecting the flow channel, and the second air outlet is disposed in the direction along the flow channel. The sound absorbing material is provided with a recess constituting a part of the flow channel and facing the second air inlet of the fan, the recess having a diameter which is greater than a diameter of the second air inlet of the fan and which is equal to or smaller than the width of the flow channel.

CPAP device

A fan unit produces an airflow. A pressure difference generating member causes a pressure difference in the airflow. A sensor detects a pressure difference between the air pressure on the upstream side of the pressure difference generating member and the air pressure on the downstream side thereof. A straightening plate is provided between the fan unit and the pressure difference generating member, and straightens the airflow produced by the fan unit. A straightening plate comprises a first fin and a second fin which are arranged along the airflow, and a lattice-like third fin which is arranged on the downstream side of the first fin and the second fin, and through which the airflow through the first fin and the second fin passes.

A magnetic bearing includes a ring-shaped first magnet, a ring-shaped second magnet, a first magnetic body and a second magnetic body. The ring-shaped first magnet is magnetized in an axial direction. The ring-shaped second magnet is concentrically arranged with the first magnet and is magnetized in the axial direction. The first magnetic body is provided on a first surface in the axial direction of the second magnet. The second magnetic body is provided on a second surface parallel to the first surface in the axial direction of the second magnet. A thickness of each of the first magnetic body and the second magnetic body is less than or equal to an acceptable fluctuation amount in the axial direction of the second magnet with respect to the first magnet and greater than or equal to 0.1 mm.

Growing community of inventors

Sano, Japan

Yuki Nakada