Nidec Copal Electronics Corporation

Yusuke Saito

Masatoshi Obayashi

Kyosuke Saso

Yuki Nakada

Toshiya Uchida

Kazuhiko Horie

Tadashi Okabe

An air blower capable of preventing a deformation of the vane wheel is provided. A cylindrical holder is provided on rotatable shaft. A vane wheel is provided on the outer circumference of the holder. The holder includes a top section including a plurality of first openings at one end thereof in the axial direction, and includes a flange including a plurality of second openings at the other end thereof, and the vane wheel includes first protrusions to be inserted into the first openings of the holder and fixed to the top section by deformed sections protruding from the first openings, and second protrusions to be inserted into the second openings of the holder and fixed to flange by deformed sections protruding from the second openings.

Air blower

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.

Magnetic bearing

The present invention is a coreless coil characterized in that a plurality of &#x3b1;-winding coils are formed by a first coil layer and a second coil layer that has a same shape and a same width as the first coil, each coil layer having a center opening, being laminated together. Each outer peripheral portion in a connection direction of the plurality of &#x3b1;-winding coils has a connection stepped portion that is point-symmetric in relation to a center axis line of a Z-axis (the Z-axis being an axis that, in relation to an X-axis that is a center of both connected end portions of the &#x3b1;-winding coil and passes through a lamination boundary line of the first coil layer and the second coil layer, is a center of both unconnected end portions of the &#x3b1;-winding coil and passes through the lamination boundary surface such as to be orthogonal to the X-axis) of the respective center opening. The plurality of &#x3b1;-winding coils are connected in an annular shape in a state in which the connection stepped portions overlap each other and are attached to each other. An object of the present invention is to improve the bonding force of the plurality of &#x3b1;-winding coils.

Growing community of inventors

Sano, Japan

Yusuke Saito