Minebea Mitsumi Inc.

Matsushita Electric Industrial Co., Ltd.

Tsuyoshi Kano

Takao Yoshitsugu

Toshiyuki Nishikata

Michihiro Shimizu

Yuta Amagi

Koichiro Ohata

Hitoshi Iwata

Shoma Yamanishi

Naoki Ohsawa

Kumio Masuda

Seiji Mitamura

Yuya Senda

A rotating body is shorter in radial direction than in axial direction. The inner circumferential surfaces of a first bearing and a second bearing are fixed at an outer circumferential surface of the shaft member. In the axial direction, the outer diameter of the shaft member is substantially the same from a part, of the shaft member, opposing the first bearing to a part, of the shaft member, opposing the second bearing, and the inner and outer diameters of the rotating body are substantially the same from an end part, of the rotating body, on the first bearing side to an end part, of the rotating body, on the second bearing side. In the axial direction, one of stators is disposed at a central part (C) of the shaft member, one of magnets is disposed at a central part (C) of the rotating body.

Rotating device

Provided is a rotating device having excellent performance of cooling a heat generation source. Included are a shaft member, a rotating body having a tubular shape and rotatable about the shaft member, a bearing supporting the rotating body with respect to the shaft member, and a coupling member disposed between the bearing and the rotating body in a radial direction (cd). The coupling member includes a ventilation channel communicating with an inside and an outside of the rotating body.

Rotating machine

There is provided a motor having a sensor disposable at a desired position. The motor comprises a frame (), a rotor, a stator, a substrate () provided in the stator, and a sensor () provided at the substrate (). The substrate () includes a surface facing the rotor, and an outer peripheral portion (). In the outer peripheral portion () of the substrate (), a contact portion () contacting an inner peripheral portion () of the frame () is provided. In the inner peripheral portion () of the frame (), contacted portions (), () contacting the outer peripheral portion () of the substrate () are provided. In at least one of the contact portion () and the contacted portion (), (), a projecting portion (), () projecting toward another of the contact portion and the contacted portion is provided.

Motor

A rotating polygon mirror driving apparatus has a rotor having a rotating polygon mirror fixed thereto, a rotational shaft and a rotor magnet; a bracket having a base plate provided opposite to the rotor magnet and a collar forming a bearing holding portion of a resin outserted to the base plate and made; and a bearing fitted to the bracket so as to support the rotational shaft. The driving apparatus can be decreased in cost and thickness while maintaining excellent rotational precision and mechanical precision.

Rotating polygon mirror driving apparatus

Growing community of inventors

Yasugi, Japan

Tsuyoshi Kano