Meidensha Corporation

Mototsugu Omura

Keisuke Matsuo

Tadahiro Matsumoto

Takashi Okitsu

Daiki Matsuhashi

Morio Takada

A housing of a rotating electrical machine accommodates a stator and a rotor, and forms a first space communicating with a gap on a one end-side of the stator and a second space communicating with the gap on another end-side of the stator. The stator has an intermediate duct communicating with the gap. The housing has a one end-side intake port; a one end-side exhaust port; an another end-side intake port; an another end-side exhaust port; and an air intake port. The rotating electrical machine includes a one end-side throttle mechanism to suppress flow of air from the one end-side intake port to the first space more than a flow on the one end-side exhaust port side; and an another end-side throttle mechanism to suppress flow of air from the another end-side intake port to the second space more than a flow on the another end-side exhaust port side.

Rotating electrical machine

The present invention comprises a permanent magnet () that is disposed around a rotor shaft (), a retaining ring () that is press-fitted around the outside of the permanent magnet () from one end of the rotor shaft () so as to retain the permanent magnet () against the rotor shaft (), and an end plate () that is provided adjacent to the permanent magnet () in the axial direction of the rotor shaft () and guides the press-fitted retaining ring (), maintaining planar contact with the inner circumferential surface thereof, toward the permanent magnet () while causing the retaining ring () to expand as the retaining ring () progresses from one end of the rotor shaft () to the other end of the rotor shaft (). Concentration of stress on the retaining ring () during press-fitting can thus be minimized.

Growing community of inventors

Tokyo, Japan

Mototsugu Omura