Electromagnetic steel sheet formed body, rotor core, rotor, rotating electrical machine, and vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 14, 2014
Grant Date -
Jan 24, 2013
app pub date -
Mar 15, 2011
filing date -
Mar 30, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electromagnetic steel sheet formed body to be used in a rotor core in which a forward rotational direction and a reverse rotational direction are assigned to a clockwise direction along a circumferential direction around an axial center when viewed from a visual line including the axial center, wherein a first hollow portion, a second hollow portion, and a rib partitioning the first hollow portion and the second hollow portion is formed at the electromagnetic steel sheet formed body such that permanent magnets constituting a plurality of poles are arranged substantially at regular intervals at predetermined pole pitch angles along the circumferential direction, and that the permanent magnet disposed at one pole is arranged in a segmented manner as the first permanent magnet and the second permanent magnet, when viewed from the visual line, and wherein the first hollow portion when viewed from the visual line is located closer to a side of the forward rotational direction than a centerline passing through a center angle of the pole pitch angle, and is arranged such that a longitudinal axis of the first hollow portion obliquely intersects in the clockwise direction with respect to a line perpendicular to the centerline.
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