Patent application number | Description | Published |
20080211338 | ELECTRICAL ROTATING MACHINE - An electrical rotating machine with permanent magnets which is configured such that the ratio of the number of magnetic poles of permanent magnets | 09-04-2008 |
20100052460 | ELECTRICAL ROTATING MACHINE - In a permanent magnet type electrical rotating machine having coils | 03-04-2010 |
20100253178 | PERMANENT-MAGNET SYNCHRONOUS MOTOR - The present invention can achieve a highly efficient permanent-magnet synchronous motor that can obtain output in a high-speed area without prolonging the axis of the permanent-magnet synchronous motor. | 10-07-2010 |
20110163624 | PERMANENT MAGNET TYPE ROTARY ELECTRIC MACHINE - A rotary electric machine, wherein the rotation direction of a rotor is a defined direction, a groove is provided in a rotor core on the radial outside with respect to permanent magnets, and the groove is provided in a position inclined from the centerline between the permanent magnets within a magnetic pole head and at the same time in a position excluding an end portion of a permanent magnet insertion hole on the radial outside, in order to enable a reduction in a no-load induced electromotive force and prevention of a decrease in output. | 07-07-2011 |
20110163641 | PERMANENT-MAGNET SYNCHRONOUS MOTOR - The present invention can achieve a highly efficient permanent-magnet synchronous motor that can obtain output in a high-speed area without prolonging the axis of the permanent-magnet synchronous motor. | 07-07-2011 |
20130257200 | In-Vehicle Motor and Electric Power Steering Device Including the Same - An in-vehicle motor includes a busbar for connecting plural concentrated-winding stator coils. The busbar includes: an arm extending perpendicular to a longitudinal direction of the busbar; a coil holder provided at a tip of the arm; and a mechanically-twisted portion provided on the arm. | 10-03-2013 |
20130264140 | ON-VEHICLE ROTARY ELECTRIC MACHINE AND ELECTRIC POWER STEERING SYSTEM - An electrical motor includes: a cylindrical stator core arranged so as to surround a periphery of a rotor via a space, and having a plurality of teeth formed in an inner periphery thereof; a bobbin installed in each of the plurality of teeth; a coil wound around each of the bobbins installed in the teeth; a bottomed cylindrical chassis having a bottom faced with one of end portions in the axial direction of the stator core, and holding an outer periphery of the stator core; and a busbar mold provided with a busbar terminal. An engaging hole is formed at least in either the bottom or the busbar mold at a position facing the bobbin, and an engaging projection that engages with the engaging hole is formed in an opposing part that faces the engaging hole in the bobbin. | 10-10-2013 |
20140009041 | ROTATING ELECTRICAL MACHINE - Inner rings of bearings arranged at both ends of a rotor shaft are fixed to the rotor shaft, and outer rings of both of the bearings are arranged at bearing holding parts movably in an axial direction of the rotor. A preload imparting member is attached to one of the bearings, the preload imparting member being configured to bias the rotor shaft in one direction and to apply a biasing force to make a housing and a flange, which constitute a chassis, come close to each other. | 01-09-2014 |
20140062254 | Permanent Magnet Rotating Electrical Machine - A permanent magnet rotating electrical machine is configured to include a stator that includes a stator core and a winding wound around a teeth portion of the stator core, a rotor rotatably arranged with respect to the stator with a gap, and in which a rotor core and a plurality of permanent magnets having different poles are alternately arranged in a circumferential direction, and a groove provided in a surface of the rotor core, the surface facing the stator, in a manner symmetric about a center line of the permanent magnet in the circumferential direction. | 03-06-2014 |
20140084734 | Rotating Electrical Machine, Method for Manufacturing Magnetic Pole Piece - The present invention, in a rotating electrical machine having a configuration in which a plurality of magnetic pole pieces is attached along outer perimeters of the rotating axis, provides a structure of rotating electrical machine with small cogging torque by providing a skew in magnetic pole pieces. The rotating electrical machine according to the present invention comprises a plurality of magnetic pole pieces disposed with a skew angle and a cylindrical attachment ring for attaching the magnetic pole pieces, wherein an engaging portion provided at outer perimeters of the attachment ring and an engaging portion included in the magnetic pole pieces are both extended along the rotating axis. | 03-27-2014 |