Patent application number | Description | Published |
20080284288 | ELECTRIC ROTATING MACHINE FOR VEHICLE - An electric rotating machine for a vehicle capable of reducing influence of leakage flux on a turning angle detector as much as possible and detecting a turning angle more accurately is provided. The electric rotating machine for a vehicle includes: a rotor core | 11-20-2008 |
20090102304 | ROTOR OF ROTATING ELECTRICAL MACHINE AND MANUFACTURING METHOD THERE FOR - A rotor of a rotating electrical machine is provided in which neither deterioration nor fluctuation in the cogging torque is caused and that causes neither physical enlargement nor cost increase. The rotor of a rotating electrical machine, provided with a plurality of magnetic poles | 04-23-2009 |
20090121570 | MOTOR FOR AN ELECTRIC POWER STEERING APPARATUS - A motor for an electric power steering apparatus can ensure an appropriate preload to an outer race of a rolling element bearing by adjusting the thickness of a spacer without replacement of a wave washer for a change in an axial dimension between a bottom surface of a bearing box and the bearing. The motor includes a rotor, a casing that receives the rotor and has the bearing box in which the bearing rotatably supporting a shaft of the rotor is received, an annular wave washer that is arranged between the bottom surface of the bearing box and the bearing, and applies a preload to the outer race of the bearing, and an annular spacer that is arranged between the bottom surface of the bearing box and the bearing so as to be in abutment with the wave washer for adjusting the preload applied to the outer race. | 05-14-2009 |
20090133955 | ELECTRIC POWER STEERING APPARATUS - A drive control unit alone can be replaced without detaching an electric power steering apparatus from a gear housing. A motor housing of an electric motor, which outputs assist torque to a steering wheel of a vehicle, and a drive housing of the drive control unit, which controls the driving of the electric motor, are coupled to each other at a mating surface in a surface to surface contact manner, and the drive housing and the gear housing are coupled with each other on the same axis. A location of connection, at which a power supply input terminal block of the electric motor and power supply bus bars of the drive control unit are connected to each other by us of screws, is arranged at a joint location at which the motor housing and the drive housing are joined to each other by screws. | 05-28-2009 |
20090195104 | PERMANENT MAGNET SYNCHRONOUS MOTOR - To obtain a permanent magnet synchronous motor suitable for an electric power steering system, in which the magnet thickness (magnet used amount) can be reduced while securing demagnetization resistance and torque characteristics. In a permanent magnet synchronous motor including a rotor in which plural permanent magnets are arranged at an outer periphery of a rotor core, which is supported so as to rotate freely, and a stator provided at the outside of the stator and having stator windings | 08-06-2009 |
20100033044 | MOTOR FOR AN ELECTRIC POWER STEERING APPARATUS - A motor for an electric power steering apparatus is obtained which can reduce the number of parts required. The motor has terminals for electrically connecting between leads and a stator coil. Each terminal is a band-shaped conductive member that has a pair of connector side terminal end portions at its opposite ends, respectively, when developed, and a plurality of stator side terminal portions protruding to one side of the conductive member along a longitudinal direction thereof. Each terminal is deformed in its thickness direction into a circular shape, and the connector side terminal end portions being bent in the same plane are connected with each other to form a connector side terminal portion. The connector side terminal portion is connected to the leads, and the stator side terminal portions are connected to the stator coil. | 02-11-2010 |
20100244605 | PERMANENT MAGNET TYPE ROTATING ELECTRICAL MACHINE AND ELECTRIC POWER STEERING DEVICE - A permanent magnet type rotating electric machine includes: a rotor including a rotor core having a polygonal shape and a plurality of permanent magnets; and a stator including a stator core and armature windings, in which, when the number of poles is M, the number of slots is N, M permanent magnets are sequentially numbered from first to M-th in a circumferential direction, and a positional shift amount in the circumferential direction from a corresponding one of equiangularly arranged reference positions, each being at the same radial distance from a center of a rotating shaft, for an i-th (i=1, 2, . . . , M) permanent magnet is h | 09-30-2010 |
20100244607 | ROTOR OF ROTARY ELECTRIC MACHINE AND METHOD OF MANUFACTURING THE SAME - In a rotor of a permanent magnet rotary electric machine, a bonding portion between each of segment shaped magnets and an outer circumference face of a rotor core is provided in axial symmetry with respect to the rotor axial center and has a bonding area equal to or larger than a half of a contact area between each of the segment shaped magnets and the outer circumference face of the rotor core; and a biasing force is applied to an outer circumference face of the segment shaped magnets by a ring. | 09-30-2010 |
20100244611 | PERMANENT-MAGNETIC TYPE ROTARY ELECTRIC MACHINE - A permanent-magnetic type rotary electric machine includes a stator having teeth that are arranged in the peripheral direction thereof and around which armature windings of plural phases are wound, and a rotor having plural permanent magnets arranged so that the poles of the permanent magnets are alternately different in the peripheral direction thereof, higher harmonic waves being contained in a no-load induced voltage waveform. A (6 | 09-30-2010 |
20100288577 | MOTOR FOR ELECTRIC POWER STEERING DEVICE WITH INTEGRATED CONTROLLER AND ELECTRIC POWER STEERING DEVICE - A motor for an electric power steering device with an integrated controller ( | 11-18-2010 |
20110066332 | ELECTRIC POWER STEERING APPARATUS AND CONTROL DEVICE INTEGRATED-TYPE ELECTRIC MOTOR - An electric power steering apparatus and control device integrated-type electric motor includes an electric motor driving circuit constituted by a plurality of semiconductor power elements and controlling electric power supplied to an armature winding of an electric motor, a switch device for opening and closing a connection between an input terminal of the electric motor driving circuit and an external power source, and another switch device for opening and closing the armature winding, wherein at least one of both the switch devices is constituted by a semiconductor switch element, and the power elements and the semiconductor switch element are mounted on a board attached to a metallic case. | 03-17-2011 |
20110067945 | ELECTRIC POWER-STEERING APPARATUS MOTOR APPARATUS - A first end region of a rotating shaft of a rotor of a brushless motor is inserted through a control apparatus housing space, and is supported by a first bearing that is held by a first bearing box that is disposed on a first surface side of a base portion of a first housing that configures the control apparatus housing space, and a second end is supported by a second bearing that is held by a second bearing box that is disposed in a motor frame that configures a motor housing space. A control apparatus is disposed inside the control apparatus housing space, and an end portion of the rotating shaft that projects out through the first bearing constitutes a coupling portion. | 03-24-2011 |
20110278995 | MOTOR FOR AN ELECTRIC POWER STEERING APPARATUS - Provided is a motor for an electric power steering apparatus, in which vibrations and noises are suppressed. The motor for an electric power steering apparatus includes: a motor section ( | 11-17-2011 |
20120236503 | POWER SEMICONDUCTOR MODULE AND ITS ATTACHMENT STRUCTURE - A power semiconductor module includes: a first metal substrate on which a power semiconductor device is mounted; a second metal substrate on which a power semiconductor device is not mounted; and an electrically insulating resin package which seals the first metal substrate and the second metal substrate. The back surface of the first metal substrate on the side opposite to the mounting surface of the power semiconductor device is made to expose outside the resin package to form a heat dissipation surface. | 09-20-2012 |
20130140964 | MOTOR FOR ELECTRIC POWER STEERING DEVICE - A motor for an electric power steering device, includes: a housing side bearing which is placed on the output side of a shaft of a rotor placed in a frame, and is supported by a housing connected to the frame; and a frame side bearing which is placed on the opposite output side of the shaft of the rotor, and is composed of an outer ring and an inner ring supported by the frame. The motor is controlled by an electronic control unit which is coaxially placed with the rotor, the motor including: a bearing box which supports the frame side bearing, and is formed with a closed end section between the closed end section and the side of the frame side bearing; an axial elastic body which is placed on the closed end section of the bearing box, and applies a preload in an axial direction to the outer ring of the frame side bearing; and a radial elastic body which is placed on the outer circumferential side of the outer ring of the frame side bearing, and applies a preload in a direction perpendicular to the axial direction. | 06-06-2013 |
20130141871 | POWER MODULE FOR ELECTRIC POWER STEERING AND ELECTRIC POWER STEERING DRIVE CONTROL APPARATUS USING THE SAME - An object is to release heat efficiently to heat-resistance abilities of individual components by enhancing a heat-radiation performance of power circuit components forming a power module ( | 06-06-2013 |
20130187517 | ELECTRIC POWER STEERING DEVICE - An electric power steering device includes a first housing | 07-25-2013 |
20130200827 | MOTOR CONTROL DEVICE, CURRENT CONTROL METHOD APPLIED TO MOTOR CONTROL DEVICE, AND ELECTRIC POWER STEERING DEVICE USING MOTOR CONTROL DEVICE - Provided is a motor control device ( | 08-08-2013 |
20130249356 | MOTOR DRIVE APPARATUS - A motor drive control apparatus | 09-26-2013 |
20130300235 | ROTATING ELECTRICAL MACHINE INCORPORATING DRIVE DEVICE - There is provided a drive-device-integrated rotating electrical machine, in which a radially protruding portion ( | 11-14-2013 |
20130334906 | DRIVE UNIT INTEGRATED ROTATING ELECTRICAL MACHINE - To obtain a drive unit integrated rotating electrical machine that makes it easier to connect power circuits and achieves not only excellent vibration resistance but also excellent heat releasing properties. | 12-19-2013 |
20140145547 | PERMANENT MAGNET MOTOR - Provided is a permanent magnet motor that realizes reduction of both cogging torque and torque ripple, and also downsizing and weight reduction together with torque ripple reduction. When two sets of three-phase armature windings are defined such that a first armature winding | 05-29-2014 |
20140151146 | MOLD MODULE UTILIZED AS POWER UNIT OF ELECTRIC POWER STEERING APPARATUS AND ELECTRIC POWER STEERING APPARATUS - There is provided a mold module and an electric power steering apparatus in which the temperature distribution in electronic components such as semiconductor chips utilized in an electronic relay and an inverter circuit unit is equalized and hence the heat radiation performance can be improved. In a mold module according to the present invention, a plurality of terminals for forming wiring leads and a plurality of electronic components mounted on the respective terminals are molded with a molding resin; at least part of the plurality of terminals are exposed at the rear side of the molding resin; an electric power steering apparatus according to the present invention utilizes the mold module. | 06-05-2014 |
20140191628 | PERMANENT MAGNET MOTOR - A permanent magnet motor in which electromagnetic excitation force of low spatial order is reduced, and influence of a magnetomotive force harmonic of a rotor and torque ripple is reduced. One set of armature windings receives current from a first inverter, and another set of armature windings receives current from a second inverter. Where a pole number of a rotor is M and the number of slots of a stator core is Q, M and Q satisfy M07-10-2014 |
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20140239780 | INTEGRAL-TYPE ELECTRIC POWER STEERING DEVICE - An integral-type electric power steering device is configured in such a way that a motor component ( | 08-28-2014 |
20140246999 | MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE - There is provided a motor control device for controlling a motor including plural sets of windings, which is configured so that, when a fault detection means detects a fault, inverters in the normal side other than in the fault side are continued to be controlled by normal-time current control means and further, inverters in the fault side are continued to be controlled by fault-time voltage commands generated by a fault-time current control means configured with a fault-time normal-side command generator and a fault-time fault-side command generator, so as to emphasis a torque ripple of the motor when a winding fault of the motor or an inverter fault occurs, to thereby cause a user to surely recognize the fault. | 09-04-2014 |
20150076950 | ROTOR FOR MAGNETIC ROTATING ELECTRICAL MACHINE, PRODUCTION METHOD FOR SAME, AND DEVICE - A method of manufacturing a rotor for a magnet type rotating electrical machine includes the steps of: cutting and laminating pieces of the core of the rotor, to thereby form a core ( | 03-19-2015 |