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公开(公告)号：US10432074B2
公开(公告)日：2019-10-01
申请号：US15285014
申请日：2016-10-04
申请人： MINEBEA CO., LTD.
发明人： Mikio Umehara , Yutaka Kamogi
摘要： A vibrator unit capable of being attached to a housing of a vibration generator includes a vibrator including a magnet and a back yoke arranged on or above the magnet, and an elastic member. The elastic member includes a vibrator attachment part attached to the vibrator, a housing attachment part attached to the housing, and an arm part coupling the vibrator attachment part and the housing attachment part, said arm part displaceably supporting the vibrator attachment part at least in a horizontal direction with respect to the housing attachment part. The back yoke includes a planar part arranged on or above the magnet and a holding part bending the planar part toward the frame from the planar part. The vibrator attachment part is held and embraced by the holding part.
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公开(公告)号：US10305357B2
公开(公告)日：2019-05-28
申请号：US15363879
申请日：2016-11-29
申请人： MINEBEA CO., LTD.
发明人： Manabu Nakamura
摘要： A vibrator includes a frame, a swing unit, and an elastic member. The swing unit is disposed within the frame and holds a magnet. The elastic member connects the swing unit and the frame. The swing unit is movable with respect to the frame while deforming the elastic member. The frame, the swing unit, and the elastic member are integrally molded with each other.
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公开(公告)号：US10083601B2
公开(公告)日：2018-09-25
申请号：US15226634
申请日：2016-08-02
申请人： MINEBEA CO., LTD.
CPC分类号： G08C17/02 , G06F3/017 , G06F3/0416 , G06F3/044 , G06F2203/04108 , H05B37/0227
摘要： A remote control device includes: a detector that detects a time-dependent change of a position of a recognition target object; a motion recognition unit that recognizes a gesture corresponding to the time-dependent change of the position of the recognition target object detected by the detector; a controller that generates a control signal based on the gesture recognized by the motion recognition unit; and a transmitter that transmits the control signal to an apparatus having a drivable portion to command a movement of the drivable portion.
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公开(公告)号：US10063167B2
公开(公告)日：2018-08-28
申请号：US15070565
申请日：2016-03-15
申请人： MINEBEA CO., LTD.
摘要： A motor drive controller includes: an advance-angle reference voltage generator that generates an advance-angle reference voltage; a back electromotive voltage comparator that generates phase signals of phases at a cross timing of the advance-angle reference voltage and back electromotive voltages of phases of a motor; and a controller that operates to perform a process including: detecting a rotation speed of the motor based on the phase signals of the phases; increasing the advance-angle reference voltage when the rotation speed moves from a high speed to a low speed; and decreasing the advance-angle reference voltage when the rotation speed moves from a low speed to a high speed.
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公开(公告)号：US20180198326A1
公开(公告)日：2018-07-12
申请号：US15914310
申请日：2018-03-07
申请人： MINEBEA CO., LTD.
发明人： Akio ANDO , Hirotaka SATO , Toshiyuki NISHIKATA
CPC分类号： H02K1/146 , H02K1/187 , H02K7/09 , H02K21/22 , H02K21/222
摘要： A motor includes a rotor frame; a shaft; first and second rotor magnets that are coupled with the shaft, formed separately, and spaced apart in an axial direction of the shaft; a stator portion having a stator core, a winding around the stator core, and a plurality of first salient pole portions; a torque holding portion facing the rotor magnets in a radial direction, being arranged between the rotor frame and the stator portion in the axial direction of the shaft, and having a plurality of second salient pole portions; and a circuit board arranged, in the axial direction of the shaft, on a side of the stator portion opposite the rotor frame. An electronic component is arranged at the circuit board.
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公开(公告)号：US10020705B2
公开(公告)日：2018-07-10
申请号：US14831445
申请日：2015-08-20
申请人： MINEBEA CO., LTD.
发明人： Tomoaki Nakano
CPC分类号： H02K5/1675 , H02K7/09
摘要： A brushless motor is provided with: a shaft; a rotor; a stator; a cylindrical oil-retaining bearing; a bearing holding part; an attraction magnet disposed at a position facing one end of the shaft and configured to attract the shaft by a magnetic force; and a thrust plate disposed between the attraction magnet and the one end of the shaft, wherein a magnet holder made of a magnetic material is formed integrally to the bearing holding part, the magnet holder being installed with the attraction magnet, and wherein a side of the magnet holder, on which the attraction magnet is installed, is covered by a material for forming the bearing holding part, except for an installation surface on which the attraction magnet is installed, or for a proximity of the installation surface.
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公开(公告)号：US09886975B2
公开(公告)日：2018-02-06
申请号：US15263943
申请日：2016-09-13
申请人： MINEBEA CO., LTD.
发明人： Weihong Yang , Daiki Kobayashi
CPC分类号： G11B5/4813 , F16C19/06 , F16C19/54 , F16C33/80 , F16C35/07 , G11B19/2036
摘要： A hard disk drive according to an embodiment of the present invention includes a pivot assembly bearing device with a shaft, rolling bearings and a sleeve, a cylindrical convex portion formed in a cover member at the upper side, protruding inward, and fixed to an upper end surface of the shaft, a convex portion formed on a base member at the lower side, protruding inward, and fixed to a lower end surface of the shaft, and a labyrinth gap formed by opposing an outer peripheral surface of the convex portion to an inner peripheral surface of a sleeve in a radial direction and/or by opposing an outer peripheral surface of the convex portion to the inner peripheral surface of the sleeve in a radial direction.
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公开(公告)号：US09787231B2
公开(公告)日：2017-10-10
申请号：US14507896
申请日：2014-10-07
申请人： MINEBEA CO., LTD.
发明人： Keiichi Katayama , Tomohiro Inoue , Shuhei Nishi
CPC分类号： H02P6/24
摘要： A motor driving device includes a control unit which outputs a pre-driving signal to control a motor based on command information of an input target number of rotations and detection information of a number of rotations of the motor, and a motor driving unit which drives the motor based on the pre-driving signal. The control unit includes a speed control circuit which outputs speed command information based on the command information of the target number of rotations and the detection information, a stop control circuit which when an input of the command information of the target number of rotations is stopped, outputs stop command information after a predetermined time elapses from detection of stop of the motor, and a driving signal generation circuit which generates a control signal based on the stop command information and the speed command information.
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公开(公告)号：USD791819S1
公开(公告)日：2017-07-11
申请号：US29557174
申请日：2016-03-07
申请人： MINEBEA CO., LTD.
设计人： Yoshihiro Sagawa , Koshi Fujiura
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公开(公告)号：US09692280B2
公开(公告)日：2017-06-27
申请号：US14301818
申请日：2014-06-11
申请人： MINEBEA CO., LTD.
发明人： Takaaki Ochiai
CPC分类号： H02K15/022 , G01D5/2046 , H02K1/246 , Y10T29/4902
摘要： A production method for a rotor core for a VR type resolver has a structure in which one protrusion is formed on an inner edge thereof in which the rotor cores can be rotated and laminated without increasing cost. In a production method of a rotor core for a VR type resolver, a plurality of tabular rotor core pieces are laminated. In this case, in the rotor core pieces, four protrusions are simultaneously formed, one of them is left, the remainder thereof is removed, and rotating lamination is carried out.
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