公开(公告)号：US10432074B2

公开(公告)日：2019-10-01

申请号：US15285014

申请日：2016-10-04

Applicant: MINEBEA CO., LTD.

Inventor： Mikio Umehara ,  Yutaka Kamogi

IPC: H02K33/06 ,  H02K33/16 ,  B06B1/04

Abstract: 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.

公开(公告)号：US10305357B2

公开(公告)日：2019-05-28

申请号：US15363879

申请日：2016-11-29

Applicant: MINEBEA CO., LTD.

Inventor： Manabu Nakamura

IPC: H02K33/00 ,  H02K33/16 ,  H02K5/124 ,  B06B1/04 ,  H02K5/04 ,  H02K33/02 ,  G04C3/10 ,  H02K33/06

Abstract: 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.

公开(公告)号：US10090737B2

公开(公告)日：2018-10-02

申请号：US14297985

申请日：2014-06-06

Applicant: Minebea Co., Ltd.

Inventor： Helmut Schneider ,  Jurgen Schill

IPC: H02K5/08 ,  H02K11/40 ,  H02K11/00

Abstract: A stator for an electrical machine with a stator body (2, 102) and a ground contact (3, 103) which is electrically connected to the stator body, wherein the stator body is arranged in a motor housing (4, 104), which is formed from plastic material. In order to have a compact stator that is easy to install and at the same time has a reliable contact to a ground contact, it is provided that the motor housing has a stator holder (7, 107), which receives the stator body in the operating position, and is located on the inner surface of at least one of its housing parts, and to arrange and fix the ground contact at the inner circumference of the stator holder, facing the stator body, so that the stator body can be electronically contacted by the ground contact.

公开(公告)号：US10083601B2

公开(公告)日：2018-09-25

申请号：US15226634

申请日：2016-08-02

Applicant: MINEBEA CO., LTD.

Inventor： Yoshihiro Nakamura ,  Kohei Nishibori

IPC: G06F3/00 ,  G08C17/02 ,  G06F3/01 ,  G06F3/044 ,  G06F3/041 ,  H05B37/02

CPC classification number: G08C17/02 ,  G06F3/017 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04108 ,  H05B37/0227

Abstract: 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.

公开(公告)号：US10063167B2

公开(公告)日：2018-08-28

申请号：US15070565

申请日：2016-03-15

Applicant: MINEBEA CO., LTD.

Inventor： Hiroyuki Kaidu ,  Toshihiro Tamitsuji

IPC: H02P23/12 ,  H02P7/00 ,  H02P6/182 ,  H02P6/15

CPC classification number: H02P6/182 ,  H02P6/157

Abstract: 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.

公开(公告)号：US20180198326A1

公开(公告)日：2018-07-12

申请号：US15914310

申请日：2018-03-07

Applicant: MINEBEA CO., LTD.

Inventor： Akio ANDO ,  Hirotaka SATO ,  Toshiyuki NISHIKATA

IPC: H02K1/14 ,  H02K21/22 ,  H02K1/18 ,  H02K7/09

CPC classification number: H02K1/146 ,  H02K1/187 ,  H02K7/09 ,  H02K21/22 ,  H02K21/222

Abstract: 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.

公开(公告)号：US10020705B2

公开(公告)日：2018-07-10

申请号：US14831445

申请日：2015-08-20

Applicant: MINEBEA CO., LTD.

Inventor： Tomoaki Nakano

IPC: H02K7/09 ,  H02K5/167

CPC classification number: H02K5/1675 ,  H02K7/09

Abstract: 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.

公开(公告)号：US09886975B2

公开(公告)日：2018-02-06

申请号：US15263943

申请日：2016-09-13

Applicant: MINEBEA CO., LTD.

Inventor： Weihong Yang ,  Daiki Kobayashi

IPC: G11B5/48 ,  G11B19/20

CPC classification number: G11B5/4813 ,  F16C19/06 ,  F16C19/54 ,  F16C33/80 ,  F16C35/07 ,  G11B19/2036

Abstract: 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.

公开(公告)号：USD806303S1

公开(公告)日：2017-12-26

申请号：US29566974

申请日：2016-06-03

Applicant: MINEBEA CO., LTD.

Designer： Nobuki Matsui

公开(公告)号：US09787231B2

公开(公告)日：2017-10-10

申请号：US14507896

申请日：2014-10-07

Applicant: MINEBEA CO., LTD.

Inventor： Keiichi Katayama ,  Tomohiro Inoue ,  Shuhei Nishi

IPC: H02P8/12 ,  H02P6/24 ,  H02P1/52

CPC classification number: H02P6/24

Abstract: 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.