公开(公告)号：US20150042258A1

公开(公告)日：2015-02-12

申请号：US14301579

申请日：2014-06-11

Applicant: MINEBEA CO., LTD.

Inventor： Kazuo TAKADA ,  Takayuki MATSUI ,  Haruka MIYAJI

IPC: H02P8/24 ,  H02P8/10 ,  H02P8/38

CPC classification number: H02P8/24 ,  H02P8/10 ,  H02P8/28 ,  H02P8/38

Abstract: There is provided a control device for a stepping motor, configured to apply an excitation current to multiple coils to rotate a rotor. The control device includes a drive unit configured to apply a drive voltage to the coils, and a control unit configured to control the drive voltage applied by the drive unit, wherein the control unit includes a stop control unit configured to perform, during a hold period of a stop period of the stepping motor, a stop control which gradually decreases a magnitude of the excitation current flowing in the coils such that the rotor moves to a predetermined stop position, and wherein the stop control unit is configured to perform the stop control such that a variation amount of the excitation current per unit time becomes a predetermined threshold value for the stop period or less.

Abstract translation: 提供了一种用于步进电动机的控制装置，其被配置为向多个线圈施加激励电流以使转子旋转。 所述控制装置包括被配置为向所述线圈施加驱动电压的驱动单元和被配置为控制由所述驱动单元施加的驱动电压的控制单元，其中所述控制单元包括停止控制单元，所述停止控制单元被配置为在保持期间 步骤电动机的停止期间，使所述线圈中流过的励磁电流的大小逐渐减小以使得所述转子移动到规定的停止位置的停止控制，所述停止控制部被配置为进行所述停止控制， 每单位时间的激励电流的变化量成为停止期间以下的预定阈值。

公开(公告)号：US20130194762A1

公开(公告)日：2013-08-01

申请号：US13718473

申请日：2012-12-18

Applicant: Minebea Co., Ltd.

Inventor： Hidetoshi HIJIKATA ,  Takayuki MATSUI ,  Kazuo TAKADA ,  Haruka MIYAJI

IPC: H05K1/02

CPC classification number: H05K1/0271 ,  H05K1/028 ,  H05K1/0281 ,  H05K1/147 ,  H05K2201/10204

Abstract: A motor control device includes a circuit board having a control circuit controlling electric power to be supplied to a motor, a base fixedly supporting the circuit board, a flexible printed circuit supplying electric power to the motor, a pin terminal disposed on the circuit board, being electrically connected with the control circuit, a dummy pin terminal disposed on the circuit board, being electrically free from the control circuit, a wiring pattern land disposed on the FPC, being electrically connected with the pin terminal, and a dummy wiring pattern land disposed on the FPC, being connected with the dummy pin terminal.

Abstract translation: 一种电动机控制装置，包括：电路板，其具有控制供给电动机的电力的控制电路;固定地支撑所述电路板的基座;向所述电动机供给电力的柔性印刷电路;配置在所述电路基板上的销子端子; 与所述控制电路电连接，设置在所述电路板上的虚拟针端子与所述控制电路电气相连，设置在所述FPC上的布线图案区域与所述引脚端子电连接，以及设置的虚拟布线图案区域 在FPC上，与虚拟针端子连接。

公开(公告)号：US20140239760A1

公开(公告)日：2014-08-28

申请号：US14193282

申请日：2014-02-28

Applicant: MINEBEA CO., LTD.

Inventor： Yusuke ASAI ,  Motoharu AKIYAMA ,  Haruka MIYAJI

IPC: H02K7/116

CPC classification number: H02K7/116 ,  F16C33/6633 ,  F16C2361/61 ,  F16H57/0464 ,  F16H57/0495 ,  H02K37/00

Abstract: An actuator includes a stepping motor; a multi-stage gear device including a first stage gear attached to a rotation shaft of the motor, wherein a gear of each stage engages with a gear of a next stage; and a base member on which the multi-stage gear device and the stepping motor are mounted, wherein in the multi-stage gear device, a grease composition for resin is applied to a bearing part of the gear, and to an engaging part between the gears, and the grease composition for resin includes: (a) a base oil including a poly-alpha-olefin oil with a kinematic viscosity at 100° C. of 4 to 6 mm2/s; (b) a thickening agent which is lithium soap; (c) a viscosity increasing agent; (d) a solid lubricant; and (e) an anti-wear agent, and wherein the NLGI consistency number of the composition is 00, 0, 1, or 2.

Abstract translation: 致动器包括步进马达; 多级齿轮装置，包括附接到电动机的旋转轴的第一级齿轮，其中每级的齿轮与下一级的齿轮接合; 以及安装有多级齿轮装置和步进电动机的基座部件，其中，在多级齿轮装置中，将用于树脂的润滑脂组合物施加到齿轮的轴承部分上， 齿轮和用于树脂的润滑脂组合物包括：（a）包含在100℃下的运动粘度为4至6mm 2 / s的聚α-烯烃油的基础油; （b）作为锂皂的增稠剂; （c）增粘剂; （d）固体润滑剂; 和（e）抗磨剂，其中所述组合物的NLGI稠度数为00,0,1或2。

公开(公告)号：US20130193814A1

公开(公告)日：2013-08-01

申请号：US13718530

申请日：2012-12-18

Applicant: MINEBEA CO., LTD.

Inventor： Haruka MIYAJI ,  Takayuki MATSUI ,  Tomoyuki SUZUKI

IPC: H02K13/00

CPC classification number: H02K13/00 ,  H02K3/525 ,  H02K5/225 ,  H02K2211/03

Abstract: A motor includes a rotor, a stator, an excitation coil, and a holder disposed on an outer side of the stator to hold a flexible printed circuit board supplying drive power, wherein the holder includes a main body mounting the flexible printed circuit board thereon, a bridging portion disposed along one of long sides on a first face a of the main body to form a first opening allowing the flexible printed circuit board to be inserted therethrough, and an engaging portion disposed along each of short sides on a second face of the main body to removably fit with a part of a terminal block of the excitation coil.

Abstract translation: 电动机包括转子，定子，励磁线圈和设置在定子的外侧上的保持器，用于保持提供驱动力的柔性印刷电路板，其中保持器包括在其上安装柔性印刷电路板的主体， 桥接部分，沿着主体的第一面a上的一个长边设置，以形成允许柔性印刷电路板插入其中的第一开口;以及沿着每个短边设置在第二面上的接合部分， 主体可拆卸地与励磁线圈的端子块的一部分配合。