公开(公告)号：US20200313578A1

公开(公告)日：2020-10-01

申请号：US16771675

申请日：2018-12-04

Applicant: NIDEC CORPORATION

Inventor： Hideyuki ODAGIRI

IPC: H02P3/08 ,  H02M7/06 ,  G01R31/34

Abstract: The brake driving control circuit, which controls an electromagnetic brake that releases the brake by applying a current, is provided with: a first rectifying element provided between a first power supply of a first circuit voltage and one terminal of the electromagnetic brake; a cut-off switch inserted into a line through which the first power supply supplies power; a first switching element provided between the other terminal of the electromagnetic brake and a ground point; and a second switching element and a second rectifying element provided in series between a second power supply of a second circuit voltage, which is different from the first circuit voltage, and the one terminal of the electromagnetic brake.

公开(公告)号：US20200298422A1

公开(公告)日：2020-09-24

申请号：US16089372

申请日：2017-03-09

Applicant: NIDEC CORPORATION

Inventor： Yuu AYUZAWA ,  Haruhiro TSUNETA ,  Hideyuki ODAGIRI ,  Hirokazu WATANABE

IPC: B25J17/00 ,  B25J9/10 ,  B25J9/00 ,  B25J9/12 ,  B25J9/04

Abstract: Provided is a robot equipped with two joint parts attached to an end of an arm in a coupled state. For example, in a joint part of a robot, a motor and a reduction gear are housed in a case, and an output-side member having a flange is fixed to the output shaft of the reduction gear. An opening that opens in the direction orthogonal to the axial direction of the output shaft of the reduction gear is formed in the case. A planar attachment face orthogonal to the opening direction of the opening is formed in the opening. The robot is provided with a plurality of biaxial joint units comprising two joint parts. In the robot, the attachment face of the case of one joint part constituting a biaxial joint unit is fixed to the flange of the other joint part either directly or via a coupling member.

公开(公告)号：US20190109549A1

公开(公告)日：2019-04-11

申请号：US16089390

申请日：2017-03-09

Applicant: NIDEC CORPORATION

Inventor： Hideyuki ODAGIRI ,  Haruhiro TSUNETA ,  Yuu AYUZAWA ,  Shunya YAZAWA

IPC: H02P6/16 ,  G01D5/249 ,  H02K7/102 ,  H02K11/215 ,  H02K11/22 ,  H02K24/00

Abstract: A motor system includes a motor, and a multi-turn absolute encoder that detects a rotation number and an absolute angular position of a rotation shaft of the motor. The multi-turn absolute encoder includes: an absolute angular position detection device that detects the absolute angular position within one rotation period of the rotation shaft; and a storage element that stores the rotation number of the motor. Even if the driving of the multi-turn absolute encoder is stopped while the motor is stopped, the multi-turn absolute encoder detects the multi-turn position of the rotation shaft after startup. Further, the motor has a brake mechanism including: a gear-type brake wheel that rotates integrally with the rotation shaft; an engagement member capable of engaging with the teeth of the gear-type brake wheel; and an actuator which causes the teeth and the engagement member to engage with each other during braking.