公开(公告)号：US11309824B2

公开(公告)日：2022-04-19

申请号：US16981371

申请日：2019-01-30

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yoshiaki Yokoi ,  Haruki Teramukai

IPC: H02P29/024

Abstract: A gear motor (motor device) comprising a three-phase motor and a terminal box housing a power supply connection terminal for connecting the three phase motor to an alternating current power supply, comprises: a power detection circuit that detects power to be supplied to the three-phase motor; a control unit that executes predetermined control if a load abnormality related to the three-phase motor or a driven device is detected based on power detected by the power detection circuit. The power detection circuit and the control unit are housed in the terminal box.

公开(公告)号：US20230318512A1

公开(公告)日：2023-10-05

申请号：US18020842

申请日：2021-08-02

Applicant: Tsubakimoto Chain Co.

Inventor： Yoshiaki Yokoi ,  Haruki Teramukai

IPC: H02P29/024 ,  H02P29/028 ,  H02P29/60

CPC classification number: H02P29/026 ,  H02P29/028 ,  H02P29/60

Abstract: Provided are a motor device, a gear motor, a detection method, and a computer readable medium capable of detecting a load fluctuation and performing highly accurate preventive maintenance. The motor device comprises: a motor; a power detection circuit that detects power supplied to the motor; a temperature sensor that measures a temperature of the motor; a storage unit that stores a regression equation expressing a relationship between power detected by the power detection circuit and a temperature measured by the temperature sensor, and a physical quantity used to derive an output shaft torque of the motor; and a processing unit that derives the output shaft torque of the motor from the power detected by the power detection circuit and the temperature measured by the temperature sensor by using the physical quantity obtained by the regression equation.

公开(公告)号：US20210075360A1

公开(公告)日：2021-03-11

申请号：US16981371

申请日：2019-01-30

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Yoshiaki Yokoi ,  Haruki Teramukai

IPC: H02P29/024

Abstract: A gear motor (motor device) comprising a three-phase motor and a terminal box housing a power supply connection terminal for connecting the three phase motor to an alternating current power supply, comprises: a power detection circuit that detects power to be supplied to the three-phase motor; a control unit that executes predetermined control if a load abnormality related to the three-phase motor or a driven device is detected based on power detected by the power detection circuit. The power detection circuit and the control unit are housed in the terminal box.