公开(公告)号：US20230311300A1

公开(公告)日：2023-10-05

申请号：US18022711

申请日：2021-09-21

Applicant: Futaba Corporation

Inventor： Shotaro KUDO ,  Toru KONO ,  Ryosei KURAMOTO ,  Hidetoshi MURAMATSU ,  Tomohiro KOMIYAMA ,  Yuri MIYAMA ,  Hideki OKU

IPC: B25J9/12 ,  H02K11/33

CPC classification number: B25J9/126 ,  H02K11/33 ,  H02K2211/03

Abstract: A servo motor includes: a driving section including a rotor and stator; an input shaft configured such that a driving force of the driving section is transferred to the input shaft, wherein the input shaft is configured to be integral and rotated with the rotor; a reduction gear configured to output the driving force from the input shaft by reducing a rotational speed of the input shaft; an output shaft configured such that the driving force which has been transferred to the input shaft is transferred to the output shaft via the reduction gear; an input encoder disc attached to the input shaft; an output encoder disc attached to the output shaft; a circuit board including a predetermined circuit pattern; an input sensor mounted on the circuit board, wherein the input sensor is oriented toward the input encoder disc; and an output sensor mounted on the circuit board, wherein the output sensor is oriented toward the output encoder disc; wherein at least one of the input sensor or the output sensor is mounted on the circuit board via a spacer board, the spacer board being connected to the circuit board, and wherein an electronic component is mounted on the circuit board, the electronic component being different from the input sensor and output sensor.