Title:
電動機付き減速機
Document Type and Number:
Japanese Patent JP6817841
Kind Code:
B2
Abstract:
This speed reducer with an electric motor has: a hollow shaft that extends in an axial direction around a first center axis; a tubular casing fixed to the hollow shaft; a fixed part that is relatively stationary with respect to the casing; an electric motor that generates a rotation motion with respect to a second center axis parallel to the first center axis on the radial outside of the hollow shaft; a speed reduction mechanism that decelerates and transmits the rotation motion by the electric motor; an output part that rotates with respect to the first center axis at a rotation speed after the deceleration; and a torque sensor that is connected to the casing and the fixed part. The torque sensor has an elastically deformable strain body that has an annular outer ring and an annular inner ring and a plurality of strain sensors. The outer ring is located at an end portion on the radial outside of the torque sensor and is connected to one of the casing and the fixed part. The inner ring is located at an end portion on the radial inside of the torque sensor and is connected to the other of the casing and the fixed part. Each of the plurality of strain sensors is at least partially located in a radial direction between the outer ring and the inner ring.
Inventors:
Koroyasu Takashi
Tomoyuki Otsuka
Takuro Yonemura
Takao Ikeda
Tomoyuki Otsuka
Takuro Yonemura
Takao Ikeda
Application Number:
JP2017027438A
Publication Date:
January 20, 2021
Filing Date:
February 17, 2017
Export Citation:
Assignee:
Nidec-Shimpo Co., Ltd.
Nidec Copal Electronics Co., Ltd.
Nidec Copal Electronics Co., Ltd.
International Classes:
F16H1/32; F16C19/36; F16C19/52; G01L3/14; H02K7/116
Domestic Patent References:
| JP2012228754A | ||||
| JP2006200984A | ||||
| JP2013215081A | ||||
| JP5947494B2 |
Foreign References:
| WO2015020089A1 |
Attorney, Agent or Firm:
Kozo Aoyama
Takami Nishida
Takami Nishida