SPEED REDUCER WITH ELECTRIC MOTOR

Japanese Patent JP2018132154

A

PROBLEM TO BE SOLVED: To provide structure for a speed reducer with an electric motor, the structure allowing for detection of load including torque around a center axis applied to an output part.SOLUTION: The speed reducer with an electric motor has: a hollow shaft which extends axially around a first center axis; a cylindrical casing which is fixed to the hollow shaft; a fixed part which is stationary relatively to the casing; the electric motor which cause a second center axis parallel with the first center axis to generate rotational motion in radially outside the hollow shaft; a speed reducing mechanism which reduces the rotational motion generated by the electric motor and transmits the reduced rotational motion; an output part which rotates around the first center axis at the reduced number of revolutions; and a torque sensor which is connected to the casing and fixed part. The torque sensor has an elastically deformable strain inducer which has an outer and an inner annular ring, and a plurality of strain sensors. The outer ring is located at a radially outer end part of the torque sensor, and connected to one of the casing and fixed part, and the inner ring is located at a radially inner end part of the torque sensor.SELECTED DRAWING: Figure 1

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KOROYASU TAKASHI
OTSUKA TOMOYUKI
YONEMURA TAKURO
IKEDA TAKAO

JP2017027438A

August 23, 2018

February 17, 2017

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NIDEC SHIMPO CORP
NIDEC COPAL ELECTRONICS CORP

F16H1/32; F16C19/36; F16C19/52; G01L3/14; H02K7/116

JP2012228754A	2012-11-22
JP2006200984A	2006-08-03
JP2013215081A	2013-10-17
JP5947494B2	2016-07-06

WO2015020089A1

2015-02-12

Takami Nishida

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