ELECTRIC ACTUATOR

WIPO Patent Application WO/2021/182357

A1

This electric actuator (1) includes: an electric motor (4) which can supply a driving force; an input rotating body (2) which can rotate about a rotational axis X; a planetary rotating body (22) which is capable of self-rotation and can revolve around a rotational axis; an output rotating body (3) which can rotate about the rotational axis X; and a speed reducer (5) which changes the rotation phase difference of the output rotating body (3) with respect to the input rotating body (2). In the speed reducer (5), the planetary rotating body (22) meshes with each of the input rotating body (2) and the output rotating body (3). The speed reducer (5) has external teeth (19, 20) provided to the outer periphery of the input rotating body (2) and the output rotating body (3); and internal teeth (30, 31) provided to the inner periphery of the planetary rotating body (22). Circumferential-direction grooves (35, 36) are provided as a lubricant reservoir to meshing portions (33, 34) between the external teeth (19, 20) and the internal teeth (30, 31).

SAITO TAKAHIDE (JP)
ISHIKAWA SHINTAROU (JP)
TAKAGI HISASHI (JP)

PCT/JP2021/008831

September 16, 2021

March 05, 2021

Click for automatic bibliography generation  

NTN TOYO BEARING CO LTD (JP)

F16C19/06; F16C19/54; F16C33/76; F16C33/78; F16H1/32; F16H57/04; F16J15/10; F16J15/3232; F16J15/447; H02K7/116

WO2019077886A1

2019-04-25

JP2012184818A	2012-09-27
JP2014185744A	2014-10-02
JPH04312213A	1992-11-04
JPS57134410U	1982-08-21
JP2013210025A	2013-10-10

SHIROMURA Kunihiko et al. (JP)

View/Download PDF      PDF Help

Previous Patent: ROBOT CONTROL DEVICE, ROBOT SYSTEM, AND ROBOT CONTROL METHOD

Next Patent: MOLDING SYSTEM AND MOLDING METHOD