Title:
ELECTRIC ACTUATOR
Document Type and Number:
Japanese Patent JP2018174656
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electric actuator capable of achieving the miniaturization by reducing an axial dimension.SOLUTION: An electric actuator comprises: a motor part 7; a reduction gear 8 that transmits a rotation of the motor part 7 by reducing the speed. In the electric actuator, a rotational axis of the motor part 7 and an output rotational body 43 of the reduction gear 8 are arranged on the same axis. The reduction gear 8 includes: an input rotational body 40 that is integrally rotated with the motor part 7; and an orbital ring 41 that is arranged in an outer periphery of the input rotational body 40; a plurality of planetary rotation bodies 42 rotatably arranged between the input rotational body 40 and the orbital ring 41; and an output rotational body 43 that holds the planetary rotation bodies 42. The orbital ring 41 of the reduction gear 8, a whole of the plurality of planetary rotation bodies 42, a whole or a part of the input rotational body 40 of the reduction gear 8, and a part of the output rotational body 43 are arranged in an inner periphery of the motor part 7.SELECTED DRAWING: Figure 2
Inventors:
KITAYAMA NAOTSUGU
MATTO TAKUSHI
MATTO TAKUSHI
Application Number:
JP2017071462A
Publication Date:
November 08, 2018
Filing Date:
March 31, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
H02K7/116; F16H1/28; F16H13/08; G01B7/30; G01D5/12; H02K11/215
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Hideaki Nomura
Tsuyoshi Kumano
Hideaki Nomura