Title:
電動アクチュエータ
Document Type and Number:
Japanese Patent JP7463140
Kind Code:
B2
Abstract:
To suppress the outflow of a lubricant from an engaging portion of an eccentric speed reducer, and to prevent the depletion of the lubricant.SOLUTION: An electric actuator includes a speed reducer 5 which has an electric motor 4 capable of supplying driving force, an input rotator 2 capable of rotating about a rotation axis X, a planetary rotator 22 capable of rotating and revolving about the rotation axis, and an output rotator 3 capable of rotating about the rotation axis X, and in which the planetary rotator 22 engages with the input rotator 2 and the output rotator 3 to change the rotation phase difference of the output rotator 3 with respect to the input rotator 2. The speed reducer 5 is composed of outer tooth portions 19 and 20 provided on outer peripheries of the input rotator 2 and the output rotator 3, and inner tooth portions 30 and 31 provided on an inner periphery of the planetary rotator 22. At engaging portions 33 and 34 between the outer tooth portions 19 and 20 and the inner tooth portions 30 and 31, circumferential grooves 35 and 36 as lubricant reservoirs are provided.SELECTED DRAWING: Figure 1
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Inventors:
Takahide Saito
Shintaro Ishikawa
Shintaro Ishikawa
Application Number:
JP2020042979A
Publication Date:
April 08, 2024
Filing Date:
March 12, 2020
Export Citation:
Assignee:
ntn corporation
International Classes:
F16H1/32; F16H57/04; H02K7/116
Domestic Patent References:
| JP4312213A | ||||
| JP57134410U | ||||
| JP2013210025A |
Foreign References:
| WO2019077886A1 |
Attorney, Agent or Firm:
Kunihiko Shiromura
Takeshi Kumano
Takeshi Kumano