ROTARY ACTUATOR

WIPO Patent Application WO/2021/095653

A1

A speed reducer (40) is provided with: a ring gear (42); an eccentric gear (43) which is provided eccentrically with respect to an axis of rotation (AX1), and which has external tooth portions (47) that mesh with the ring gear (42); an output member (44) provided coaxially with the axis of rotation (AX1); and an Oldham mechanism (45) which transfers the rotation of the eccentric gear (43) to the output member (44). The Oldham mechanism (45) includes: an input side sliding surface (61) formed on the eccentric gear (43); an output side sliding surface (62) formed on the output member (44); and an intermediate joint (56) having a first intermediate sliding surface (63) which is capable of sliding against the input side sliding surface (61) in the radial direction, and a second intermediate sliding surface (64) which is capable of sliding against the output side sliding surface (62) in the radial direction. The eccentric gear (43) includes the input side sliding surface (61) and an accommodating space (65) which accommodates at least a portion of the intermediate joint (56), in a position that is radially inward of the external tooth portions (47) and that overlaps the position of the external tooth portions (47) in the axial direction.

KANNOU FUMIYA (JP)
KADO HIROYUKI (JP)
OOISHI KENICHI (JP)
NAITO SHINJI (JP)

PCT/JP2020/041529

May 20, 2021

November 06, 2020

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DENSO CORP (JP)

F16H1/32; F16D3/04; H02K7/116

JP2005282601A	2005-10-13
JP2019044801A	2019-03-22
JPH02161189A	1990-06-21
JP2016075369A	2016-05-12
JP2008185205A	2008-08-14
JPH0526304A	1993-02-02
JPH0243486U	1990-03-26

HATTORI & PARTNERS (JP)

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