CYCLOIDAL SPEED REDUCER

WIPO Patent Application WO/2019/225818

A1

Proposed is a cycloidal speed reducer having a smooth lubricant flow. The speed reducer, according to the present invention, comprises: an input shaft which rotates by an external power source and has a first crank part and a second crank part which are each symmetrically eccentric; a ring gear having a streamlined tooth profile part molded therein; a first disc and a second disc which rotate by means of the first crank part and the second crank part arranged in the inner sides thereof, have molded on the respective outer side surfaces thereof a streamlined tooth profile part coupling to the streamlined tooth profile part of the ring gear through a pin, are supported in the axial direction in a state of making contact with each other at the inner side of the ring gear, and are circularly arranged so that a plurality of carrier pins are coupled therein so as to have gaps therebetween; and a carrier which has a speed-reduced output by being connected to the carrier pins. In addition, lubrication grooves (22g, 24g) capable of connecting the inside and outside are molded on the respective opposing surfaces of the first disc (22) and the second disc (24). Here, the lubrication grooves of the first disc and the lubrication grooves of the second disc are molded so as to be inclined in the opposite direction from each other.

JUNG JONG-RYUL (KR)
KIM KWANG-MIN (KR)
SHIN DONG-HYEOK (KR)
KIM MIN-KUK (KR)

PCT/KR2018/013949

November 28, 2019

November 15, 2018

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WOORIM MACHINERY CO LTD (KR)

F16H1/34; F16H57/04

KR20120099748A	2012-09-11
KR20080026844A	2008-03-26
KR20140062131A	2014-05-22
JP2010156407A	2010-07-15
JP2011033113A	2011-02-17

KIM, Hahn-Ul (KR)

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