Patent ID: 6718840
Filing Date: 2004-04-13
Classification: F16H,Y10T

Abstract:
A sun and planet gear mechanism comprising:a fixed shaft; a sun gear rotatably fitted on said fixed shaft; at least one planet gear meshed with said sun gear, a rotation of said sun gear being transmitted to said at least one planet gears; and a planet lever for rotatably supporting said planet gears, swingably attached to said sun gear, a frictional force between said planet lever and said sun gear causing said planet lever to swing with rotation of said sun gear such that said at least one planet gear may revolute about said sun gear; wherein said sun gear has a first cylindrical portion in which said fixed shaft is fitted and a circular groove formed around said first cylindrical portion; and said planet lever has a second cylindrical portion which rotatably fits on a periphery of said first cylindrical portion in said circular groove.