SPEED REDUCING MECHANISM, AND LUBRICATION METHOD

摘要

PROBLEM TO BE SOLVED: To keep a good lubrication state by returning lubricant dropped from a tooth flank to the tooth flank with a simple structure.

SOLUTION: In a speed reducing mechanism 2 having a sector-shaped worm wheel 17 having a less rotation range than one rotation, grease dropped from the tooth flank is collected in a round hole 21. A cam 17a formed on the worm wheel 17 moves a piston 20 forward to push out the grease collected in the round hole 21 is extruded to a circulating passage 23, thereby returning the grease to the tooth flank of the worm shaft 12.

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