LINEAR MOTION-ROTARY MOTION CONVERTER

摘要

PROBLEM TO BE SOLVED: To provide a linear motion-rotary motion converter capable of composing easily and inexpensively assembly works, reducing noise and partial wear, and obtaining steady operation. SOLUTION: A planetary mechanism 30 composing a hypocycloid mechanism is connected with one of connecting part 28a of a connecting pin 28 arranged on a connecting rod 26. Conversion between linear motion and rotary motion are performed between a crankshaft 32 and the connecting rod 26. A driven crank mechanism 50 having a rotator 54 capable of rotating around a concentric axis with an axial center S1 of the crankshaft 32 and a driven crank 58 arranged on the rotator 54 and capable of relatively rotating coaxially with an axial center S2 of the planetary gear 38 is arranged on a side placed opposite to the planetary mechanism 30 holding the connecting rod 26. The driven crank 58 is connected with the other connecting part 28b of the connecting pin 28 to perform planetary rotation (revolution and rotation) by synchronizing with the planetary gear 38.