A REDUCTION GEAR OF CYCLOID

摘要

PURPOSE: A hollow cycloid reducer is provided to arrange a power line and a control line by forming a space part on an input gear part and to effectively control speed reducing rate through first acceleration using the input gear part and a spur gear and second deceleration using a cycloid gear. CONSTITUTION: An input gear part(10) for transmission is composed so that a gear is formed in the outer circumference. A spur gear part(20) unites with the gear of the input gear part for power transmission. A crank shaft is axis-connected at the center of the spur gear part and a multi-stage eccentricity cam is formed in the body of the crank shaft. A combining hole is formed in the inner side of a cycloid disc(40) and a gear is formed in the outer side of the cycloid disc. A ring gear part(50) establishes a ring gear in which an outside gear of the cycloid disc is combined.