| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear structure for optionally changing a shaft angle, making an engagement and transmission efficiency of a force excellent, and transmitting high torque force. SOLUTION: The gear structure 1 where a projection gear 10 and a recess gear 20 are engaged employs the constitution where the pitch circle diameter of the projection gear 10 is formed so as to project to the outer peripheral side with a predetermined curvature and change in the thickness direction of the projection gear 10, and the pitch circle diameter of the recess gear 20 is formed so as to recess to the inner peripheral side with the same curvature as the predetermined curvature and change in the thickness direction of the recess gear 20. COPYRIGHT: (C)2009,JPO&INPIT
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