| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear device capable of suppressing generation of a gear noise.SOLUTION: A gear has a tooth surface shape in which a meshing length rate of three or more teeth falls outside a predetermined range centering on an all-gear average value of the meshing length rate, with respect to the average value, when a value obtained by dividing a contact length L2 of a tooth bearing surface 12 by a diagonal length L1 of a plane 10 of action is set to be the meshing length rate (L2/L1). |
