| 摘要 |
PROBLEM TO BE SOLVED: To realize a gear transmission in which a crank shaft is supported by a simple structure.SOLUTION: A crank shaft 12 of a gear transmission 100 is supported by a supporting member 2. The supporting member 2 has a first supporting part 2a and a second supporting part 2c. The crank shaft 12 has a first shaft part 16 extending from an eccentric body 18 and a second shaft part 38 extending from an eccentric body 36. The first shaft 16 is supported at a first supporting part 2a through a first cylindrical roller bearing 22. The second shaft part 38 is supported at the second supporting part 2c through a second cylindrical roller bearing 32. The second shaft part 38 passes through the second supporting part 2c. At the gear transmission 100, a pair of restricting members 42, 44 for restricting motion of the crank shaft 12 toward a rotating shaft 40 are fixed to the second shaft part 38. The second supporting part 2c is arranged between the pair of restricting members 42, 44. |
