| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device of a transmission case of an engine capable of suppressing the abrasion of lips on an inner peripheral side of an oil seal, and a collar.SOLUTION: In a sealing device of a transmission case of an engine, an inside transmission wheel 4 is fitted to an outer periphery of a rotary transmission shaft 2 in the transmission case 1, a transmission shaft inserting hole 5 is formed in a case wall 3 of the transmission case 1, an outside transmission wheel 7 is fitted to an outer periphery of a projecting part 6 of the rotary transmission shaft 2 outside the transmission case 1, a lip abutment face 2a is formed at an outer peripheral side of the rotary transmission shaft 2 in the transmission shaft inserting hole 5, an oil seal 9 is fitted to an inner periphery of the transmission shaft inserting hole 5, and lips 9a, 9b on an inner peripheral side of the oil seal 9 abut on the lip abutment face 2a on the outer peripheral side of the rotary transmission shaft 2. The oil seal 9 is covered with the outside transmission wheel 7 from a front side, a front lip 9c is formed at the oil seal 9, and the front lip 9c is made to abut on a rear face 7a of the outside transmission wheel 7. |
