| 摘要 |
PURPOSE:To prevent foreign matter from entering into the case chamber of a speed change gear by providing a passage communicating the chamber inside a housing with the chamber inside the speed change gear case. CONSTITUTION:The inside chamber 1a of a speed change gear case and the inside chamber 5c of a housing 5 are communicated with each other through a pipe 8, a empty chamber 6a, and upper part penetration holes 61b, 61c, presenting a passage. Oil scattered during the rotation of clutch 21 is, even if it enters into the empty chamber 6a from the penetration holes 61b, 61c, returned from a lower part penetration hole to the lower part of the inside chamber 1a of a case 1 without directly sticking to the pipe 8. Hereby, a concave part 61a formed in a cover member 61, the upper part penetration holes 61b, 61c, and the lower part penetration hole, etc., offer a shielding means. Thus, air vent within the chamber 1a of the speed change gear case 1 is performed without any trouble. |
