| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle gear transmission device which is suitable for warm-up without depending on an external heat source.SOLUTION: A vehicle gear transmission device includes a ring gear 7 and a drive pinion 3 engaged with the ring gear 7, which are supported by bearings, respectively, in a housing 2. Lubricant is stored in the housing 2. The bearing support parts are lubricated while circulating the lubricant by scraping operation which is caused by engagement rotation of the ring gear 7 and the drive pinion 3. The vehicle gear transmission device includes an engagement position change means 30 for moving an axial position of the drive pinion 3 from an optimal engagement position in the axial direction, at a low temperature. |
