| 摘要 |
PROBLEM TO BE SOLVED: To discharge a lubrication oil efficiently without causing increase in agitation resistance and the like in a bearing, in a CVT which use the lubrication oil leaked from an oil passage to a secondary pulley for lubrication of the bearing on the secondary pulley side and which discharges it from an oil hole to a primary pulley side.SOLUTION: On a bottom wall 11a of a bearing accommodation recess part 11 for accommodating an outer race of a bearing in a side cover of a transmission case, a first groove 15 which receives a shaft part end of a secondary pulley and a second groove 16 which continues to the outside of it and which the bearing faces are provided, and an oil hole 20 is set at a downstream side terminal end of the second groove 16 along the rotation direction of a shaft part. The width of the second groove 16 becomes wider toward the downstream side. A lubrication oil toward the outside by a centrifugal force is guided directly to the oil hole 20 along the second groove 16, and discharged. As a lower edge of the oil hole 20 is set at the same height as the lowermost position P of an end surface inner diameter edge of the outer race of the bearing, lubrication oil supply into the bearing is secured without excess or deficiency.SELECTED DRAWING: Figure 2 |
