| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubrication structure of a transmission capable of supplying a lubricant to a spline fitting portion with a transmission gear without deteriorating the strength of a transmission shaft, and downsizing the transmission gear.SOLUTION: A transmission gear 10 has a large-diameter portion 21 formed at an axial direction generally center portion which generates maximum deflection, and a small-diameter portion 22 formed adjacent to the large-diameter portion 21. On an outer periphery of the large-diameter portion 21, a first transmission gear 32 is disposed, and on an outer periphery of the small-diameter portion 22, a second transmission gear 34 is disposed. A distribution hole 26a formed in a diametrical direction to supply a lubricant, is provided only at the small-diameter portion 22, and on a shifting part from the small-diameter portion 22 toward the large-diameter portion 21, an oil collection space S is formed.SELECTED DRAWING: Figure 1 |
