POWER TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To adequately lubricate a bearing supporting a pump impeller without increasing a load of an oil pump.SOLUTION: A power transmission device includes: a cover member 112 having an annular wall part 112a fixed to a transmission case and a support part 112b extending from an inner periphery of the annular wall part 112a in an axial direction; and a radial bearing disposed between the support part 112b and a sleeve of a pump impeller. The cover member 112 has: an oil hole 112c which penetrates through an upper part of the support part 112b so as to guide a lubrication oil to the radial bearing 147; a recessed part 112f which is formed in the annular wall part 112a so as to be recessed from an automatic transmission side to a start device side in an area above the oil hole 112c; and a first protruding part which extends along a front side edge of the recessed part 112f when viewed in a rotation direction of the pump impeller 140 and protrudes from the start device side to the automatic transmission side.SELECTED DRAWING: Figure 4