| 摘要 |
PURPOSE:To prevent oil dragging of a plate-shaped rotary body and improve transmission efficiency by forming a space spreading from the inner peripheral side to the outer peripheral side onto a supporting wall for rotatably supporting the inner periphery of the plate-shaped rotary body which revolves by receiving the transmission of a power in an automatic transmission. CONSTITUTION:A transmission has an outer peripheral wall 20A, inner peripheral wall 20B, and a disc-shaped rotary body 1 for the communication between the both side walls 20A and 20B, and a hydraulic servodrum 20 opened rearwardly is rotatably fitted onto the outer periphery of the supporting part 2A of a supporting wall 2. In this case, the supporting wall 2 is formed to the shape for the formation of the space A spreading from the inner peripheral side to the outer peripheral side so that the oil in a connection drum 30 can be sufficiently discharged even if the oil flows into between the plate-shaped rotary body 1, for example from the engagement part 30A of the connecting drum 30. Therefore, the above-described oil is smoothly discharged through the space A, and the oil dragging of the plate-shaped rotary body 1 is prevented. |
