Aisin Aw Co., Ltd.

Tatsuaki Ito

Tomoyuki Ishikawa

Yoshinori Shibayama

Ko Tsunematsu

A power transmission device having a shift device in a case; and a pump sucking and discharges oil, including: a gear receiving power from the shift device; a gear shaft with a breather chamber having at least one end side in an axial direction being opened, and attached to the gear; a bearing supporting the gear shaft rotatably relative to the case on the breather chamber one end side; a vent pipe communicating with the breather chamber opening and outside of the case; a passage in the case with an outlet port opening to the case inside, and allowing pump leakage oil to flow from the outlet port; a member receiving flowing from the outlet port of the passage; a passage guiding the leakage oil from the receiving member to the bearing; and a portion suppressing entry of oil thrown up with rotation of the gear into the receiving member.

Power transmission device

A vehicle power transmission device including an accumulation portion which accumulates lubricating oil, a pressure pump driven to pump the lubricating oil accumulated in the accumulation portion to the transmission as hydraulic oil, a scooping gear which scoops up the lubricating oil accumulated in the accumulation portion while rotating, a reception and guide portion receiving the lubricating oil scooped up by the scooping gear and guiding it to a predetermined lubrication target, and a leaked hydraulic oil guide portion guiding leaked hydraulic oil, leaked when the hydraulic oil is pumped from the pressure pump, to the reception and guide portion.

Growing community of inventors

Anjo, Japan

Tatsuaki Ito