VEHICULAR TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce the pressure loss of supply pressure by preventing eccentric wear of a check valve laid between two lines of hydraulic pressure supply passages for a mechanical pump to be driven by a travelling system driving source and an electric pump.

SOLUTION: The check valve 70 laid in a supply oil path from the mechanical pump has a valve case 72 fixed to a transmission case 41 in the axial direction as a gravity direction. It is arranged between the transmission case 41 and a valve body 40. Oil from the hydraulic pressure supply passage of the transmission case flows from a valve seat 72a of the valve case 72 along a recessed groove 72b to the axial direction and flows out of flow-out ports 76a, 76c at the lower end to the hydraulic pressure supply passage of the valve body 40. A ball 73 is movable along the axial line between the valve seat 72a and a stopper portion 75a.

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