| 摘要 |
A hydraulic control device includes a first predetermined portion (2) receiving the oil discharged from a pump (1), a first channel (11A, 12A, 12B) establishing a communication between the pump (1) and the first predetermined portion (2), a second channel (13) branched from the first channel (11A, 12A, 12B) for supplying oil to a second predetermined portion (8), a flow passage area regulation unit (3) arranged on the second channel (13) and equipped with a spool (31) that moves in a flow passage area increasing direction when an oil pressure in the second channel (13) increases and in a decreasing direction when the oil pressure decreases, and a bypass channel (15), which is provided separately from a portion of the second channel (13) where the spool (31) disconnects the second channel (13), establishes a communication between an upstream side and a downstream side of the second channel (13) relative to the flow passage area regulation unit (3) and supplies oil to the second predetermined portion (8) even when the spool (31) disconnects the second channel (13). |
