| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite valve having structure easily reducing a size thereof, in a composite valve made by integrating an unload valve and a relief valve mainly used for a construction machine.SOLUTION: In a communication path component 11, upstream of downstream first communication paths 39, 40 relating to an unload valve and downstream second communication path 42 relating to a relief valve is shared as an upstream communication path 38, and a connecting path to a downstream oil path is a common annular communication path 53. In a solenoid component 12, hollows are formed to a shaft 56 and a movable magnetic pole 60 relating to operation of a first valve element 20 to dispose a spring 55 and a shaft 58 relating to operation of a second valve element 30 in the hollows and thereby to prevent interference between them. Since the upstream communication path 38 connected to the upstream oil path matches a sliding direction of a sliding member, a composite valve 10 is easily formed in a shape of an especially small-diameter and elongated tube. |
