PROBLEM TO BE SOLVED: To provide an electromagnetic valve which suppresses self-excited vibrations of a compression coil spring generated due to the flow of an oil liquid and allows a valve body to stably seat.SOLUTION: A compression coil spring stand 61 partitions a first oil chamber 51e into a first compartment chamber R1a with a compression coil spring 60 disposed and a second compartment chamber R1b with no compression coil spring 60 disposed, the compression coil spring 60 includes a contactable receiving face 61a1, and a valve body guide hole 61a2 through which a valve body 53 is inserted to guide the valve body 53, and is movable between a sheet 54 and the compression coil spring 60 along a central axial direction, the receiving face 61a1 is provided so as to be located at the other end side of a shaft 52 with respect to a second flow channel 51c1, and a notch 61b1 (a third flow channel) where the oil liquid flows in and out is formed at a position closer to one end side of the valve body 53 than the receiving face 61a1 on the compression coil spring stand 61.SELECTED DRAWING: Figure 2
【課題】油液の流れに伴って発生する圧縮コイルバネの自励振動を抑制するとともに、弁体が安定して着座する電磁弁を提供する。【解決手段】圧縮コイルバネスタンド61は、第一油室51eを、圧縮コイルバネ60が配設される第一区画室R1aと、圧縮コイルバネ60が配設されない第二区画室R1bとに区画し、圧縮コイルバネ60が接触可能である受け面61a1と、弁体53が挿通し、かつ弁体53をガイドする弁体ガイド孔61a2と、を有し、シート54と圧縮コイルバネ60との間を中心軸方向に沿って移動可能であり、受け面61a1は、第二流路51c1に対してシャフト52の他端側に位置するように設けられ、圧縮コイルバネスタンド61に、油液が流入出する切欠部61b1(第三流路)が、受け面61a1より弁体53の一端側の位置に形成されている。【選択図】図2
ELECTROMAGNETIC VALVE AND FLUID PRESSURE CONTROL DEVICE
電磁弁および液圧制御装置
2017-11-30
Patent
Electronic Resource
Japanese
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