PROBLEM TO BE SOLVED: To provide a check valve of a simple structure and a hydraulic control device equipped with the same.SOLUTION: A check valve 1, 8 comprises a valve chamber 13, 83 partitioned by a valve body 11, 81 and a valve seat 12, 82, a large-diameter valve 14, 84 which is disposed in the valve chamber 13, 83 and is pressed against the valve seat 12, 82 in a contactable and separable manner by a first elastic member 9, 91 to divide the valve chamber 13, 83 into a one side valve chamber 13b, 83b and the other side valve chamber 13a, 83a, a small-diameter valve 15, 85 disposed in the other side valve chamber 13a, 83a, and a small passage 17, 87 which provides communication between the one side valve chamber 13b, 83b and the other side valve chamber 13a, 83a in a state that the small-diameter valve 15, 85 is separated from the valve seat 12, 82. The small-diameter valve 15 is configured to be movable in the other side valve chamber 13a, 83a, is regulated in movement from the other side valve chamber 13a, 83a to the one side valve chamber 13b, 83b, and is abutted against the valve seat 12, 82 by pressing force generated in the other side valve chamber 13a, 83a to close a second inflow outlet 12a, 821a.SELECTED DRAWING: Figure 2
【課題】簡便な構成の逆止弁及びそれを備えた液圧制御装置を提供する。【解決手段】逆止弁1、8は、弁本体11、81と弁座12、82とで区画された弁室13、83と、弁室13、83内に配置され、第一弾性部材9、91によって弁座12、82に接離可能に押し付けられて、弁室13、83を一方側弁室13b、83bと他方側弁室13a、83aとに区画する大径弁14、84と、他方側弁室13a、83aに配置される小径弁15、85と、小径弁15、85が弁座12、82から離れた状態で一方側弁室13b、83bと他方側弁室13a、83aとを連通させる小通路17、87と、を備え、小径弁15は、他方側弁室13a、83a内を移動可能に構成されるとともに、他方側弁室13a、83aから一方側弁室13b、83bへの移動が規制され、他方側弁室13a、83a内で生じる押圧力により弁座12、82に当接して第二流入出口12a、821aを閉鎖する。【選択図】図2
CHECK VALVE AND HYDRAULIC CONTROL DEVICE
逆止弁及び液圧制御装置
2016-12-08
Patent
Electronic Resource
Japanese