Patent ID: 9234560
Filing Date: 2016-01-12
CPC Classification: F16F,F16K

Claim Text:
1. A damping valve with an annular valve seat provided at an intermediate position of a flow path allowing communication between one chamber and another chamber, a valve body capable of being seated on and lifted from the valve seat and an actuator for driving the valve body in an axial direction, comprising: a valve case including a valve hole into which the valve body is slidably inserted, wherein: the valve body includes a valve main body and a shaft arranged on a side of the valve main body opposite to the valve seat, projecting out of the valve hole and configured to transmit a thrust force of the actuator to the valve main body; the valve main body includes a flange held in sliding contact with the inner periphery of the valve hole to partition the interior of the valve hole into a valve seat side chamber and an opposite valve seat side chamber, a shaft portion extending from the flange and projecting out of the valve hole and a valve head provided on a tip of the shaft portion to be seated on and lifted from the valve seat such that a damping passage is formed between the valve head and the valve seat; the valve seat side chamber and the opposite valve seat side chamber communicate via a communication passage; and the valve seat side chamber and the flow path communicate via a throttle passage provided independently of the damping passage.