Patent ID: 9347512
Filing Date: 2016-05-24
CPC Classification: F16F,F16K

Claim Text:
1. A damping valve for a shock absorber, comprising: a valve disk partitioning the interior of a cylinder into one chamber and an other chamber; a retainer provided on an other chamber side of the valve disk without delimiting the interior of the cylinder; an inner peripheral side flow passage configured to include a plurality of valve disk through holes formed in an inner peripheral side of the valve disk, and a plurality of retainer through holes formed in the retainer, and allowing communication between the one and the other chambers; an outer peripheral side flow passage formed in an outer peripheral side of the valve disk and allowing communication between the one and the other chambers, the outer peripheral side flow passage directly opening to the other chamber; and a leaf valve in the form of an annular plate arranged on a side of the retainer opposite to the valve disk and configured to openably close the inner peripheral side flow passage by an outer peripheral part; wherein the cross-sectional area of the plurality of retainer through holes is larger than that of the plurality of valve disk through holes.