Patent ID: 9022187
Filing Date: 2015-05-05
Classification: F16F

Abstract:
1. A damping valve for a shock absorber, comprising: a valve disc that delimits a cylinder interior filled with a working fluid; a port provided in the valve disc to connect fluid chambers delimited by the valve disc; an annular leaf valve that is laminated onto the valve disc and is capable of moving in an axial direction of the valve disc so as to open and close the port in accordance with a differential pressure between the fluid chambers; and a biasing mechanism that biases the leaf valve in a direction for closing the port, wherein the biasing mechanism comprises: a shaft member constituted by a non-magnetic body, the leaf valve being disposed to be free to slide on an outer periphery of the shaft member; a moving magnet that is disposed to be free to slide on the outer periphery of the shaft member; and a fixed magnet that is disposed fixedly opposite the moving magnet via a predetermined gap, and generates a repulsive force that repels the moving magnet, the moving magnet biases the leaf valve toward the valve disc using the repulsive force.