Abstract: A body valve assembly of a frequency sensitive shock absorber includes: a body valve main body; a body pin penetrating and fastened to the body valve main body and having a body inlet flow path formed therein in communication with a compression chamber; a body main retainer having a body main chamber formed therein in communication with the body inlet flow path; a body main valve configured to open and close the body main chamber; a body pilot housing having one side facing the body main valve and the other side on which a body pilot chamber is formed in communication with the body inlet flow path; and a free piston accommodated in the body pilot chamber and installed to press the body pilot housing in a direction toward the body main valve when pressure in the body pilot chamber increases above a predetermined pressure.

Abstract: A piston valve assembly of a frequency sensitive shock absorber includes a piston valve main body mounted on the piston rod and having a piston inlet flow path formed therein in communication with a rebound chamber, a piston main retainer having a piston main chamber formed therein in communication with the piston inlet flow path, a piston main valve configured to open and close the piston main chamber, a piston pilot housing coupled to the piston rod between the piston main valve and the piston valve main body and having a piston pilot chamber formed therein in communication with the piston inlet flow path, and a pilot valve configured to cover the piston pilot chamber and press the piston main valve to close the piston main chamber when pressure in the piston pilot chamber increases above a predetermined pressure.

Abstract: Disclosed is a frequency sensitive type shock absorber including a piston rod reciprocating an inside of a cylinder and having a connection passage therein; a piston valve mounted on the piston rod and having a plurality of compression and rebound flow paths penetrating up and down thereof, and partitioning the cylinder into compression and rebound chambers; and a valve assembly mounted on the piston rod to generate a damping force that changes with frequency during a rebound stroke; wherein the valve assembly comprises a housing coupled to the piston rod and having a pilot chamber in communication with the connection passage; a main retainer coupled to the piston rod and having a main chamber formed on an upper portion thereof in communication with the connection passage; a first pilot valve coupled to the piston rod and disposed between the housing and the main retainer to partition the pilot chamber and the main chamber; and a second pilot valve coupled to the piston rod and disposed above the pilot chambe

Abstract: The present disclosure relates to a frequency sensitive shock absorber, and the frequency sensitive shock absorber includes a piston rod coupled so that one side is located inside a cylinder and the other side is located outside the cylinder, a main valve coupled to the piston rod and partitioning an inner space of the cylinder into a compression chamber and a tension chamber, a sub-piston rod coupled to one side of the piston rod and interlocked with the piston rod to reciprocate along a longitudinal direction of the cylinder, and a sub-valve module coupled to the sub-piston rod and generating a damping force according to a frequency during a tension stroke.

Abstract: Disclosed is a frequency sensitive type shock absorber including a piston rod reciprocating an inside of a cylinder and having a connection passage therein; a piston valve mounted on the piston rod and having a plurality of compression and rebound flow paths penetrating up and down thereof, and partitioning the cylinder into compression and rebound chambers; and a valve assembly mounted on the piston rod to generate a damping force that changes with frequency during a rebound stroke; wherein the valve assembly comprises a housing coupled to the piston rod and having a pilot chamber in communication with the connection passage; a main retainer coupled to the piston rod and having a main chamber formed on an upper portion thereof in communication with the connection passage; a first pilot valve coupled to the piston rod and disposed between the housing and the main retainer to partition the pilot chamber and the main chamber; and a second pilot valve coupled to the piston rod and disposed above the pilot chambe