Abstract: Disclosed is a damper for continuously variably adjusting a damping force that includes: a cylinder; a piston rod that is inserted into the cylinder and moves back and forth; a piston valve that is coupled to a bottom portion of the piston rod and moves back and forth in the cylinder according to the movement of the piston rod; a MR fluid that fills the cylinder and moves between a tension space over the piston valve and a compression space below the piston valve; and a volume compensation means that is located in the cylinder and compensates for a volume change of an inner space of the cylinder due to the movement of the piston rod, the volume compensation means including: a floating plunger that is configured to be below the piston valve and capable of moving up and down; a coil spring that is coupled to a bottom surface of the floating plunger and supports the floating plunger; and a support cup that is fixed onto the cylinder, coupled to a bottom portion of the coil spring to support the coil spring, and

Abstract: The present invention relates to a cylinder which has hollow portion therein; a piston rod which is inserted through an upper side of the cylinder and has a groove pattern having plurality of convex portions and concave portions which are alternately formed; a piston valve which is connected with a lower end of the piston rod so as to be reciprocated in the cylinder and has a fluid passing hole which is formed in an up and down direction; a rod guide which closes up an upper end of the cylinder tightly and guides an up-down movement of the piston rod and which has a through-hole at a side portion thereof; and a sensor module which is installed to the rod guide so as to detect a movement of the piston rod by using a variation in magnetic field generated when the piston rod is moved.

Abstract: Disclosed is a damper for continuously variably adjusting a damping force that includes: a cylinder; a piston rod that is inserted into the cylinder and moves back and forth; a piston valve that is coupled to a bottom portion of the piston rod and moves back and forth in the cylinder according to the movement of the piston rod; a MR fluid that fills the cylinder and moves between a tension space over the piston valve and a compression space below the piston valve; and a volume compensation means that is located in the cylinder and compensates for a volume change of an inner space of the cylinder due to the movement of the piston rod, the volume compensation means including: a floating plunger that is configured to be below the piston valve and capable of moving up and down; a coil spring that is coupled to a bottom surface of the floating plunger and supports the floating plunger; and a support cup that is fixed onto the cylinder, coupled to a bottom portion of the coil spring to support the coil spring, and

Abstract: The present invention relates to a cylinder which has hollow portion therein; a piston rod which is inserted through an upper side of the cylinder and has a groove pattern having plurality of convex portions and concave portions which are alternately formed; a piston valve which is connected with a lower end of the piston rod so as to be reciprocated in the cylinder and has a fluid passing hole which is formed in an up and down direction; a rod guide which closes up an upper end of the cylinder tightly and guides an up-down movement of the piston rod and which has a through-hole at a side portion thereof; and a sensor module which is installed to the rod guide so as to detect a movement of the piston rod by using a variation in magnetic field generated when the piston rod is moved.