Apparatus for shock absorbing

A shock absorbing apparatus comprising:

• a block having a through hole vertically penetrating the block, and a first flow path, a second flow path, and a third flow path;
• a first tube extending vertically through the through hole and having a penetration portion that penetrates an inner circumferential surface and an outer circumferential surface of the first tube so that an interior of the first tube is in fluid communication with the first flow path;
• a piston assembly disposed inside the first tube and configured to performing a compression stroke or a rebound stroke, the piston assembly including:
• a piston valve that partitions the first tube into a rebound chamber on the upper side and a compression chamber on the lower side, and a piston rod coupled to the piston valve;
• a second tube disposed to surround a portion of the first tube that extends below the block and forming a first intermediate chamber between the second tube and the first tube, the first intermediate chamber providing fluid communication between the compression chamber and the second flow path;
• a first valve disposed at a lower end of the first tube, the first valve partitioning the compression chamber and the first intermediate chamber and allowing fluid in the compression chamber to flow into the first intermediate chamber;
• a third tube disposed to surround a portion of the first tube that extends above the block and forming a second intermediate chamber between the third tube and the first tube, the second intermediate chamber providing fluid communication between the rebound chamber and the third flow path;
• a reservoir in fluid communication with the first flow path and the second flow path;
• and
• a second valve disposed between the first flow path and the reservoir, the second valve being electronically controlled and configured to control fluid flow from the first flow path to the reservoir during a compression stroke of the piston assembly.