Shock absorber

A shock absorber comprising:

• a tube having an inner chamber inside;
• a piston rod having one end portion in an axial direction disposed in the tube and the other end portion in the axial direction disposed outside the tube;
• a piston assembly connected to an intermediate position of the piston rod in the axial direction, dividing the inner chamber into a first chamber on the other end portion side of the piston rod and a second chamber on the one end portion side of the piston rod, and configured to generate a damping force when the piston rod moves;
• a damping force increasing mechanism increasing the damping force when the piston assembly moves to the second chamber side;
• a body valve assembly provided on a side of the second chamber opposite to the piston assembly;
• and
• a support member provided above the body valve assembly and configured to support the partition piston, wherein
• the damping force increasing mechanism includes:
• a first cylinder connected to the one end portion side of the piston rod with respect to the piston assembly;
• and
• a partition piston entering an inside of the first cylinder to form a partition chamber in the first cylinder when the piston assembly moves to the second chamber side,
• wherein the support member is a second cylinder having a smaller diameter than the first cylinder, and
• wherein a communication passage through which air inside the second cylinder is allowed to flow is provided between the partition piston and the second cylinder.