Valve device and shock absorber including the same
AssigneeHl Mando Corporation
InventorsYonghyun Kwon, Insu Park, Inyoung Oh, Chunsung Yu
Life of this patent
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Abstract
The present disclosure relates to a valve device and a shock absorber including same. The valve device for controlling a damping force, which is disposed, on one side of a piston having a passage through which fluid moves, inside a shock absorber, includes: a rebound retainer disposed on the one side of the piston and including a first rebound retainer chamber concavely formed in an annular shape to allow a portion of fluid passing through the passage to be stored, and a retainer hole formed in the first rebound retainer chamber; and a first disk for guiding fluid passing through the retainer hole to move through a slit formed in an outer circumferential surface thereof.
Claims20
A shock absorber comprising:
- a body in which fluid is stored;
- a piston disposed inside the body to form a compression chamber on one side and a rebound chamber on the other side, and having a rebound passage and a compression passage through which the compression chamber and the rebound chamber communicate with each other;
- a damping force adjusting unit, disposed on one side of the piston, for adjusting a damping force of the fluid passing through the rebound passage;
- a rebound valve that contacts at least a portion of the damping force adjusting unit, the rebound valve being opened and closed by a pressure of the fluid passing through the rebound passage to form a damping force;
- and
- a compression valve disposed on the other side of the piston, the compression valve being opened and closed by a pressure of the fluid passing through the compression passage to form a damping force,
- wherein the piston includes:
- a first piston chamber formed to store the fluid passing through the compression passage in a region facing the compression valve on the other side of the piston;
- and
- a second piston chamber formed to store the fluid passing through the rebound passage in a region facing the damping force adjusting unit on one side of the piston, the second piston chamber having a larger volume than that of the first piston chamber.
A valve device for controlling a damping force, which is disposed, on one side of a piston having a passage through which fluid moves, inside a shock absorber, the valve device comprising:
- a rebound retainer disposed on the one side of the piston and including a first rebound retainer chamber concavely formed in an annular shape to allow a portion of fluid passing through the passage to be stored, and a retainer hole formed in the first rebound retainer chamber;
- and
- a first disk for guiding fluid passing through the retainer hole to move through a slit formed in an outer circumferential surface thereof,
- wherein the rebound retainer further includes:
- a first protrusion that contacts a portion of the first disk adjacent to a central portion of the first disk;
- a second protrusion that contacts a portion of an outer peripheral portion of the first disk;
- a second rebound retainer chamber concavely formed between the first protrusion and the second protrusion and communicating with the retainer hole;
- and
- a third rebound retainer chamber, for storing fluid passing through the slit, spaced apart from the second rebound retainer chamber around the second protrusion.
A valve device for controlling a damping force, which is disposed, on one side of a piston having a passage through which fluid moves, inside a shock absorber, the valve device comprising:
- a rebound retainer disposed on the one side of the piston and including a first rebound retainer chamber concavely formed in an annular shape to allow a portion of fluid passing through the passage to be stored, and a retainer hole formed in the first rebound retainer chamber;
- and
- a first disk for guiding fluid passing through the retainer hole to move through a slit formed in an outer circumferential surface thereof,
- wherein the rebound retainer further includes:
- a first protrusion that contacts a portion of the first disk adjacent to a central portion of the first disk;
- and
- a second protrusion that contacts a portion of an outer peripheral portion of the first disk, wherein the second protrusion is formed to have a larger length in a direction away from the piston than the first protrusion.
Dependencies are inferred from the claim text.