Electronically controlled internal damper
AssigneeHl Mando Corporation
InventorsJongsun Lee, Wonbeen Im
Life of this patent
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Abstract
An electronically controlled internal damper includes an outer housing reciprocated in a cylinder and partitioning the cylinder into an upper chamber and a lower chamber, an inner housing disposed inside the outer housing and forming a main flow path which makes the upper chamber and the lower chamber of the cylinder communicate with each other, a main poppet disposed in the inner housing to be movable up and down, thus opening or closing the main flow path, a pilot poppet configured such that at least a portion thereof is accommodated in an upper portion of the main poppet and adjusting an opening force of the main flow path according to a control current applied to a valve, and a soft valve coupled to a lower portion of the outer housing.
Claims13
An electronically controlled internal damper comprising:
- an outer housing reciprocated in a cylinder and partitioning the cylinder into an upper chamber and a lower chamber;
- an inner housing disposed inside the outer housing, and forming a main flow path which makes the upper chamber and the lower chamber of the cylinder communicate with each other;
- a main poppet disposed in the inner housing to be movable up and down, thus opening or closing the main flow path;
- and
- a pilot poppet configured such that at least a portion thereof is accommodated in an upper portion of the main poppet, and configured to adjust an opening force of the main flow path according to a control current applied to a valve,
- wherein the main flow path is formed along an outer through hole formed in the outer housing and a first inner through hole formed at a height corresponding to that of the outer through hole in the inner housing, and is opened or closed depending on pressure at which the working fluid pushes the main poppet upwards.
Dependencies are inferred from the claim text.