Damping force controlling shock absorber
AssigneeHl Mando Corporation
InventorNamho Kim
Life of this patent
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Abstract
A damping force variable shock absorber of the present disclosure is disclosed. The damping force variable shock absorber includes a cylinder having an inner tube and an outer tube filled with a fluid, a housing coupled to a lower end of a piston rod located inside of the inner tube and forming a connection passage therein, a magnet member provided inside the housing, a plunger moving by magnetic force of the magnet member, a first piston valve coupled to the outside of the housing to divide a compression chamber from a rebound chamber, and a second piston valve provided in the housing, wherein the connection passage is provided such that at least a part of the fluid flowing toward the first piston valve is bypassed to the second piston valve side by the opening and closing of the plunger.
Claims9
A damping force variable shock absorber comprising:
- a cylinder;
- a housing coupled to a lower end of a piston rod and forming a connection passage therein;
- a magnet member provided inside the housing;
- a plunger moving by magnetic force of the magnet member;
- a first piston valve contacting an inner tube of the cylinder and coupled to an outside of the housing to divide a compression chamber from a rebound chamber;
- and
- a second piston valve coupled the housing,
- wherein the plunger includes:
- a disk-shaped plunger body disposed on an underside of the magnet member;
- a plunger hole formed in the plunger body;
- a protrusion formed on an upper portion of the plunger body;
- and
- a blocking portion protruding from a lower portion of the plunger body and configured to open or close the connection passage of the housing by a vertical moving of the plunger body, and
- wherein the connection passage is configured to be opened such that the at least a part of the fluid passes through a first housing hole opened by the plunger and a second housing hole provided between the first piston valve and the second piston valve, and when the plunger is moved to a hard mode the plunger closes the connection passage so that the fluid passes through the first and second piston valves, and when the plunger is moved in a soft mode the plunger opens the connection passage so that the fluid passes through the second piston valve through the connection passage.
Dependencies are inferred from the claim text.