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US 12,472,789 B2Granted
Hydraulic stopping damper
AssigneeHl Mando Corporation
InventorEun Joong Kim
Life of this patent
Estimating the term…
Abstract
Present disclosure A hydraulic stopping damper includes a cylinder in which a work fluid is stored, a piston rod coupled such that one side of the piston rod is to be inserted into an inner space of the cylinder, and a rod guide through which the piston rod passes and coupled to one side of the cylinder. The hydraulic stopping damper includes a rebound spring surrounding the piston rod and disposed in an inner space of the cylinder, and a shock mitigator between the rod guide and the rebound spring, the shock mitigator configured to generate a damping force by a hydraulic pressure of the work fluid when one side of the rebound spring compressed in response to a rebound stroke of the piston rod is inserted into the rod guide.
Claims16
A hydraulic stopping damper comprising:
- a cylinder in which a work fluid is stored;
- a piston rod coupled such that one side of the piston rod is to be inserted into an inner space of the cylinder;
- a rod guide through which the piston rod passes and coupled to one side of the cylinder;
- a rebound spring surrounding the piston rod and disposed in an inner space of the cylinder;
- and
- a shock mitigator between the rod guide and the rebound spring, the shock mitigator configured to generate a damping force by a hydraulic pressure of the work fluid when one side of the rebound spring compressed in response to a rebound stroke of the piston rod is inserted into the rod guide,
- wherein
- the shock mitigator comprises:
- a chamber formed between the shock mitigator and the rod guide;
- and
- a first spring guide coupled to one side of the rebound spring and including an upper side inserted into the chamber during the rebound stroke of the piston rod,
- the rod guide comprises:
- a body portion inserted into the cylinder;
- and
- a first locking portion extending from an upper surface of the body portion and caught by the cylinder such that the body portion is not inserted past a predetermined length,
- the first spring guide comprises:
- an insertion portion inserted into the rebound spring;
- and
- a second locking portion extending from an upper surface of the insertion portion, formed to have an outer diameter larger than an outer diameter of the insertion portion, and caught by one side of the rebound spring, wherein the second locking portion is inserted into the chamber,
- the chamber comprises:
- a first recess formed concavely by a predetermined depth in a direction from a lower surface of the body portion toward an upper surface of the first locking portion;
- and
- a second recess formed concavely by a predetermined depth in a direction from the first recess toward the upper surface of the first locking portion, and a width of a first space when the second locking portion is inserted into the first recess is larger than a width of a second space when the second locking portion is inserted into the second recess.
20 more elements
A hydraulic stopping damper comprising:
- a cylinder in which a work fluid is stored;
- a piston rod coupled such that one side of the piston rod is to be inserted into an inner space of the cylinder;
- a rod guide through which the piston rod passes and coupled to one side of the cylinder;
- a rebound spring surrounding the piston rod and disposed in an inner space of the cylinder;
- and
- a shock mitigator between the rod guide and the rebound spring, the shock mitigator configured to generate a damping force by a hydraulic pressure of the work fluid when one side of the rebound spring compressed in response to a rebound stroke of the piston rod is inserted into the rod guide,
- wherein the shock mitigator comprises:
- a chamber formed between the shock mitigator and the rod guide;
- and
- a first spring guide coupled to one side of the rebound spring and including an upper side inserted into the chamber during the rebound stroke of the piston rod,
- the first spring guide comprises:
- an insertion portion inserted into the rebound spring;
- and
- a second locking portion extending from an upper surface of the insertion portion, formed to have an outer diameter larger than an outer diameter of the insertion portion, and caught by one side of the rebound spring, wherein the second locking portion is inserted into the chamber,
- an outer diameter of the second locking portion is smaller than an inner diameter of the chamber such that a space is formed between an outer peripheral surface of the second locking portion and an inner peripheral surface of the chamber when the second locking portion is inserted into the chamber, and
- an inner surface of the chamber is tapered gradually decreasing from a lower side of the chamber to an upper side of the chamber to guide insertion of the second locking portion.
13 more elements
A hydraulic stopping damper comprising:
- a cylinder in which a work fluid is stored;
- a piston rod coupled such that one side of the piston rod is to be inserted into an inner space of the cylinder;
- a rod guide through which the piston rod passes and coupled to one side of the cylinder;
- a rebound spring surrounding the piston rod and disposed in an inner space of the cylinder;
- and
- a shock mitigator between the rod guide and the rebound spring, the shock mitigator configured to generate a damping force by a hydraulic pressure of the work fluid when one side of the rebound spring compressed in response to a rebound stroke of the piston rod is inserted into the rod guide,
- wherein
- the shock mitigator comprises:
- a chamber formed between the shock mitigator and the rod guide;
- and
- a first spring guide coupled to one side of the rebound spring and including an upper side inserted into the chamber during the rebound stroke of the piston rod,
- the first spring guide comprises:
- an insertion portion inserted into the rebound spring;
- and
- a second locking portion extending from an upper surface of the insertion portion, formed to have an outer diameter larger than an outer diameter of the insertion portion, and caught by one side of the rebound spring, wherein the second locking portion is inserted into the chamber,
- an outer diameter of the second locking portion is smaller than an inner diameter of the chamber such that a space is formed between an outer peripheral surface of the second locking portion and an inner peripheral surface of the chamber when the second locking portion is inserted into the chamber, and
- an outer peripheral surface of the second locking portion is tapered such that an outer diameter of the second locking portion gradually increases from the upper side to the lower side.
14 more elements
A hydraulic stopping damper comprising:
- a cylinder in which a work fluid is stored;
- a piston rod coupled such that one side of the piston rod is to be inserted into an inner space of the cylinder;
- a rod guide through which the piston rod passes and coupled to one side of the cylinder;
- a rebound spring surrounding the piston rod and disposed in an inner space of the cylinder;
- and
- a shock mitigator between the rod guide and the rebound spring, the shock mitigator configured to generate a damping force by a hydraulic pressure of the work fluid when one side of the rebound spring compressed in response to a rebound stroke of the piston rod is inserted into the rod guide,
- the shock mitigator comprises:
- a retainer provided on the piston rod to be located in an inner space of the cylinder and connected to a lower portion of the rod guide, wherein a chamber is formed below the retainer;
- and
- a first spring guide coupled to one side of the rebound spring and inserted into the chamber during a rebound stroke of the piston rod.
7 more elements
Dependencies are inferred from the claim text.