Shock Absorber with Variable Damping
OwnerShu-Lin Kuoinventor
Life of this patent
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Abstract
The present invention relates to a shock absorber structure with variable damping, comprising an outer tube, a piston, a shaft, a plurality of spring sets, a cushioning piston cover set, an inlet regulating bolt, and a damping regulating bolt, wherein the outer tube is filled with damping oil. The shaft drives the piston by moving to the upper dead center to produce a primary damping of cushioning, and the cushioning piston cover set and the inlet regulating bolt produce a secondary damping of cushioning to achieve the effect of variable damping. When the shaft reaches the lower dead center, the spring set rebounds and pushes the cushioning piston cover set and the piston for displacement to achieve the cushioning state with variable damping and improve the overall shock absorption and cushioning effect.
Claims6
1 A shock absorber structure with variable damping, comprising an outer tube, a piston, and a shaft, wherein a tube cover is provided on both sides of the outer tube, and a perforated hole is provided on one side of the tube cover;
- a damping chamber is provided inside the outer tube with damping oil in the damping chamber;
- the piston is fixed to the shaft and is slidably provided inside the outer tube, and the shaft is slidably threaded through the perforated hole of the tube cover, and is characterized in that:
- the shaft is provided with an axial oil passage and at least one lateral oil passage communicating with each other, and the two side ends of the axial oil passage are provided with a first screwing part and a second screwing part inwardly;
- the piston is provided with a plurality of longitudinal oil guiding passages, and is further provided with a spring set, a cushioning piston cover set, an inlet regulating bolt, and a damping regulating bolt, wherein the spring set is provided with a cushioning spring and an auxiliary spring, and the cushioning piston cover set is provided with a piston fitting chamber seat and a piston fitting cover, the piston fitting chamber seat is provided with a perforated hole on a closed side and equipped with several oil guiding holes on the side near the top edge, and the piston fitting cover is provided with a holding ring, and the piston fitting chamber seat is slidably sleeved with the piston fitting cover to enable the piston fitting cover to close and open the oil guiding holes provided by the piston fitting chamber seat;
- a plurality of lateral oil inlet ports and a central oil passage are provided by the inlet regulating bolt, and those lateral oil inlet ports and the central oil passage are communicated;
- the perforated hole of the piston fitting chamber seat corresponds to the first screwing part of the shaft near the axial oil passage, the inlet regulating bolt is threaded through the perforated hole of the piston fitting chamber seat and screwed to the first screwing part of the shaft, the cushioning piston cover set and the spring set are accommodated in the damping chamber of the outer tube, and the cushioning spring of the spring set is placed against the lower edge of the holding ring of the piston fitting cover on one side, and the auxiliary spring is placed against the upper edge of the holding ring of the piston fitting cover on one side and the other side is placed against the bottom of the piston, the damping regulating bolt is adjustable by screwing and securing to the second screwing part of the axial oil passage of the shaft.
The shock absorber structure with variable damping according to claim 1, wherein, a locking thread section is provided on the end side of the shaft and a locking internal thread is provided in the perforated hole of the piston fitting chamber seat, wherein the locking internal thread in the perforated hole of the piston fitting chamber seat and the locking thread section of the shaft are locked and fixed to each other.
The shock absorber structure with variable damping according to claim 1, wherein, the damping regulating bolt is adjustable by screwing and securing to the second screwing part of the axial oil passage of the shaft;
- by adjusting the damping regulating bolt so that it can be displaced within the axial oil passage of the shaft to open for conduction or close for blocking the relative lateral oil passage, to control whether or not the axial oil passage of the shaft is supplied with damping oil, and to adjust the softness and hardness of the elasticity of the shock absorber.
The shock absorber structure with variable damping according to claim 1, wherein, a convex ring is encircled on the outer periphery of the piston fitting chamber seat, and a stopping inner edge is provided on the inner side of the piston fitting cover, so that when the piston fitting chamber seat and the piston fitting cover slide together, the convex ring provided by the piston fitting chamber seat is restricted and stopped relative to the stopping inner edge of the piston fitting cover.
Dependencies are inferred from the claim text.