SHOCK ABSORBER Russian patent published in 2021 - IPC F16F9/48 

FIELD: vehicle suspension arrangements.

SUBSTANCE: invention relates to an apparatus for damping oscillations of vehicle suspensions. The shock absorber is comprised of a cylinder, a rod with a piston, and a compensation chamber. A throttle and safety valves for the compression and rebound strokes are installed in the piston. A plunger is fixed in the lower part of the cylinder, hermetically installed in the axial hole of the piston, and forms an annular channel in the blind axial hole of the rod. The channel communicates with the above-piston cavity via radial holes in the lower part of the rod and with the sub-piston cavity via an upper back valve, an axial channel inside the plunger, a lower back valve, and upper and lower radial holes in the lower part of the plunger. Radial holes connected with the axial channel are made in the middle part of the plunger. The middle part of the axial hole of the piston tightly interacts with the plunger. The upper and lower edges of the axial hole of the piston are made in form of truncated cones forming the upper and lower annular conical slots together with the plunger. The maximum cross-sectional area of the annular conical slots opposite the upper and lower ends of the piston is greater than or equal to the area of the throttle.

EFFECT: increased damping properties of the shock absorber and smooth run of vehicles on almost any type of road are achieved.

1 cl, 4 dwg