| CPC F16F 15/03 (2013.01) [F16F 6/00 (2013.01); F16F 2222/06 (2013.01); F16F 2230/08 (2013.01)] | 20 Claims |
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1. A shock absorber comprising:
a cylinder including a shock-absorbing surface configured to relieve an impact of an object,
wherein the shock-absorbing surface is a slanted surface slanted with respect to a first radial direction of the cylinder substantially perpendicular to an axial direction of the cylinder;
a piston rod including a first end receiving the object and, in response to the impact of the object, movably inserted into an inner space of the cylinder in the axial direction of the cylinder through the slanted surface, wherein the piston rod moves with respect to the slanted surface;
a magnet installed at a second end of the piston rod opposite to the first end of the piston rod to be moved together with the piston rod;
an electromagnet coil configured to generate a repulsive force against the magnet; and
a sensor disposed at the inner space of the cylinder and configured to detect the magnet and cause the electromagnet coil to receive a current from a power source.
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