MAGNETORHEOLOGICAL FLUID SHOCK ABSORBER

摘要

The entire length of a piston (20) of a magnetorheological fluid shock absorber (100) is reduced. The piston (20) includes a piston core (30) mounted on an end portion of a piston rod (21) and having a coil (33) provided on an outer periphery, a flux ring (35) surrounding the outer periphery of the piston core (30) and forming a flow passage for a magnetorheological fluid, a plate (40) formed annularly, arranged on an outer periphery of the piston rod, and joined to one end of the flux ring (35) through brazing, and a stopper containing a fixing nut (50). The flux ring (35) and the plate (40) are joined by a metal layer.

主权项

1. A magnetorheological fluid shock absorber comprising:
a cylinder in which a magnetorheological fluid whose viscosity is changed by an action of a magnetic field is sealed; a piston slidably arranged in the cylinder and defining a pair of fluid chambers in the cylinder; and a piston rod connected to the piston and extending to an outside of the cylinder, wherein the piston includes: a piston core mounted on an end portion of the piston rod and having a coil provided on an outer periphery; a ring body surrounding the outer periphery of the piston core and forming a flow passage for a magnetorheological fluid between the ring body and the piston core; a plate formed annularly, arranged on the outer periphery of the piston rod, and joined by a metal layer through brazing to one end of the ring body; and a stopper sandwiching the plate between the stopper and the piston core.