Shock absorber

摘要

A shock absorber has an inclined surface that is inclined to a moving direction of the free piston in at least one of a free piston contact surface of a free piston with which an elastic body is in contact and a housing contact surface of a housing with which the elastic body is in contact. A shortest distance between the free piston contact surface and the housing contact surface is changed by movement of the free piston.

主权项

1. A shock absorber comprising:
a cylinder in which a working fluid is enclosed; a piston which is provided in the cylinder and configured to partition an interior of the cylinder into two chambers; a piston rod which is connected to the piston and arranged so as to extend to an exterior of the cylinder; a first passage to which the working fluid flows out from one of the chambers of the interior of the cylinder with movement of the piston; a damping force generation mechanism which is installed in the first passage and configured to generate a damping force; a housing; a free piston which is movable in the housing; a second passage which communicates between a space formed by the housing and the free piston and one of the chambers of the interior of the cylinder, and in which the working fluid flows with movement of the piston; and at least one elastic body which is disposed between the free piston and the housing, wherein at least one of the free piston and the housing is formed so that the at least one elastic body is compressively deformed in both a moving direction of the free piston and a different direction from the moving direction; and wherein at least one elastic body includes a first elastic body that undergoes compressive deformation when the free piston moves in a first direction, and a second elastic body that undergoes compressive deformation when the first piston moves in a second direction opposite the first direction.