A hydraulic-pressure buffering device includes a cylinder, a piston unit provided movably in the cylinder to partition a space in the cylinder into a first oil chamber and a second oil chamber, an outer side piston unit fixed to a rod unit, an inner side piston unit provided movably relative to the outer side piston unit, a first channel that allows a flow of oil from the first oil chamber to the second oil chamber, a second channel that allows a flow of the oil from the second oil chamber to the first oil chamber, a compression side valve unit fixed to the inner side piston unit and brought into contact with the outer side piston unit, and an extension side valve unit fixed to the outer side piston unit and brought into contact with the inner side piston unit.
PRESSURE BUFFERING DEVICE AND DAMPING-FORCE GENERATING MECHANISM
2017-07-20
Patent
Electronic Resource
English
European Patent Office | 2023
|Damping force generating mechanism and pressure shock absorber
European Patent Office | 2022
|Damping force generating mechanism and pressure shock absorber
European Patent Office | 2023
|Elevator system capable of progressively buffering damping force
European Patent Office | 2015
|