Valve structure of shock absorber having variable flow channel
US8844687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2012 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Aug 24, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/5126
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a valve structure of a shock absorber which forms flow channels in two directions of working fluid passing through the valve structure so as to slow change of damping force when the moving velocity of a piston is changed between a low velocity and a middle and high velocity and forms one of the two flow channels as a variable flow channel to improve ride comfort of a vehicle. The valve structure includes a piston valve assembly installed at the end of the piston rod and operated to generate damping force varied according to moving velocity of a working fluid, and a variable valve assembly moving together with the piston valve assembly to vary damping force to slow change of a damping force curve when the flow velocity of the working fluid is changed between a low velocity and a middle and high velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.