Actuation mechanism for controllable damper
US9987900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2014 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Oct 28, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/11
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid damper assembly for use in a vehicle includes a piston subassembly which includes a plurality of inflow passages and at least one rebound disk for restricting flow of hydraulic fluid through the inflow passages. A rod extends through the piston subassembly to actuate the piston subassembly between a rebound stroke and a compression stroke. An actuator supported by and within the rod includes a piezoelectric device and an amplifier for adjusting the damping force during the rebound stroke, thereby adjusting the suspension of the vehicle. A shaft within the rod is connected to a retainer to transmit motion from the amplifier to compress a spring and disengage the retainer from the rebound disk to allow the rebound disk to flex solely in response to hydraulic fluid pressure from the rebound stroke to open the inflow passages and reduce the damping force during the rebound stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.