Detection of damping force for shock absorber control
US5105918A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 23, 1989 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Oct 23, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A damping force detecting apparatus for detecting a damping force of a variable damping force type shock absorber including a cylinder and a piston slidably inserted thereinto. The damping force detecting apparatus comprises a piezoelectric element assembly for generating a charge corresponding to a pressure applied thereto and a pressurizing device for pressurizing the piezoelectric element assembly. The piezoelectric element assembly has a diameter smaller than a cylindrical piston rod fixedly secured to the piston and is housed therein. The pressurizing device is screwed into the piston rod so as to be in contact relation to the piezoelectric element assembly for pressurizing the piezoelectric element assembly in correspondance with a distortion of the piston rod generated in the sliding directions of the piston with respect to the cylinder due to expanding and contracting action of the shock absorber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.