CA2559583A1 - Splined vibration damping device using er fluids - Google Patents
Splined vibration damping device using er fluids Download PDFInfo
- Publication number
- CA2559583A1 CA2559583A1 CA002559583A CA2559583A CA2559583A1 CA 2559583 A1 CA2559583 A1 CA 2559583A1 CA 002559583 A CA002559583 A CA 002559583A CA 2559583 A CA2559583 A CA 2559583A CA 2559583 A1 CA2559583 A1 CA 2559583A1
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- grooves
- duct
- vehicle
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A vibration damping device for mounting between two spaced portions of a vehicle for absorbing road forces exerted on the vehicle. An inner metal cylindrical housing forms an internal piston chamber and is connected at one end to one portion of the vehicle, with the outer end of the rod of a piston which is slidably mounted within the piston chamber, being connected to the other portion of the vehicle. An outer housing surrounds a portion of the inner housing and forms a fluid transfer duct or flow channel between fluid chambers formed on opposite sides of the piston within the piston chamber. An electrode is mounted in the fluid duct for applying a voltage across the duct to affect the viscosity of an electrorheological (ER) fluid flowing therethrough to increase the damping force of the device. The electrode includes a plurality of circumferentially spaced splines and intervening grooves extending longitudinally along the fluid duct. The bottom portions of the grooves have a decreased electric field applied thereto than the splines, providing bleed grooves or leak paths for the ER fluid to decrease the shear-rate of the fluid. The inner housing may be formed with elongated projections which extend into the grooves of the electrode to provide a more uniform electric field along the fluid duct to control the amount of leakage through the bleed grooves. A secondary electrode ground may be formed in the grooves to control the electric field in the bleed grooves.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/544,079 US5588509A (en) | 1995-10-17 | 1995-10-17 | Splined vibration damping device using ER fluids |
US08/544,079 | 1995-10-17 | ||
CA002184235A CA2184235C (en) | 1995-10-17 | 1996-08-27 | Splined vibration damping device using er fluids |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002184235A Division CA2184235C (en) | 1995-10-17 | 1996-08-27 | Splined vibration damping device using er fluids |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2559583A1 true CA2559583A1 (en) | 1997-04-18 |
CA2559583C CA2559583C (en) | 2007-05-29 |
Family
ID=37310273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002559583A Expired - Fee Related CA2559583C (en) | 1995-10-17 | 1996-08-27 | Splined vibration damping device using er fluids |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2559583C (en) |
-
1996
- 1996-08-27 CA CA002559583A patent/CA2559583C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2559583C (en) | 2007-05-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20160829 |