Thrust bearing structure and supercharger equipped with said thrust bearing structure
US9470240B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/24
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A thrust bearing structure is equipped with a thrust collar having a collar pad, and a thrust bearing having a bearing pad at a position corresponding to the collar pad on a surface facing the thrust collar. The bearing pad has a tapered section, and a land section continuously formed on the outer edge of the tapered section. Assuming that oil droplets are supplied between the bearing pad and the collar pad, and assuming that the rotation speed of a rotor shaft is constant, the tapered section would have a sloping surface formed in such a manner that a wall thickness gradually becomes thicker toward the downstream side along the trajectory of given oil droplets based on the centrifugal forces acting on the droplets due to the rotation of the rotor shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.