Rolling bearing device, oil supply unit, method of supplying lubricating oil, and program
US10520032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Feb 6, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2240/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rolling bearing device includes: a bearing portion that has an inner ring, an outer ring, a plurality of balls, and a cage that holds the plurality of balls; and an oil supply unit that supplies lubricating oil to the bearing portion. The oil supply unit has: a pump that discharges the lubricating oil through drive of a piezo element; a voltage boost portion that boosts a voltage to be applied to the piezo element; and a control portion that causes the pump to operate while varying a voltage boost time included in a period since the start of voltage boost by the voltage boost portion until the start of the drive of the piezo element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.