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US 9,542,964 B2Granted
Pivot assembly bearing and hard disk drive device
AssigneeMinebea Co., Ltd.
InventorsAtsushi Kaneko, Kunihiro Tsuchiya
Life of this patent
Estimating the term…
Abstract
A pivot assembly bearing includes a shaft, a sleeve provided coaxially with the shaft, and a pair of rolling bearings arranged to be separated from each other in an axial direction between the shaft and the sleeve. The sleeve includes a ventilation path configured to communicate a region surrounded by the shaft, the pair of rolling bearings, and the sleeve with the outside of the sleeve.
Claims17
A pivot assembly bearing comprising:
- a shaft;
- a sleeve provided coaxially with the shaft;
- and
- a pair of rolling bearings arranged to be separated from each other in an axial direction between the shaft and the sleeve, wherein
- the sleeve includes a ventilation path configured to communicate a region surrounded by the shaft, the pair of rolling bearings and the sleeve with outside of the sleeve,
- the ventilation path includes at least one through hole provided in a peripheral wall of the sleeve, and
- a communication path configured to communicate at least one end of the sleeve with the through hole is provided at an outer peripheral surface of the sleeve.
4 more elements
A pivot assembly bearing comprising:
- a shaft;
- a sleeve provided coaxially with the shaft;
- and
- a pair of rolling bearings arranged to be separated from each other in an axial direction between the shaft and the sleeve, wherein
- the sleeve includes a ventilation path configured to communicate a region surrounded by the shaft, the pair of rolling bearings and the sleeve with outside of the sleeve, and
- the ventilation path includes a groove formed at a portion of an inner peripheral surface of the sleeve which contacts an outer ring of one of the rolling bearings.
3 more elements
A pivot assembly bearing comprising:
- a shaft;
- a sleeve provided coaxially with the shaft;
- and
- a pair of rolling bearings arranged to be separated from each other in an axial direction between the shaft and the sleeve, wherein
- the sleeve includes a ventilation path configured to communicate a region surrounded by the shaft, the pair of rolling bearings and the sleeve with outside of the sleeve, and
- the sleeve includes a filter configured to close the ventilation path.
3 more elements
A hard disk drive device comprising:
- a swing arm configured to move a magnetic head on a magnetic disc;
- and
- a pivot assembly bearing configured to support the swing arm in a swingable manner, the pivot assembly including:
- a shaft;
- a sleeve provided coaxially with the shaft;
- and
- a pair of rolling bearings arranged to be separated from each other in an axial direction between the shaft and the sleeve, wherein
- the sleeve includes a ventilation path configured to communicate a region surrounded by the shaft, the pair of rolling bearings, and the sleeve with outside of the sleeve,
- wherein the swing arm includes:
- a mounting hole into which the pivot assembly bearing is inserted;
- and
- a communication path on an inner peripheral surface of the mounting hole, the communication path communicating the ventilation path in the pivot assembly bearing with outside of the swing arm.
9 more elements
Dependencies are inferred from the claim text.