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US 2006/0039633 A1Published application
Fluid dynamic bearing unit
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsChing-Hsing Huang, Wun-Chang Shih, Hsien-Sheng Pei
Life of this patent
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Abstract
A fluid dynamic bearing unit includes a bearing housing (20) axially defining therein a bearing hole (21), a rotary shaft rotatably received in the bearing hole with a radial space formed between the rotary shaft and the bearing housing, and lubricant filled in the radial space. A ventilating path (25) is formed in a wall of the bearing housing to communicate a bottom of the bearing hole with an exterior of the bearing housing.
Claims20
A fluid dynamic bearing unit comprising:
- an integral bearing housing axially defining therein a bearing hole;
- a rotary shaft rotatably received in the bearing hole with a radial space formed between the rotary shaft and the bearing housing;
- lubricant filled in the radial space;
- and
- a ventilating path formed in a wall of the bearing housing to communicate a bottom of the bearing hole with an exterior of the bearing housing.
2 more elements
A fluid dynamic bearing unit comprising:
- a housing;
- a bearing member fixedly mounted in the housing;
- and
- a rotary shaft rotatably received in the bearing member with a radial space formed between the rotary shaft and the bearing member, the radial space filled with lubricant to establish dynamic pressure to separate the shaft and the bearing member in radial direction when the rotary shaft rotates;
- wherein
- the bearing member defines therein a ventilating path to communicate an interior with an exterior of the bearing member and the ventilating path is formed prior to attachment of the bearing member in the housing.
3 more elements
A fluid dynamic bearing unit comprising:
- a bearing defining a blind hole with a closed end and a ventilating path communcating the closed end of the hole with exterior of the bearing;
- a rotary shaft rotatably received in the hole;
- a bearing pattern being formed in at least one of said bearing and the shaft and comprising a plurality of continuous pressure generating grooves communicating with each other;
- and
- fluid received in the bearing pattern for applying pressure to the shaft when the shaft rotates in said hole.
2 more elements
Dependencies are inferred from the claim text.