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US 2013/0154417 A1Published application
Spindle motor
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorHoon Hee HAN
Life of this patent
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Abstract
There is provided a spindle motor, including: a shaft directly or indirectly fixed to a base; a rotor hub rotatably disposed via oil while maintaining a bearing gap from the shaft and including a communicating part in communication with the outside so that a fluid-air interface is formed between the rotor hub and the shaft; and a compensating part formed by allowing a predetermined area of the rotor hub to be depressed so as to compensate for mass unbalance of the rotor hub due to the communicating part.
Claims9
A spindle motor, comprising:
- a shaft directly or indirectly fixed to a base;
- a rotor hub rotatably disposed via oil while maintaining a bearing gap from the shaft and including a communicating part in communication with the outside so that a fluid-air interface is formed between the rotor hub and the shaft;
- and
- a compensating part formed by allowing a predetermined area of the rotor hub to be depressed so as to compensate for mass unbalance of the rotor hub due to the communicating part.
1 more element
Dependencies are inferred from the claim text.