Spindle motor
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHyuk Joo Kim, Bum Cho Kim, Young Ha Park, Tae Young Choi
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Abstract
Disclosed herein is a spindle motor having a fluid dynamic bearing as an oil gap formed between a rotator and a stator, wherein the stator includes a sleeve having a protruding part extending in a circumferential direction formed on the upper part thereof, the rotator includes a hub including an oil interface forming member positioned under the protruding part of the sleeve and coupled to the lower end thereof, and an oil interface of the oil gap is formed between the upper part of the oil interface forming member and the lower part of the protruding part of the sleeve.
Claims7
A spindle motor having a fluid dynamic bearing as an oil gap formed between a rotator and a stator, the spindle motor comprising:
- the stator comprising a sleeve having a protruding part extending in a circumferential direction formed on an upper part thereof;
- and
- the rotator comprising a hub including an oil interface forming member positioned under the protruding part of the sleeve and coupled to the hub,
- wherein an oil interface of the oil gap is formed between an upper part of the oil interface forming member and a lower part of the protruding part of the sleeve,
- the sleeve is provided with a groove part formed on the protruding part and to correspond to the oil interface forming member, and
- the oil interface forming member is provided with a projection part protruding towards the groove part of the sleeve.
Dependencies are inferred from the claim text.