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US 2016/0078896 A1Published application
Spindle motor and hard disk drive including the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorHoon Hee HAN
Life of this patent
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Abstract
A spindle motor includes a stator, and a rotor forming a bearing clearance with the stator. The rotor is provided with an insertion groove formed therein into which a portion of the stator is inserted, and first and second sealing parts having liquid-vapor interfaces formed therein, respectively, are formed inside and outside the insertion groove, respectively. The first and second sealing parts are in communication with each other via a connection hole.
Claims10
A spindle motor comprising:
- a stator;
- and
- a rotor forming a bearing clearance with the stator,
- wherein the rotor is provided with an insertion groove formed therein into which a portion of the stator is inserted, and
- first and second sealing parts having liquid-vapor interfaces formed therein, respectively, are formed inside and outside the insertion groove, respectively,
- the first and second sealing parts being in communication with each other via a connection hole.
3 more elements
A spindle motor comprising:
- a base member having an installation hole formed therein;
- a lower thrust member inserted into the installation hole of the base member;
- a shaft having a lower end portion fixed to the lower thrust member;
- an upper thrust member fixed to an upper end portion of the shaft;
- a sleeve provided with an insertion groove formed therein into which the upper thrust member is inserted, and forming bearing clearances with the lower thrust member, the shaft, and the upper thrust member;
- and
- a rotor hub fixed to the sleeve to rotate with the sleeve,
- wherein an inner peripheral surface and an outer peripheral surface of an outer wall portion of the sleeve, in which the insertion groove is formed, respectively have an liquid-vapor interface formed therein, and
- the outer wall portion has a connection hole formed therein to connect the bearing clearances to each other.
6 more elements
Dependencies are inferred from the claim text.