| 发明名称 |
SPINDLE MOTOR AND RECORDING DISK DRIVING DEVICE INCLUDING THE SAME |
| 摘要 |
There is provided a spindle motor including: a rotating member including a protrusion portion protruded so as to form a clearance narrower than a bearing clearance; and a fixed member having a protrusion corresponding portion protruded so as to be disposed to face the protrusion portion and rotatably supporting the rotating member, wherein the protrusion portion includes a thrust dynamic pressure groove formed therein in order to generate thrust fluid dynamic pressure and has a radial length smaller than that of the protrusion corresponding portion disposed to face the thrust dynamic pressure groove and having a flat surface. |
| 申请公布号 |
US2014218819(A1) |
申请公布日期 |
2014.08.07 |
| 申请号 |
US201313916300 |
申请日期 |
2013.06.12 |
| 申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
BANG Je Hyun;Jang Ho Kyung |
| 分类号 |
H02K7/08;G11B17/34;G11B5/012 |
主分类号 |
H02K7/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A spindle motor comprising:
a rotating member including a protrusion portion protruded so as to form a clearance narrower than a bearing clearance; and a fixed member having a protrusion corresponding portion protruded so as to be disposed to face the protrusion portion and rotatably supporting the rotating member, wherein the protrusion portion includes a thrust dynamic pressure groove formed therein in order to generate thrust fluid dynamic pressure and has a radial length smaller than that of the protrusion corresponding portion disposed to face the thrust dynamic pressure groove and having a flat surface. |
| 地址 |
Suwon KR |
