| US 7,572,059 B2 | ||
| Fluid circulating hydrodynamic pressure bearings | ||
| Tae Hyeong Lim, Gyeonggi-do (Korea, Republic of) | ||
| Assigned to Samsung Electro-Mechanics Co., Ltd., Tokyo (Japan) | ||
| Filed on Sep. 11, 2006, as Appl. No. 11/518,410. | ||
| Claims priority of application No. 10-2005-0090523 (KR), filed on Sep. 28, 2005. | ||
| Prior Publication US 2007/0071376 A1, Mar. 29, 2007 | ||
| Int. Cl. F16C 32/06 (2006.01) | ||
| U.S. Cl. 384—100 [384/107] | 10 Claims |
| 1. A fluid circulating hydrodynamic pressure bearing, the bearing comprising:
a driving member to drive recording media;
a supporting member to rotatably support the driving member to define a hydrodynamic pressure generating space between the
driving member and the supporting member, the supporting member being formed with a fluid outlet through which the fluid passes
at a predetermined position;
a plurality of recesses to generate hydrodynamic pressure, the recesses being formed on at least one of the driving member
and the supporting member to be opened toward the hydrodynamic pressure generating space; and
a fluid circulating member to circulate the fluid out-flowing from the fluid outlet to the hydrodynamic pressure generating
space, the fluid circulating member being fixedly combined with the driving member to slidably support the supporting member,
wherein the fluid circulating member has a fluid keeping space to keep the fluid out-flowing from the fluid outlet for a predetermined
time, and a fluid sending hole to send the fluid kept in the fluid keeping space to the hydrodynamic pressure generating space.
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