IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0243788
(2008-10-01)
|
등록번호 |
US-8416522
(2013-04-09)
|
발명자
/ 주소 |
- Schott, Brian P.
- Larson, Nils E.
|
출원인 / 주소 |
- Western Digital Technologies, Inc.
|
인용정보 |
피인용 횟수 :
50 인용 특허 :
12 |
초록
▼
A disk drive motor hub includes a top cylindrical portion defining a longitudinal axis, a middle cylindrical portion proximate the top cylindrical portion, and a bottom cylindrical portion proximate the middle cylindrical portion. The middle cylindrical portion defines an upper mounting surface subs
A disk drive motor hub includes a top cylindrical portion defining a longitudinal axis, a middle cylindrical portion proximate the top cylindrical portion, and a bottom cylindrical portion proximate the middle cylindrical portion. The middle cylindrical portion defines an upper mounting surface substantially normal to the longitudinal axis, the upper mounting surface extending radially beyond the top cylindrical portion, and the bottom cylindrical portion defines a lower mounting surface substantially normal to the longitudinal axis, the lower mounting surface extending radially beyond the middle cylindrical portion.
대표청구항
▼
1. A motor hub comprising: a top cylindrical portion defining a longitudinal axis;a middle cylindrical portion proximate the top cylindrical portion, the middle cylindrical portion defining an upper mounting surface substantially normal to the longitudinal axis, the upper mounting surface extending
1. A motor hub comprising: a top cylindrical portion defining a longitudinal axis;a middle cylindrical portion proximate the top cylindrical portion, the middle cylindrical portion defining an upper mounting surface substantially normal to the longitudinal axis, the upper mounting surface extending radially beyond the top cylindrical portion, the top cylindrical portion contacting an inner diameter of a first disk when the motor hub is in use in a first configuration; anda bottom cylindrical portion proximate the middle cylindrical portion, the bottom cylindrical portion defining a lower mounting surface substantially normal to the longitudinal axis, the lower mounting surface extending radially beyond the middle cylindrical portion, the middle cylindrical portion contacting an inner diameter of a second disk when the motor hub is in use in a second configuration. 2. The motor hub of claim 1, wherein the middle cylindrical portion extends longitudinally relative to the lower mounting surface, and the top cylindrical portion extends longitudinally relative to the upper mounting surface. 3. The motor hub of claim 1, wherein a height of the middle cylindrical portion measured along the longitudinal axis is greater than or equal to 0.5 mm. 4. The motor hub of claim 1, wherein a diameter of the top cylindrical portion is greater than or equal to approximately 20 mm. 5. The motor hub of claim 1, wherein the inner diameter of the second disk is greater than the inner diameter of the first disk. 6. A disk drive including the motor hub of claim 1, wherein the disk drive includes the first disk and wherein the first disk is physically contacting and supported by the upper mounting surface; andwherein the disk drive further includes a head operable to write to and read from the first disk. 7. A disk drive including the motor hub of claim 1, wherein the disk drive includes the second disk and wherein the second disk is physically contacting and supported by the lower mounting surface; andwherein the disk drive further includes a head operable to write to and read from the second disk. 8. The disk drive of claim 7, further comprising a stepped disk spacer in contact with the motor hub, the stepped disk spacer including a step having a step diameter that is substantially less than a greatest outer diameter of the stepped disk spacer, and wherein the inner diameter of the second disk abuts the step of the stepped disk spacer. 9. The disk drive of claim 8, wherein the step diameter is approximately equal to that of the middle cylindrical portion of the motor hub. 10. A motor hub comprising a stepped cylindrical hub defining a longitudinal axis, the stepped cylindrical hub including: a first step extending radially to define an upper mounting surface substantially normal to the longitudinal axis, the upper mounting surface constructed to contact a first disk having a first inner diameter; anda second step extending radially beyond the first step to define a lower mounting surface substantially normal to the longitudinal axis, the lower mounting surface constructed to contact a second disk having a second inner diameter. 11. The motor hub of claim 10, wherein a height of the first step measured along the longitudinal axis is greater than or equal to 0.5 mm. 12. The motor hub of claim 10, wherein the second inner diameter of the second disk is greater than the first inner diameter of the first disk. 13. A disk drive including the motor hub of claim 10, wherein the disk drive includes the first disk and wherein the first disk is physically contacting and supported by the upper mounting surface; andwherein the disk drive further includes a head operable to write to and read from the first disk. 14. A disk drive including the motor hub of claim 10, wherein the disk drive includes the second disk and wherein the second disk is physically contacting and supported by the upper mounting surface; andwherein the disk drive further includes a head operable to write to and read from the second disk. 15. The disk drive of claim 14, further comprising a stepped disk spacer in contact with the motor hub, the stepped disk spacer including a step having a step diameter that is substantially less than a greatest outer diameter of the stepped disk spacer, and wherein the second inner diameter of the second disk abuts the step of the stepped disk spacer. 16. The disk drive of claim 14, further comprising a stepped disk spacer in contact with the motor hub, the stepped disk spacer including two steps, each step having a step diameter that is substantially less than a greatest outer diameter of the stepped disk spacer, and wherein the second inner diameter of the second disk abuts at least one of the two steps. 17. A method of manufacturing a plurality of disk drives, the method comprising: providing a first disk and a first motor hub, the first disk defining a first opening therethrough having a first inner diameter, and the first motor hub defining a first upper mounting surface and a first lower mounting surface;positioning the first disk against the first upper mounting surface of the first motor hub;coupling the first disk to the first motor hub to form a portion of a first disk drive;providing a second disk and a second motor hub, the second disk defining a second opening therethrough having a second inner diameter larger than the first inner diameter, and the second motor hub defining a second upper mounting surface and a second lower mounting surface and having substantially identical dimensions to the first motor hub;positioning the second disk against the second lower mounting surface of the second motor hub; andcoupling the second disk to the second motor hub to form a portion of a second disk drive. 18. The method of claim 17, wherein positioning the first disk against the first upper mounting surface of the first motor hub includes positioning the first disk such that at least a portion of a head gimbal assembly of the first disk drive is dimensioned to fit between the first disk and the first lower mounting surface.
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