Base dam in a data storage system to reduce or eliminate motor leakage
View Patent ↗A base for a data storage system is provided having an inner facing surface and an outer facing surface. The base includes a motor well. Formed with inner surface of facing surface of the base includes a medium region, an actuator region and a dam. The medium region is defined by a medium region planar surface surrounding a portion of the motor well, a leading surface and a trailing surface. The actuator region is defined by an actuator region planar surface that is recessed from the medium region planar surface, the leading surface, the trailing surface and a remaining portion of the motor well. The dam has a dam planar surface that surrounds the remaining portion of the motor well and is positioned on the actuator region planar surface between the leading surface and the trailing surface.
1. A base for a data storage system having an inner facing surface and an outer facing surface, the base comprising:
a motor well including a perimeter;
a medium region formed with the inner facing surface of the base, the medium region including a medium region planar surface defined at least by a portion of the perimeter of the motor well, a leading surface and a trailing surface, wherein the leading and trailing surfaces intersect the perimeter of the motor well;
an actuator region formed with the inner surface of the base, the actuator region including an actuator region planar surface that is recessed from the medium region planar surface and defined at least by the leading surface, the trailing surface and a remaining portion of the perimeter of the motor well; and
a dam formed with the inner facing surface and protruding from the actuator region planar surface to a dam planar surface and extending along the remaining portion of the perimeter of the motor well from the leading surface to the trailing surface.
2. The base of claim 1 , wherein the dam extends from the actuator region planar surface towards the medium region planar surface.
3. The base of claim 1 , wherein the motor well, the medium region, the actuator region and the dam are integrally formed with the inner facing surface of the base.
4. The base of claim 1 , wherein the dam comprises a dam height defined between the actuator region planar surface and the dam planar surface.
5. The base of claim 4 , wherein the dam height is at least as great as a distance between the actuator region planar surface and the medium region planar surface.
6. The base of claim 4 , wherein the dam height is less than the distance between the actuator region planar surface and the medium region planar surface.
7. The base of claim 1 , further including a motor well channel comprising:
a motor well channel planar surface recessed into the medium region planar surface and bounded by the portion of the perimeter of the motor well that extends from the leading surface to the trailing surface and defines the medium region planar surface; and
a motor well channel wall positioned outwardly from the perimeter of the motor well, the motor well channel wall bounded at least by the leading surface, the trailing surface and the medium region planar surface.
8. The base of claim 7 , wherein the motor well channel comprises a motor well channel height defined between the outer facing surface and the motor well channel planar surface.
9. The base of claim 8 , wherein the motor well channel height is less than the distance between the actuator region planar surface and the medium region planar surface.
10. The base of claim 8 , wherein the motor well channel planar surface is in plane and continuous with the dam planar surface.
11. A base for a data storage system, comprising:
an outer facing surface;
an inner facing surface;
wherein the inner facing surface includes integrally formed features comprising:
a circular motor well for accommodating a motor assembly, the motor well having a perimeter that includes a first angular circumferential portion and a second angular circumferential portion;
a medium region for accommodating a medium, the medium region including a medium region planar surface bounded at least by the first angular circumferential portion of the perimeter of the motor well, a leading surface and a trailing surface, wherein the leading and trailing surfaces intersect the perimeter of the motor well;
an actuator region for accommodating an actuator, the actuator region including an actuator region planar surface that is recessed from the medium region planar surface and bounded at least by the leading surface, the trailing surface and the second angular circumferential portion of the perimeter of the motor well; and
a dam extending from the actuator region planar surface to a dam planar surface and the dam extending along the second angular circumferential portion of the motor well from the leading surface to the trailing surface.
12. The base of claim 11 , wherein the dam comprises a dam height defined between the actuator region planar surface and the dam planar surface.
13. The base of claim 12 , wherein the dam height is at least as great as a distance between the actuator region planar surface and the medium region planar surface.
14. The base of claim 12 , wherein the dam height is less than the distance between the actuator region planar surface and the medium region planar surface.
15. The base of claim 11 , further including a motor well channel comprising a motor well channel planar surface recessed into the medium region planar surface and bounded by the first angular circumferential portion of the perimeter of the motor well; and
a motor well channel wall positioned outwardly from the first angular circumferential portion perimeter of the motor well, the motor well channel wall bounded at least by the leading surface, the trailing surface and the medium region planar surface.
16. The base of claim 15 , wherein the motor well channel comprises a motor well channel height defined between the outer facing surface and the motor well channel planar surface.
17. The base of claim 16 , wherein the motor well channel height is less than the distance between the actuator region planar surface and the medium region planar surface.
18. The base of claim 16 , wherein the motor well channel planar surface is in plane and continuous to the dam planar surface.
19. A base for a data storage system having an inner facing surface and an outer facing surface, the base comprising:
a motor well having a perimeter including a first angular circumferential portion and a second angular circumferential portion;
a medium region formed with the inner facing surface of the base, the medium region including a medium region planar surface that terminates along the first angular circumferential portion of the motor well, along a leading surface and along a trailing surface, wherein the leading and trailing surfaces intersect with the perimeter of the motor well;
an actuator region formed with the inner surface of the base, the actuator region including an actuator region planar surface that is recessed from the medium region planar surface and terminates along the leading surface, the trailing surface and the second angular circumferential portion of the motor well; and
dam means formed with the inner facing surface of the base, the dam means extending from the actuator region planar surface to a dam planar surface and extending along the second angular circumferential portion of the motor well for reducing chemical leakage from the motor well into the data storage system.
20. The base of claim 19 , further comprising:
channel means for further reducing leakage of chemical from the motor well into the data storage system.