Re-enforced motor hub flange
View Patent ↗A hub for a disk drive assembly including an upper member formed of a first material; and a lower member formed from a second material that supports and reinforces the upper member. The second material has a rigidity greater than the rigidity of the first material. Additionally, a disk drive assembly may be performed by combining a hub, a disk media mounted to the hub and a clamping mechanism attached to the hub and providing a clamping force to the disk media.
1. A hub for a disk drive assembly comprising:
an upper member formed of a first material; and
a lower member comprising a main portion and a support flange extending radially outward from the main portion, wherein the lower member is formed from a second material and is configured to support and reinforce the upper member,
wherein the second material having a rigidity greater than the rigidity of the first material.
2. The hub of claim 1 , wherein the upper member comprises a body portion and a disk supporting flange extending radially outward from the body portion; and
wherein the main portion of the lower member supports the disk supporting portion of the upper member.
3. The hub of claim 2 , wherein the support flange of the lower member extends from main portion of the lower member a length, l 1 , substantially equal to the length of the disk supporting portion of the upper member.
4. The hub of claim 2 , wherein the support flange of the lower member extends from main portion of the lower member a length, l 1 , less than the length of the disk supporting portion of the upper member.
5. The hub of claim 1 , wherein the upper member comprises a body portion; and
wherein the support flange extends radially outward past the body portion of the upper member to form a disk supporting portion.
6. The hub of claim 1 , wherein the first material comprises a non-metallic material.
7. The hub of claim 1 , wherein the first material comprises aluminum.
8. The hub of claim 1 , wherein the second material comprises a ferromagnetic material.
9. The hub of claim 1 , wherein the second comprises metallic material.
10. The hub of claim 1 , wherein the upper member and lower member are bonded to each other via an adhesive.
11. A disk drive assembly comprising:
a hub comprising:
an upper member formed of a first material; and
a lower member formed from a second material configured to support and reinforce the upper member,
wherein the second material having a rigidity greater than the rigidity of the first material;
a disk media configured to be mounted onto the hub; and
a clamping mechanism configured to attach to the hub and provide a clamping force to the disk media.
12. The disk drive assembly of claim 11 , wherein the upper member of the hub comprises a body portion and a disk supporting portion extending radially outward from the body portion; and
wherein the lower member of the hub comprises a main portion and a support flange extending radially outward from the main portion, such that the main portion of the lower member supports the disk supporting portion of the upper member.
13. The disk drive assembly of claim 12 , wherein the support flange of the lower member of the hub extends from main portion of the lower member a length, l 1 , substantially equal to the length of the disk supporting portion of the upper member of the hub.
14. The disk drive assembly of claim 12 , wherein the support flange of the lower member of the hub extends from main portion of the lower member a length, l 1 , less than the length of the disk supporting portion of the upper member of the hub.
15. The disk drive assembly of claim 11 , wherein the upper member of the hub comprises a body portion; and
wherein the lower member of the hub comprises a main portion and a support flange extending radially outward from the main portion, wherein the support flange extends radially outward past the body portion of the upper member to form a disk supporting portion.
16. The disk drive assembly of claim 11 , wherein the first material comprises a non-metallic material.
17. The disk drive assembly of claim 11 , wherein the first material comprises aluminum.
18. The disk drive assembly of claim 11 , wherein the second material comprises a ferromagnetic material.
19. The disk drive assembly of claim 18 , wherein the second material comprises a metallic material.
20. The disk drive assembly of claim 11 , wherein the upper member and lower member are bonded to each other via an adhesive.