Spindle motor for driving a hard disk drive
View Patent ↗The invention relates to a spindle motor, preferably for driving a hard disk drive, having a stationary motor component and a rotatable motor component that is rotatably supported with respect to the stationary motor component and that is driven by an electromagnetic drive system, at least one storage disk being fixed to the rotatable motor component using some means of mounting and fastening. According to the invention, at least parts of the rotatable motor component and at least parts of the means of mounting and fastening have a wear resistant surface coating or are subjected to a wear resistant surface treatment.
1. A spindle motor for driving a hard disk drive having a stationary motor component ( 10 , 32 ; 110 , 132 ) and a rotatable motor component ( 12 , 34 ; 112 ; 134 ) that is rotatably supported with respect to the stationary motor component and that is driven by an electromagnetic drive system ( 36 , 38 ; 136 , 138 ), at least one storage disk ( 40 , 140 ) being fixed to the rotatable motor component using means of mounting and fastening ( 42 , 44 ; 142 , 144 ), wherein at least parts ( 34 ; 134 ) of the rotatable motor component and at least parts of the means of mounting and fastening ( 42 , 44 ; 142 , 144 ) have a wear resistant surface coating ( 34 a , 42 a , 44 a ; 134 a , 142 a , 144 a ) or are subjected to a wear resistant surface treatment.
2. A spindle motor according to claim 1 , wherein the rotatable motor component comprises a hub ( 34 ; 134 ).
3. A spindle motor according to claim 1 , wherein the means of mounting and fastening comprise spacers ( 42 ; 142 ) and retaining clamps ( 44 ; 144 ).
4. A spindle motor according to claim 1 , wherein at least parts ( 32 ; 132 ) of the stationary motor component have a wear resistant surface coating ( 32 a ; 132 a ) or are subjected to a wear resistant surface treatment.
5. A spindle motor according to claim 1 , wherein the stationary motor component comprises a baseplate ( 32 ; 132 ).
6. A spindle motor according to claim 1 , wherein the wear resistant surface coating is a DLC coating.
7. A spindle motor according to claim 1 , wherein the wear resistant surface coating is a nickel coating.
8. A spindle motor according to claim 1 , wherein the wear resistant surface coating is a protective varnish.
9. A spindle motor according to claim 1 , wherein the wear resistant surface treatment is a surface hardening.
10. A spindle motor according to claim 1 , wherein the wear resistant surface treatment additionally comprises a mechanical, chemical or plasma treatment.
11. A hard disk drive, driven by a spindle motor having a stationary motor component ( 10 , 32 ; 110 , 132 ) and a rotatable motor component ( 12 , 34 ; 112 ; 134 ) that is rotatably supported with respect to the stationary motor component and that is driven by an electromagnetic drive system ( 36 , 38 ; 136 , 138 ), at least one storage disk ( 40 , 140 ) being fixed to the rotatable motor component using some means of mounting and fastening ( 42 , 44 ; 142 , 144 ) and a read/write device for reading and writing data from and to the storage disk ( 40 ; 140 ), wherein at least parts ( 34 ; 134 ) of the rotatable motor component and at least parts of the means of mounting and fastening ( 42 , 44 ; 142 , 144 ) have a wear resistant surface coating ( 34 a , 42 a , 44 a ; 134 a , 142 a , 144 a ) or are subjected to a wear resistant surface treatment.
12. A hard disk drive according to claim 11 , wherein the rotatable motor component comprises a hub ( 34 ; 134 ).
13. A hard disk drive according to claim 11 , wherein the means of mounting and fastening comprise spacers ( 42 ; 142 ) and retaining clamps ( 44 ; 144 ).
14. A hard disk drive according to claim 11 , wherein at least parts ( 32 ; 132 ) of the stationary motor component have a wear resistant surface coating ( 32 a ; 132 a ) or are subjected to a wear resistant surface treatment.
15. A hard disk drive according to claim 11 , wherein the stationary motor component comprises a baseplate ( 32 ; 132 ).
16. A hard disk drive according to claim 11 , wherein the wear resistant surface coating is a DLC coating.
17. A hard disk drive according to claim 11 , wherein the wear resistant surface coating is a nickel coating.
18. A hard disk drive according to claim 11 , wherein the wear resistant surface coating is a protective varnish.
19. A hard disk drive according to claim 11 , wherein the wear resistant surface treatment comprises surface hardening.
20. A hard disk drive according to claim 11 , wherein the wear resistant surface treatment additionally comprises a mechanical, chemical or plasma treatment.