Disk drive having a vibration absorber with fixed free ends
View Patent ↗A disk drive includes a disk drive base, a disk, an actuator arm actuatable over the disk, and a motor. The motor is operable to rotate the disk, and is coupled to the disk drive base. During operation of the disk drive, the motor emits vibrations at a source vibration frequency. A vibration absorber is coupled to the disk drive base, the vibration absorber including a cantilever beam having a fixed end and a free end.
1. A disk drive comprising:
a disk drive base;
a disk;
an actuator arm actuatable over the disk;
a motor coupled to the disk drive base and rotating the disk at a rotation frequency during operation of the disk drive; and
a vibration absorber coupled to the disk drive base, the vibration absorber including:
a cantilever beam having a fixed end and a free end; and
a mass coupled to the free end of the cantilever beam;
wherein the cantilever beam and the mass together have a resonant frequency within 10% of the rotation frequency.
2. The disk drive of claim 1 , wherein the cantilever beam extends generally parallel to a plane of the disk.
3. The disk drive of claim 1 , wherein the resonant frequency is within 2% of the rotation frequency.
4. The disk drive of claim 1 , wherein the vibration absorber is coupled to the disk drive base in a region of the disk drive base farthest from the motor.
5. The disk drive of claim 4 , wherein the vibration absorber is coupled proximate a corner of the disk drive base farthest from the motor.
6. The disk drive of claim 1 , wherein the cantilever beam comprises an elongate aluminum arm.
7. The disk drive of claim 1 , wherein the mass is at least 5% of a total weight of the disk drive.
8. The disk drive of claim 1 , wherein the mass is riveted to the cantilever beam.
9. The disk drive of claim 1 , wherein the vibration absorber further includes a base to which the cantilever beam is coupled, the base including orientation tabs configured to engage a component of the disk drive.
10. The disk drive of claim 9 , wherein the cantilever beam and the base are monolithic.
11. The disk drive of claim 1 , wherein the cantilever beam is coupled to the disk drive base at the fixed end of the cantilever beam.
12. A disk drive comprising:
a disk drive base;
a disk;
an actuator arm actuatable over the disk;
a motor coupled to the disk drive base and rotating the disk at a rotation frequency during operation of the disk drive; and
a cantilever beam coupled to the disk drive base, the cantilever beam having a fixed end and a free end, and having a resonant frequency within 10% of the rotation frequency.
13. The disk drive of claim 12 , wherein the cantilever beam has a resonant frequency within 2% of the rotation frequency.
14. The disk drive of claim 12 , wherein the cantilever beam is coupled to the disk drive base in a region of the disk drive base farthest from the motor.
15. The disk drive of claim 14 , wherein the cantilever beam is coupled proximate a corner of the disk drive base farthest from the motor.
16. The disk drive of claim 12 , wherein the cantilever beam comprises an elongate aluminum arm.
17. The disk drive of claim 12 , wherein the cantilever beam is coupled to a base, the base including orientation tabs configured to engage a component of the disk drive.
18. The disk drive of claim 17 , wherein the cantilever beam and the base are monolithic.
19. The disk drive of claim 12 , wherein the cantilever beam is coupled to the disk drive base at the fixed end of the cantilever beam.