Vibration-damping mount

• US 8,213,174 B1
• Filed: 01/08/2010
• Issued: 07/03/2012
• Est. Priority Date: 01/08/2010
• Status: Expired due to Fees

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: Kapahi, Reetesh, Ananthanarashima, Nagaraj, Jain, Kapil
• Primary Examiner(s): Edwards, Anthony Q
• Application Number:
  US12/684,707
• Time in Patent Office: 907 Days
• Field of Search: 361/679.34, 369/75.11
• US Class Current: 361/679.36
• CPC Class Codes: F16F 1/371 characterised by inserts or auxiliary extension or exterior elements, e.g. for rigidification F16F1/387 takes precedence; non-embedded reinforcing elements for flexibly-walled air springs F16F9/0436
• CPC Class Codes: F16F 15/08 with rubber springs grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38; with springs made of rubber and metal arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604
• CPC Class Codes: G06F 1/183 Internal mounting support structures, e.g. for printed circuit boards, internal connecting means for buses G06F13/409
• CPC Class Codes: G06F 1/187 Mounting of fixed and removable disk drives

Abstract

In an example, a vibration-damping mount comprises a bolt including a threaded shaft and a bolt head fixed to the threaded shaft, and a vibration-damping base. The vibration-damping base includes a head segment that envelops the bolt head and a neck segment adjacent to the head segment and opposite to the threaded shaft. The vibration-damping base further includes a rear segment adjacent to the neck segment and opposite to the head segment. The head segment, the neck segment and the rear segment combine to form a notch configured to mate with a hole in a mounting board, such as a printed circuit board. The vibration-damping mount may be suitable to mount a mass data storage device such as a hard disk drive to a printed circuit board in a chassis system and simultaneously isolate the mass data storage device from vibrations in the chassis system.

Claims

1. A vibration-damping mount comprising:

a bolt including a threaded shaft and a bolt head fixed to the threaded shaft; and

a vibration-damping base including;

a head segment that envelops the bolt head,

a neck segment adjacent to the head segment and opposite to the threaded shaft, wherein the neck segment has a cross-sectional thickness smaller than a cross-sectional thickness of the head segment, and

a rear segment adjacent to the neck segment and opposite to the head segment, wherein the rear segment has a cross-sectional thickness larger than the cross-sectional thickness of the neck segment,

wherein the head segment, the neck segment and the rear segment combine to form a notch configured to mate with a hole in a mounting board such that at least a portion of the neck segment is within the hole and the head segment and the rear segment are on either side of the mounting board.

2. The vibration-damping mount of claim 1, wherein the cross-sectional thickness of the rear segment tapers from the notch such that the rear segment is thicker adjacent the notch than from an end of the rear segment opposite the notch.

3. The vibration-damping mount of claim 1, wherein the vibration-damping base further includes a tail segment adjacent to the rear segment and opposite to the neck segment, wherein the tail segment has a cross-sectional thickness smaller than the cross-sectional thickness of the head segment.

4. The vibration-damping mount of claim 3, wherein the cross-sectional thickness of the rear segment tapers from the notch to the tail segment such that the rear segment is thicker adjacent the notch than adjacent the tail segment.

5. The vibration-damping mount of claim 3, wherein the cross-sectional thickness of the tail segment is between 1 and 0.5 times the diameter of the hole in the mounting board.

6. The vibration-damping mount of claim 1, wherein the bolt is a metal bolt, and wherein the vibration-damping base is an overmold on the metal bolt.

7. The vibration-damping mount of claim 1, wherein the bolt head is one of a group consisting of:

a screw head;

a hex head;

a Phillips head;

a flat head;

a thumb-screw head; and

a textured sphere.

8. The vibration-damping mount of claim 1, wherein no portion of the bolt extends into the hole in the mounting board when the notch mates with the hole in the mounting board.

9. The vibration-damping mount of claim 1, wherein the notch in an annular notch.

10. An assembly comprising:

a mass data storage device including;

a rewriteable memory, and

a housing encasing the rewriteable memory; and

a set of vibration-damping mounts mounted to an external surface of the housing, wherein each of the vibration-damping mounts includes;

a shaft mounted to the external surface of the housing, the shaft including a shaft head opposite the housing, and

a vibration-damping base including;

a head segment that envelops the shaft head,

a neck segment adjacent to the head segment and opposite to the shaft, wherein the neck segment has a cross-sectional thickness smaller than a cross-sectional thickness of the head segment, and

a rear segment adjacent to the neck segment and opposite to the head segment, wherein the rear segment has a cross-sectional thickness larger than the cross-sectional thickness of the neck segment,

wherein the head segment, the neck segment and the rear segment combine to form a notch configured to mate with a hole in a mounting board such that at least a portion of the neck segment is within the hole and the head segment and the rear segment are on either side of the mounting board.

11. The assembly of claim 10, wherein the shafts each include a threaded shaft threaded into screw holes within housing to mount the vibration-damping mounts to the external surface of the housing.

12. The assembly of claim 10, wherein the set of vibration-damping mounts includes at least three vibration-damping mounts, wherein each of the three vibration-damping mounts extends from the housing in a common direction.

13. The assembly of claim 10, further comprising a printed circuit board forming a set of mounting holes and configured as the mounting board, wherein each of the set of vibration-damping mounts are mated with one of the set of mounting holes.

14. The assembly of claim 13, wherein, for each of the vibration-damping mounts, no portion of the shaft extends into the corresponding mounting hole in the printed circuit board.

15. The assembly of claim 10, wherein, for each of the vibration-damping mounts, the cross-sectional thickness of the rear segment tapers from the notch such that the rear segment is thicker adjacent the notch than from an end of the rear segment opposite the notch.

16. The assembly of claim 10, wherein, for each of the vibration-damping mounts, the shaft is a metal screw, and wherein the vibration-damping base is an overmold on the metal screw.

17. The assembly of claim 10, wherein, for each of the vibration-damping mounts, the notch is an annular notch.

18. The assembly of claim 10, wherein the mass data storage device is a hard disk drive (HDD).

19. An assembly comprising:

a chassis;

one or more cooling fans mounted to the chassis;

a printed circuit board mounted within the chassis, wherein the printed circuit board forms a set of mounting holes;

a mass data storage device including;

a rewriteable memory, and

a housing encasing the rewriteable memory; and

a set of vibration-damping mounts mounted to an external surface of the housing of the mass data storage device, wherein each of the vibration-damping mounts includes;

a shaft mounted to the external surface of the housing, the shaft including a shaft head opposite the housing; and

a vibration-damping base including;

a head segment that envelops the shaft head,

a neck segment adjacent to the head segment and opposite to the shaft, wherein the neck segment has a cross-sectional thickness smaller than a cross-sectional thickness of the head segment, and

a rear segment adjacent to the neck segment and opposite to the head segment, wherein the rear segment has a cross-sectional thickness larger than the cross-sectional thickness of the neck segment,

wherein the head segment, the neck segment and the rear segment combine to form a notch mated with a corresponding mounting hole in the printed circuit board such that at least a portion of the neck segment is within the corresponding mounting hole and the head segment and the rear segment are on either side of the printed circuit board.

20. The assembly of claim 19, further comprising a power supply mounted within the chassis, wherein the power supply includes at least one of the cooling fans.

21. The assembly of claim 19, wherein the shafts each include a threaded shaft threaded into screw holes within housing to mount the vibration-damping mounts to the external surface of the housing of the mass data storage device.

22. The assembly of claim 19, wherein the set of vibration-damping mounts includes at least three vibration-damping mounts, wherein each of the three vibration-damping mounts extends from the housing of the mass data storage device in a common direction in order to mate with the set of mounting holes in the printed circuit board.

23. The assembly of claim 19, wherein, for each of the vibration-damping mounts, no portion of the shaft extends into the corresponding mounting hole in the printed circuit board.

24. The assembly of claim 19, wherein, for each of the vibration-damping mounts, the cross-sectional thickness of the rear segment tapers from the notch such that the rear segment is thicker adjacent the notch than from an end of the rear segment opposite the notch.

25. The assembly of claim 19, wherein, for each of the vibration-damping mounts, the shaft is a metal screw, and wherein the vibration-damping base is an overmold on the metal screw.

26. The assembly of claim 19, wherein, for each of the vibration-damping mounts, the notch in an annular notch.

27. A method of mounting a mass storage device comprising:

attaching a set of vibration-damping mounts to an external surface of a housing of the mass data storage device such that each of the vibration-damping mounts extends in a common direction, wherein each of the vibration-damping mounts includes;

a shaft mounted to the external surface of the housing, the shaft including a shaft head opposite the housing, and

a vibration-damping base including;

a head segment that envelops the shaft head;

a neck segment adjacent to the head segment and opposite to the shaft, wherein the neck segment has a cross-sectional thickness smaller than a cross-sectional thickness of the head segment; and

a rear segment adjacent to the neck segment and opposite to the head segment, wherein the rear segment has a cross-sectional thickness larger than the cross-sectional thickness of the neck segment,

wherein the head segment, the neck segment and the rear segment combine to form a notch configured to mate with a hole in a mounting board; and

for each of the vibration-damping mounts, forcing the rear segment through a corresponding hole in a set of holes in the mounting board such that at least a portion of the neck segment is within the corresponding hole and the head segment and the rear segment are on either side of the mounting board.

28. The method of claim 27, wherein each of the vibration-damping mounts includes a tail segment adjacent to the rear segment and opposite to the neck segment, wherein the tail segment has a cross-sectional thickness smaller than the cross-sectional thickness of the head segment, wherein the method further comprises positioning each tail segment within the corresponding hole in the mounting board and pulling on the tail segment to pull the rear segment through a corresponding hole.

29. The method of claim 28, wherein the cross-sectional thickness of the rear segment tapers from the notch to the tail segment such that the rear segment is thicker adjacent the notch than adjacent the tail segment.

30. The method of claim 27,

wherein the shafts each include a threaded shaft,

wherein the method further comprises, for each of the vibration-damping mounts, threading the shaft into a screw hole within the housing to mount the vibration-damping mounts to the external surface of the housing of the mass data storage device.

31. The method of claim 27, wherein the set of vibration-damping mounts includes at least three vibration-damping mounts.

32. The method of claim 27, wherein, for each of the vibration-damping mounts, no portion of the shaft extends into the corresponding mounting hole in the mounting board.

33. The method of claim 27, wherein the mass data storage device is a hard disk drive (HDD).