Apparatus and method for damping disk drive vibration

• US 5,914,855 A
• Filed: 12/30/1997
• Issued: 06/22/1999
• Est. Priority Date: 12/30/1997
• Status: Expired due to Term

• Current Assignee: Western Digital Technologies Incorporated (Western Digital Corporation)
• Original Assignee: International Business Machines Corporation
• Inventors: Lovvorn, Barry, Vinton, Chris, Gustafson, Gary
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): PATEL, JAGDISH C
• Application Number:
  US08/999,162
• Time in Patent Office: 539 Days
• Field of Search: 361/685, 361/732, 361/740, 361/741, 361/742, 361/752, 361/756, 361/758, 361/804, 248/638, 248/634, 248/560, 248/562, 439/382, 439/383, 439/260, 439/377
• US Class Current: 361/679.34
• CPC Class Codes: G11B 33/08 Insulation or absorption of undesired vibrations or sounds

Abstract

The present disclosure relates to a disk drive assembly including a printed circuit board having a front end opposite a back end, and opposite side edge portions extending between the front and back ends. A disk drive is electrically and mechanically connected to printed circuit board. Clips for damping vibration are mounted on each opposite side edge portion of the printed circuit board. Damping is also achieved via elastomeric layers positioned between the clips and the printed circuit board.

Claims

1. A disk drive mounting configuration comprising:

a cage including opposing walls defining opposing card slots;

a card having a front end opposite a back end, the card also including opposite side edge portions extending between the front and back ends, the side edge portions being secured within the opposing card slots of the cage;

a disk drive mounted on the card;

at least one clip mounted on each opposite side edge portion of the card, the clips being compressed within the card slots of the cage; and

elastomeric layers positioned between the clips and the card, wherein the elastomeric layers cooperate with the clips to damp vibration transferred between the card and the cage.

2. The mounting configuration of claim 1, wherein the elastomeric layers are formed by resilient adhesive that secures the clips to the card.

3. The mounting configuration of claim 2, wherein the resilient adhesive is an acrylic adhesive.

4. The mounting configuration of claim 1, wherein the clips are made of a material having elastic characteristics.

5. The mounting configuration of claim 4, wherein the clips are made of beryllium copper.

6. The mounting configuration of claim 1, wherein the clips have generally U-shaped cross-sections and are arranged and configured to straddle the opposite side edge portions of the card.

7. The mounting configuration of claim 1, wherein each clip has first and second spaced-apart legs interconnected by a bridge portion, wherein the clips straddle the opposite side edge portions of the card, and wherein the elastomeric layers are positioned between the first legs and the card, between the second legs and the card, and between the bridge portions and the card.

8. The mounting configuration of claim 1, wherein the back end of the card includes input/output means for providing and electrical connection with a connector located at a back plane of the cage.

9. The mounting configuration of claim 8, wherein the clips are positioned adjacent to the front end of the card.

10. A disk drive assembly comprising:

a printed circuit board having a front end opposite a back end, the printed circuit board also including opposite side edge portions extending between the front and back ends;

a disk drive electrically and mechanically connected to the printed circuit board;

at least one clip mounted on each opposite side edge portion of the printed circuit board; and

elastomeric layers positioned between the clips and the printed circuit board.

11. The mounting configuration of claim 10, wherein the elastomeric layers are formed by resilient adhesive that secures the clips to the printed circuit board.

12. The mounting configuration of claim 11, wherein the resilient adhesive is an acrylic adhesive.

13. The mounting configuration of claim 10, wherein the clips are made of a material having elastic characteristics.

14. The mounting configuration of claim 13, wherein the clips are made of beryllium copper.

15. The mounting configuration of claim 10, wherein the clips have generally U-shaped cross-sections and are arranged and configured to straddle the opposite side edge portions of the printed circuit board.

16. The mounting configuration of claim 10, wherein each clip has first and second spaced-apart legs interconnected by a bridge portion, wherein the clips straddle the opposite side edge portions of the printed circuit board, and wherein the elastomeric layers are positioned between the first legs and the printed circuit board, between the second legs and the printed circuit board, and between the bridge portions and the printed circuit board.

17. The mounting configuration of claim 10, wherein the back end of the printed circuit board includes an input/output connector.

18. The mounting configuration of claim 17, wherein the clips are positioned adjacent to the front end of the printed circuit board.

19. A method for damping vibration in a disk drive system, the disk drive system including a cage defining opposing card slots, the disk drive system also including a disk drive mounted on a card adapted to be inserted in the card slots of the cage, the method comprising the steps of:

placing layers of elastomeric non-hardening adhesive on the card adjacent opposite side edge portions of the card;

securing clips to the opposite side edge portions of the card via the non-hardening adhesive, the non-hardening adhesive being positioned between the clips and the card; and

inserting the opposite side edge portions of the card within the card slots of the cage such that the clips and non-hardening adhesive are compressed and deformed within the slots, wherein the clips and non-hardening adhesive cooperate to damp vibration transferred between the card and the cage.

20. The method of claim 19, wherein the non-hardening adhesive is an acrylic adhesive.

21. The method of claim 19, wherein the clips are made of beryllium copper.

22. The method of claim 19, wherein each clip has first and second spaced-apart legs interconnected by a bridge portion, wherein the clips straddle the opposite side edge portions of the card, and wherein the non-hardening adhesive is positioned between the first legs and the card, between the second legs and the card, and between the bridge portions and the card.