Browse Prior Art Database

Low-Cost Structural Enclosure for Small Disk Files

IP.com Disclosure Number: IPCOM000037838D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-30
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Neubauer, JL: AUTHOR [+2]

Abstract

Disclosed is a low-cost, three-piece assembly designed to function as the supporting structure for the major subassemblies constituting a typical small hard disk drive and to function as the enclosure requiring no seals or gaskets.

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Low-Cost Structural Enclosure for Small Disk Files

Disclosed is a low-cost, three-piece assembly designed to function as the supporting structure for the major subassemblies constituting a typical small hard disk drive and to function as the enclosure requiring no seals or gaskets.

Fig. 1 shows the three-piece structure consisting of two flat plates and an intermediate housing. Both top and bottom plates 12,10 are intended to be stamped from sheet stock by fine blanking. The housing 14 is intended to be diced from an extruded section.

Fig. 2 shows the relationship between the major subassemblies of a disk drive, spindle assembly 2, comb assembly 4, magnet assembly 6, and filter assembly 8 to the structural members. Shafts extending from the spindle assembly 2 and the comb assembly 4 press fit into holes provided in the base plate 10 and loosely fit into corresponding holes provided in the top plate 12. If the top ends of these two shafts are adequately supported by tooling, the file can be servo-written and tested at this level of assembly prior to fitting the housing 14 and top cover 12 in place.

Final steps in the assembly procedure are to bond the housing 14 to the base plate 10, bond the top plate 12 to the housing 14, and bond the top ends of the spindle and comb shafts 2,4 to the top plate 12. Screws or pins may be used to secure the enclosure until the bonding material sets. This bonded-together assembly, supporting both ends of the spindle and comb shafts...