公开(公告)号：JPH06259953A

公开(公告)日：1994-09-16

申请号：JP185894

申请日：1994-01-13

Applicant: IBM

Inventor： BECK JOHN LOWELL ,  BOIGENZAHN JEFFREY FRED ,  BRATVOLD DARRELL EUGENE ,  BROWN CHARLES A ,  COSSETTE LUKE ANTONIO ,  STUCKY DANIEL CRAIG ,  GOOD MICHAEL SCOTT ,  GOODMAN DALE E ,  LAGERGREN RICHARD EDWARD ,  LYONS GREGORY ALLEN ,  RIGOTTI JAMES MICHAEL ,  RAPPEL BRIAN LEE ,  GOEKE DALE C ,  TUFTY LYLE RICH ,  WENDT HERMAN RUSSELL

IPC: G11B21/02 ,  G06F12/02 ,  G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  G11B33/14

Abstract: PURPOSE: To obtain a disk drive enclosure structure where a special form whose draft is zero is used in a die casting process. CONSTITUTION: A data storage disk drive 10 includes a spindle, which supports plural disks on the surface of a magnetic disk which are rotated around a common shaft and form a spindle assembly 18, and a rotary actuator which supports plural magnetic transducers on the surface of each disk. The disk drive includes a die cast disk drive enclosure structure 12 including the surface to which a spindle motor shaft and an actuator bearing shaft are set and where a predeterminate draft is zero. The enclosure structure includes a base cast member 14, which holds an electric connector arranged on the outside, and a cover cast member 16. The disk drive includes an electric passage from a flexible circuit to a comb-shaped part of the actuator. The disk drive includes a tubular chemical air filter arranged in a groove for diffusion integrated with the cover as one body.

公开(公告)号：GB2285533A

公开(公告)日：1995-07-12

申请号：GB9500060

申请日：1995-01-04

Applicant: IBM

Inventor： BOUTAGHOU ZINE-EDDINE ,  COSSETTE LUKE ANTONIO ,  LUOMA RICHARD W

IPC: G11B19/20 ,  F16J15/43 ,  G11B25/04 ,  G11B33/14

Abstract: A magnetic fluid seal is provided by mounting an annular, axially polarized magnet 35 mounted on the device base member 10 and an annular ring pole piece 36 with an inner diameter that cooperates with an outer diameter surface of the hub assembly 13 to form a fluid gap that is radially outward and within the axial extent of the spindle bearings 15, 17. The secondary gap 44 of the seal assembly is within the bearing assembly sealed volume while the principal sealing gap is within the hub assembly to confine any debris or aerosols resulting from high rotational velocity or shock to be contained in proximity to the flux fields that can recapture any magnetic material. The assembly also inherently presents an effective conductive path to provide enhanced grounding of the rotating assembly through the magnetic fluid in the second gap which is not subject to impairment caused by bonding materials. The seal assembly design also provides for self loading of the magnetic fluid without permitting escape of smeared liquid beyond the region of the seal assembly.

公开(公告)号：SG46483A1

公开(公告)日：1998-02-20

申请号：SG1996005009

申请日：1994-02-28

Applicant: IBM

Inventor： BECK JOHN LOWELL ,  BOIGENZAHN JEFFREY FRED ,  BRATVOLD DARRELL EUGENE ,  BROWN CHARLES A ,  COSSETTE LUKE ANTONIO ,  GOEKE DALE CLARK ,  GOOD MICHAEL SCOTT ,  GOODMAN DALE E ,  LAGERGREEN RICHARD EDWARD ,  LYONS GREGORY ALLEN ,  RIGOTTI JAMES MICHAEL ,  RAPPEL BRIAN LEE ,  STUCKY DANIEL CRAIG ,  TUFTY LYLE RICK ,  WENDT HERMAN RUSSELL

IPC: G06F12/02 ,  G11B21/02 ,  G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  G11B33/14

Abstract: A data storage disk drive is provided with a spindle which supports a plurality of disks having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports magnetic transducers for movement in unison about respective disk surfaces. The disk drive includes a disk drive enclosure having die-cast generated predetermined zero draft geometries for mounting the spindle motor shaft and the actuator bearing shaft. The enclosure includes a base casting and a cover casting, each casting including structure for locating and retaining electrical connectors used for connecting to a planar electronics card located outside the drive enclosure. The disk drive includes an effective and easily manufacturable electrical path from a flex circuit to an actuator comb. The disk drive includes a tubular chemical breather filter arranged with integral housing and diffusion channels formed in the cover casting.

公开(公告)号：GB2275811B

公开(公告)日：1997-01-22

申请号：GB9403779

申请日：1994-02-28

Applicant: IBM

Inventor： BECK JOHN LOWELL ,  BOIGENZAHN JEFFREY FRED ,  BRATVOLD DARRELL EUGENE ,  BROWN CHARLES A ,  COSSETTE LUKE ANTONIO ,  GOEKE DALE CLARK ,  GOOD MICHAEL SCOTT ,  GOODMAN DALE E ,  LAGERGREN RICHARD EDWARD ,  LYONS GREGORY ALLEN ,  RIGOTTI JAMES MICHAEL ,  RAPPEL BRIAN LEE ,  STUCKY DANIEL CRAIG ,  TUFTY LYLE RICK ,  WENDT HERMAN RUSSELL

IPC: G06F12/02 ,  G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  G11B33/14 ,  G11B21/02 ,  B03C3/00 ,  G11B33/00

Abstract: A data storage disk drive is provided with a spindle which supports a plurality of disks having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports magnetic transducers for movement in unison about respective disk surfaces. The disk drive includes a disk drive enclosure having die-cast generated predetermined zero draft geometries for mounting the spindle motor shaft and the actuator bearing shaft. The enclosure includes a base casting and a cover casting, each casting including structure for locating and retaining electrical connectors used for connecting to a planar electronics card located outside the drive enclosure. The disk drive includes an effective and easily manufacturable electrical path from a flex circuit to an actuator comb. The disk drive includes a tubular chemical breather filter arranged with integral housing and diffusion channels formed in the cover casting.

公开(公告)号：GB2275811A

公开(公告)日：1994-09-07

申请号：GB9403779

申请日：1994-02-28

Applicant: IBM

Inventor： BECK JOHN LOWELL ,  BOIGENZAHN JEFFREY FRED ,  BRATVOLD DARRELL EUGENE ,  BROWN CHARLES A ,  COSSETTE LUKE ANTONIO ,  GOEKE DALE CLARK ,  GOOD MICHAEL SCOTT ,  GOODMAN DALE E ,  LAGERGREN RICHARD EDWARD ,  LYONS GREGORY ALLEN ,  RIGOTTI JAMES MICHAEL ,  RAPPEL BRIAN LEE ,  STUCKY DANIEL CRAIG ,  TUFTY LYLE RICK ,  WENDT HERMAN RUSSELL

IPC: G06F12/02 ,  G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  G11B33/14 ,  G11B21/02 ,  B03C3/00 ,  G11B33/00

Abstract: A data storage disk drive is provided with a spindle 42 which supports a plurality of disks 110 for rotation about a common axis, and a rotary actuator 20 which supports magnetic transducers for movement in unison across respective disk surfaces. The disk drive includes a disk drive enclosure having die-cast generated predetermined zero draft registration surfaces 30 - 40 for mounting the spindle motor shaft 42 and the actuator bearing shaft 44 and possibly magnet assemblies 46, 48. The enclosure includes a base casting 14 and a cover casting 16, each casting including structure (figs. 7 - 9) for locating and retaining electrical connectors used for connecting to a planar electronics card (90) located outside the drive enclosure. The disk drive includes an effective and easily manufacturable electrical path from a flex circuit to an actuator comb (figs. 11 - 13). The disk drive also includes a tubular, at least partly electrostatic, chemical breather filter (56) arranged with integral housing and diffusion channels (58) formed in the cover casting (figs. 14 - 24).