Patent application number | Description | Published |
20090316299 | DISK DRIVE DEVICE HAVING AIRTIGHT STRUCTURE WITH IMPROVED AIRTIGHTNESS - A disk drive device is configured such that a wall of a base plate is provided with a through hole that guides a lead from a drive unit outside. The through hole is covered by a sealing sheet having an insertion hole. The lead is guided from inside the housing via the insertion hole of the sealing sheet. The sealing sheet carries a curable resin. The curable resin, temporarily softened during a curing process, flows into a space between the base plate and the through hole and a space between the insertion hole and the lead. The curable resin is cured in this state, ensuring the airtightness of the housing. | 12-24-2009 |
20110002212 | ADHESION STRUCTURE AND METHOD USING ELECTRICALLY CONDUCTIVE ADHESIVE, DISK DRIVE DEVICE USING THE ADHESION STRUCTURE AND METHOD, AND METHOD FOR MANUFACTURING THE DISK DRIVE DEVICE - A base plate containing aluminum as a main component and an electrically conductive counter plate are bonded together through the medium of an electrically conductive adhesive. Even when an oxide film is formed on the surface of the base plate, electrical continuity between the base plate and the counter plate, which are connected together through the medium of the electrically conductive adhesive, is improved by a process of applying a resistance lowering voltage, which reduces the resistance component due to the oxide film by causing a dielectric breakdown. | 01-06-2011 |
20110043948 | DISK DRIVE DEVICE WITH HUB - The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. | 02-24-2011 |
20110116188 | DISK DRIVE DEVICE HAVING FUNCTION OF DISCHARGING STATIC ELECTRICITY - A bearing unit includes a shaft and a hub as a conductive rotating body that supports a recording disk. Also, the bearing unit includes a conductive resin housing configured to surround at least part of the shaft to support the shaft and to be able to conduct electricity to the recording disk via the shaft. The conductive resin housing includes a conductive adhesive to be applied to secure conduction with the base housing. The conductive resin housing has an exposed portion where the inner layer of the conductive resin housing is exposed, at a position to which the conductive adhesive is applied. | 05-19-2011 |
20120262823 | DISK DRIVE DEVICE WITH HUB - The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. | 10-18-2012 |
20130148241 | DISK DRIVE DEVICE WITH HUB - The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. | 06-13-2013 |
20130342935 | DISK DRIVE DEVICE WITH HUB WITH THINNESS AND SUPPRESSED TORQUE DECREASE - The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. | 12-26-2013 |
20140362471 | DISK DRIVE DEVICE WITH HUB WITH THINNESS AND SUPPRESSED TORQUE DECREASE - The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. | 12-11-2014 |