Patent application number | Description | Published |
20080212237 | Disk drive device and manufacturing method thereof - In a disk drive device having a double cover structure with low-density gas enclosed therein, embodiments of the present invention allow a more reliable leak inspection to be performed on the second cover and to prevent defects caused by joining the secondary cover. An HDD according to an embodiment of the present invention comprises a ventilation path from a ventilation hole on an inner cover to a space between the inner cover and an outer cover. An outer peripheral end of an adhesive layer is apart from a joining section, which is exposed in the space. Helium gas flowing out of the ventilation hole flows to the space via the ventilation path and remains within the space. This enables detection of leakage of the helium gas from the joining section to be performed more easily. | 09-04-2008 |
20080259503 | Magnetic disk drive and soldering method of feed-through - Embodiments of the present invention help to achieve a solder joining structure having high reliability, in which even if a componential material of a flange of a feed-through of a sealed magnetic disk drive is an iron-based material such as kovar, and a componential material of a base of the drive is an aluminum-based alloy, leakage of low-density gas is dramatically reduced. According to one embodiment, a base has a stepped portion in the inside of a periphery of an opening, and an inclined surface extending to the outside of the base is formed at an edge of a surface of the stepped portion, on which a flange of a feed-through is placed, thereby when the stepped portion of the base is joined by soldering with the flange of the feed-through, a solder fillet is formed not only in the inside of the base, but also in the outside thereof. | 10-23-2008 |
20080310048 | Disk drive device and fabricating method thereof - In a disk drive device having a double cover structure with low-density gas enclosed therein, embodiments of the present invention help to securely perform leak inspection on an outer cover and to prevent defects caused in joining the outer cover. According to one embodiment, a hard disk drive (HDD) comprises a flow amount adjuster on a base-facing side of its inner cover. Helium gas in an enclosure goes out through a ventilation hole via diffusion channel of a flow amount adjuster. The emitted helium gas remains in the space between the inner cover and an outer cover. This achieves easier detection of the leakage of helium gas from the joining section of the outer cover and prevention of emission of too much helium gas from the enclosure. | 12-18-2008 |
20090168233 | Manufacturing method of hermetic connection terminal used in a disk drive device having hermetically sealed enclosure and disk drive device - To efficiently manufacture a feedthrough used in a disk drive device having a hermetically sealed enclosure, embodiments of the present invention manufacture a feedthrough used in an HDD having a hermetically sealed enclosure. An embodiment of a manufacturing method of the present embodiment manufactures a columnar body, cuts the columnar body in the direction vertical to the axes of pins, and cuts out a feedthrough. Then, necessary plating is made on the outer surfaces of the cut out feedthrough. The columnar body comprises a hollow tube, a plurality of pins inserted inside the tube, and an insulating sealant filled inside the tube. This manufacturing method achieves efficient manufacture of the feedthrough. | 07-02-2009 |
20090300907 | Method for manufacturing magnetic disk unit - Embodiments of the present invention provide a method for manufacturing a magnetic disk unit, the method permitting easy and efficient introduction of a low-density gas into the enclosure. According to one embodiment, an enclosure of the magnetic disk unit has a gas inlet and a gas outlet, each of which is provided with a filter. When the enclosure is filled with helium, the mass flow rate of helium being supplied to the gas inlet is detected and the mass flow rate of helium being supplied to the gas inlet is controlled according to the thus detected mass flow rate of helium. | 12-10-2009 |
20100296197 | DISK DRIVE WITH ADHESIVELY BONDED PIVOT-BEARING ASSEMBLY - A disk drive. The disk drive includes a head for accessing a disk, a suspension for supporting the head, a carriage coupled to the suspension, a pivot-bearing assembly, an adhesive, and an adhesion inhibitor. The pivot-bearing assembly is housed in a hole of the carriage that is configured to rotate in such a way that the carriage is configured to oscillate. The adhesive is disposed between the pivot-bearing assembly and an inner circumferential surface of the hole for bonding the pivot-bearing assembly with the carriage. The adhesion inhibitor is disposed on the same surface as the adhesive for controlling a region of adhesion. | 11-25-2010 |
20120008235 | REDUCE LEAKAGE OF LOW-DENSITY GAS DURING LOW-DENSITY GAS INJECTION INTO A DISK DRIVE - Embodiments of the present invention help to prevent leakage of low-density gas during low-density gas injection into a disk drive device and to perform low-density gas injection efficiently. In a hard disk drive (HDD) according to one embodiment of the present invention, an injection hole filter with a valve function is attached to a helium injection hole in order to inject helium gas in an enclosure. The injection hole filter has a valve member configured to operate in an open state or closed state. The open state is a state while the helium gas is being injected and the closed state is a state after the helium gas has been finished to be injected. The valve member is in the open state if the outside pressure is higher than the inside pressure and is in the closed state if the inside pressure is higher than the outside pressure. | 01-12-2012 |
20120162816 | AIRFLOW SHROUD THAT REDUCES VIBRATION OF A ROTATING DISK IN A HARD DISK DRIVE - A hard disk drive including a base portion, a motor-hub assembly to which at least one disk is coupled, the motor-hub assembly coupled with the base portion and an airflow shroud coupled with the base portion. The airflow shroud including an airflow inlet oriented parallel to the disk and an airflow outlet oriented perpendicular to the disk. In so doing, the airflow shroud reduces vibration of a rotating disk in a hard disk drive. | 06-28-2012 |
20120170148 | REDUCING AIR FLOW EXPOSURE TO CONDUCTIVE COMPONENTS OF A HARD DISK DRIVE - A hard disk drive including a housing, at least one disk mounted to the housing, an actuator mounted to the housing and being movable relative to the at least one disk, a conductive component support coupled with the actuator and extending the first surface, the conductive component support having a support wall attaching the conductive component support to the actuator, and a boss coupled with a first surface of the actuator and the support wall, the boss having a first end facing a flat coil side of the actuator and a second end facing a head gimbal assembly side of the actuator, wherein the first end extends further toward the flat coil side than the conductive component entrance portion of the conductive component support such that a portion of the boss overlaps a portion of the conductive component support. | 07-05-2012 |
20140300988 | Hard Disk Drive Bypass Channel Having A Close-Sided Voice Coil Motor - Approaches to improving head positioning accuracy in a hard disk drive, by suppressing airflow disturbances that would otherwise cause unwanted component vibration, include a voice coil motor having a sidewall spanning a gap between the VCM upper yoke and lower yoke. This VCM sidewall also serves as the inner wall of a bypass channel, for diverting airflow away from the actuator arm and associated components. | 10-09-2014 |