摘要:
A hard disk drive that includes a disk, a head, and a filter enclosed by a base plate and a cover plate. The base plate has a filter wall with a fore end and an aft end. The fore end of the filter wall has a tapered surface that extends to an apex. The distal end of the filter wall has a first filter attachment portion separated from a second filter attachment portion by a groove. The second filter attachment portion may be longer than the first filter attachment portion. The filter wall induces a flow of air that inhibits particle attachment to a reverse side of the filter.
摘要:
Disclosed is a hard disk drive that includes at least one disk enclosed by a cover and a disk. A damper is separated from the disk by an air gap about 1.0 mm. The damper and air gap reduce the velocity of the air flow and any vibration associated with the flow of air.
摘要:
Method estimating flying height of read-write head in slider near rotating disk surface. Sensing leakage current between slider and spindle motor to create potential difference measurement. Converting potential difference measurement to create estimate of flying height. Method controlling flying height using method for estimating by adjusting vertical actuation signal to micro-actuator assembly. Embodiments implement these methods. Embedded circuit and hard disk drive, each including the apparatus. The invention includes methods of manufacturing and their products.
摘要:
A hard disk drive with a disk base including a disk wall with a first intake, a second intake off of the first intake, an outlet and an air filter configured to receive a first airflow from the first intake and suction from a second airflow from the second intake creating negative pressure at a trapping surface of the air filter away from the outlet. At least one disk rotates to create a rotating disk surface generating airflow configured to enter the first intake to create the first airflow. A disk damper includes an enclosing wall neighboring the air filter to create a flow chamber providing a third airflow through the outlet formed of the first air flow crossing the trapping surface and the second air flow. A disk cover mounts on the disk base to encapsulate the air chamber. The disk base and disk damper are disclosed.
摘要:
A slider cradle for lateral positioning slider near rotating disk surface in hard disk drive, consisting essentially of piezoelectric micro-actuator coupling to slider cradle blank, further including piezoelectric micro-actuator coupling to first slider mount arm near slider mount and near slider mount base. A head gimbal assembly including slider cradle coupling to slider, flexure finger, and flexure finger electrically coupling to piezoelectric contacts. An actuator arm coupling to at least one head gimbal assembly. An actuator assembly, comprising voice coil coupling to at least one actuator arm. A hard disk drive containing actuator assembly. The invention includes a method of making slider cradle blank and slider cradle. The products of this process. Making head gimbal assembly, actuator assembly and hard disk drive using the invention's components. The head gimbal assembly, the actuator assembly, and the hard disk drive are products of these processes.
摘要:
A hard disk drive and head gimbal assembly including a flexure finger with a micro-actuator split of the flexure supporting a micro-actuator control line, leading to minimized gimbal width for the flexure finger about the micro-actuator assembly including the coupled slider and micro-actuators to reduce mechanical vibrations caused by wind off of a rotating disk surface accessed by the slider.
摘要:
A micro-actuator assembly, which includes a first micro-actuator. The first micro-actuator includes: Two pivot spring pairs coupling to first stator and second stator. Two flexure spring pairs and pitch spring pair coupling to central movable section, which includes signal pair paths coupling to read-write head of a slider. The central movable section positions read-write head and conducts read-write head signaling. First micro-actuator electrical stimulus is through some of its springs. Micro-actuator assembly may include second micro-actuator with third stator and fourth stator interacting with central movable section. The second micro-actuator may also provide motion sensing, possibly indicating collision with the rotating disk surface being accessed. The invention includes head gimbal assemblies, actuator arms, actuator assemblies, voice coil assemblies and hard disk drives containing various embodiments of these micro-actuator assemblies.
摘要:
A hard disk drive is disclosed including at least one air filter mounted on a shroud wall of the base and at least two disk dampers where at least one disk damper covers a fraction of the maximal covering angle configured with the air filter to optimize both the air filter and disk dampening. Methods of manufacturing the hard disk drive are also disclosed.
摘要:
A region of flexure layer, including slider mounting face coupled to offset mounting face for at least one piezoelectric device. The offset mounting face for piezoelectric device provides asymmetry between first contact region and second contact region based upon notch and slot. This is cost effective, reliable support for piezoelectric devices used for micro-actuation in hard disk drives. The slider moves based upon asymmetry of the offset mounting face coupled to the piezoelectric device twisting the slider mounting face. The invention includes flexure containing the region of the flexure layer. The invention includes head gimbal assembly including flexure, actuator arm including head gimbal assembly, and actuator assembly including actuator arm, and hard disk drive including actuator assembly. The invention includes manufacturing the region, the flexure, the head gimbal assembly, the actuator arm, the actuator assembly and the hard disk drive, as well as these products of the manufacturing processes.
摘要:
A hard disk drive that includes an optical pick-up coupled to a head of a hard disk assembly (“HDA”). The head is located adjacent to a disk. The optical pick-up can sense the surface of the disk by detecting light reflected from the surface. The optical pick-up is coupled to a particle circuit that can distinguish between an embedded particle and a floating particle from the reflected light.