摘要:
A flexible printed circuit board (150A-150H) has a flexible dynamic region (151), and relatively rigid static regions (152,153) between which the dynamic region (151) extends. Portions of a base layer (161), a conductive layer (165) extending on the base layer (161), and a cover layer (162) covering the conductive layer (165) make up the dynamic region (151). Extensions of the base layer (161), the conductive layer (165), and the cover layer (162), and portions of a metal layer (180) to which the base layer (161) is attached make up each of the static regions (152,153). The metal layer (180) enhances the rigidity of the flexible printed circuit board (150A-H) at the static regions (152,153). The metal layer (180) also has rounded corners (190A-D,192A-D) at sides of each of the boundaries (i,ii) between the dynamic region (151) and each of the static regions (152, 153) to minimize stress concentrations at the boundaries (i,ii). The conductive layer (165) is made up of real traces (166) through which electrical signals are transmitted, and dummy traces (167A). The dummy traces (167A) are disposed outwardly of the real traces (166) to prevent the flexible printed circuit board (150A-H) from cracking at the boundaries (i,ii) between the dynamic region (151) and each of the static regions (152,153). In a hard disk drive (HDD) the flexible printed circuit board (150A-F) electrically connects a head stack assembly (HSA) and a main circuit board.
摘要:
A flexible printed circuit including an interior insulation layer, a first conductive layer formed on a surface of the interior insulation layer in a circuit pattern, a first exterior insulation layer deposited to cover the surface of the interior insulation layer and the first conductive layer, a second conductive layer formed on the other surface of the interior insulation layer in a circuit pattern, and a second exterior insulation layer deposited to cover the other surface of the interior insulation layer and the second conductive layer. The flexible printed circuit is manufactured by depositing an interior insulation layer on a base layer, forming a first conductive layer on a surface of the interior insulation layer in a circuit pattern, depositing a first exterior insulation layer to cover the surface of the interior insulation layer and the first conductive layer, removing the base layer, forming a second conductive layer on another surface of the interior insulation layer in a circuit pattern, and depositing a second exterior insulation layer to cover the another surface of the interior insulation layer and the second conductive layer.
摘要:
An actuator (130) of a disk drive to move a read/write head for recording and reproducing data to a predetermined position on a disk (120), the actuator includes a swing arm (132) rotatably installed inside the disk drive, a suspension (133) coupled with a leading end portion of the swing arm and supporting a slider on which the head is mounted, and an absorption filter (170) attached with one side of the swing arm to confront an airflow in a predetermined direction according to rotation of the disk, and to absorb foreign materials in the airflow.
摘要:
A method and an apparatus for controlling a disc drive, and more particularly, to a method and an apparatus for controlling a disc drive using a counter-electromotive force, which prevents collision and malfunction of a transducer and a disc by determining external vibrations and the magnitude of a shock without installing an additional shock sensor in a disc drive, are provided. The method for controlling a disc drive using a counter-electromotive force comprises (a) detecting a voltage applied to a voice coil during a predetermined mode, (b) performing an operation of the value of the counter-electromotive force using the voice coil voltage detected in (a), (c) comparing the value of the counter-electromotive force operated in (b) with a predetermined threshold, and (d) when the value of the counter-electromotive force is equal to or larger than the predetermined threshold, controlling a voice coil motor and a spindle motor so that a current mode is stopped and a parking or unloading mode is executed.
摘要:
A head stack assembly (HSA) protecting member to be installed in the HSA to protect the HSA, and a method of installing the HSA in a hard disk drive (HDD) by using the HSA protecting member are provided. The HSA protecting member includes a first spacer which is interposed between front ends of a pair of suspensions on which a pair of sliders facing each other are mounted, respectively, and which projects to prevent both front ends of the suspensions from contacting each other; a pair of limiters formed above and below the first spacer, such that the front ends of the pair of suspensions can be inserted into the suspension receiving portions, respectively, to restrain the front ends of the suspensions from shaking up and down; and an installation pin formed opposite the first spacer and the limiters and inserted into the HSA.
摘要:
An HGA protecting method and member and method of implementing the protecting method and member in a hard disk drive. The HGA includes an actuator, at least one pair of suspensions coupled to the actuator, a flexure having a stationary end fixed to each of the suspensions and a free end, and a slider attached between the stationary end and the free end of the flexure. The HGA protecting member may include a finger restricting excessive movement of the suspension. The finger may further have a flexure supporting portion supporting the free end of the flexure.
摘要:
A head stack assembly (HSA) protecting member to be installed in the HSA to protect the HSA, and a method of installing the HSA in a hard disk drive (HDD) by using the HSA protecting member are provided. The HSA protecting member includes a first spacer which is interposed between front ends of a pair of suspensions on which a pair of sliders facing each other are mounted, respectively, and which projects to prevent both front ends of the suspensions from contacting each other; a pair of limiters formed above and below the first spacer, such that the front ends of the pair of suspensions can be inserted into the suspension receiving portions, respectively, to restrain the front ends of the suspensions from shaking up and down; and an installation pin formed opposite the first spacer and the limiters and inserted into the HSA.