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    • 3. 发明授权
    • Actuator lock
    • 执行器锁
    • US5162959A
    • 1992-11-10
    • US705751
    • 1991-05-28
    • Haldun ArinRick Freeman
    • Haldun ArinRick Freeman
    • G11B25/04G11B33/12
    • G11B33/121G11B25/043
    • An actuator lock to hold the disk drive positioner in the parked position after shut down includes a latch arm extending from a selected portion of the positioner, a solenoid, a locking lever and a latch. The solenoid has a coil and an armature. The armature is moveable between a normally biased first armature position and a second armature position. The solenoid coil when energized by a current pulse upon shut down of the disk drive moves the armature into the second position. The locking lever is rotatably mounted to the armature and has a first end. The locking lever is movable between a normally biased first lever position and second lever position. The first end engages the latch arm when the positioner has been brought to the parked position by the current pulse and the armature coil has also been energized. When the armature is in the first armature position, the locking lever is non-interactive with the latch arm. After the armature has been brought to its second position the first end of the locking lever engages the latch arm thereby locking the device. The latch is a mechanical hold feature which will maintain the armature in its second position to maintain the positioner in a locked state. To unlock the actuator latch, upon power up of the disk drive, the actuator will begin to move the positioner. A force of the latch arm against the locking lever will move the locking lever into its second lever position which releases the mechanical latch. When the mechanical latch is released, the locking lever and the armature each return to their first normally biased position.
    • 在关闭之后将盘驱动器定位器保持在停放位置的致动器锁包括从定位器的选定部分,螺线管,锁定杆和闩锁延伸的闩锁臂。 螺线管具有线圈和电枢。 衔铁可在正常偏置的第一衔铁位置和第二衔铁位置之间移动。 螺线管线圈当磁盘驱动器关闭时被电流脉冲激励时,将电枢移动到第二位置。 锁定杆可转动地安装在电枢上并具有第一端。 锁定杆可在正常偏置的第一杆位置和第二杆位置之间移动。 当定位器已经通过电流脉冲进入停止位置时,第一端接合闩锁臂,并且电枢线圈也被通电。 当电枢处于第一衔铁位置时,锁定杆与闩锁臂是非交互的。 在电枢被带到其第二位置之后,锁定杆的第一端接合闩锁臂,从而锁定该装置。 闩锁是机械保持特征,其将电枢保持在其第二位置,以将定位器保持在锁定状态。 为了解锁执行器闩锁,在磁盘驱动器上电时,执行器将开始移动定位器。 锁定臂抵靠锁定杆的力将使锁定杆移动到释放机械闩锁的第二杆位置。 当机械闩锁被释放时,锁定杆和衔铁各自返回到其第一正常偏压位置。