Inertial latching mechanism and information recorder using the mechanism

Abstract

An inertial latching mechanism of high reliability, which can be incorporated in a slim profile disk drive or the like information recorders. Describing practically, the mechanism includes freely revolvable inertia arm 6 which couples with actuator 3when head arm is in a shunt position or the vicinity, whereas the coupling is released when the actuator is in proximity with disk 1 or the neighborhood; a drive means for holding inertia arm 6 to a right posture by taking advantage of magnetic pulling force at the place where the inertia arm is released from the coupling with actuator 3. Furthermore, coil arm 9's restriction section 9b and inertia arm 6's contact section 6b are disposed opposed to each other for forming a revolution restriction means which restricts an anti-clockwise revolution of inertia arm 6, as viewed from the above, when coil arm 9's coupling section 9a and inertia arm 6's coupling section 6a are in uncoupled state. The above-configured inertial latching mechanism can be used in a magnetic disk drive, an optical disk drive, a magneto-optical disk drive and other disk information recorders.

Description

technical field [0001] The present invention relates to an actuator used in disk information recording devices such as a magnetic disk device, an optical disk device, and a magneto-optical disk device having a suspension-type signal conversion element such as a magnetic head or an optical head. In an unloaded state, when the actuator in the retreat position is impacted from the outside, the inertial latch mechanism of the actuator after the function of preventing it from unintentionally swinging toward the recording medium side, and a recording device using the same . Background technique [0002] Currently, magnetic disk devices, especially magnetic disk devices mounted in portable information recording devices such as notebooks, require high reliability against shocks during non-operation. [0003] When the magnetic disk device is not operating, when the slider mounted on the actuator moves from the retracted position to the data area on the surface of the disk due to imp...

AI Technical Summary

Problems solved by technology

As a result, the mating position of the actuator 91 and the inertial arm 94 is shifted, so that the normal mating state cannot be realized

Therefore, there will be an abnormal collision in which the fitting portion formed into an involute shape of the actuator 91 presses the side of the inertial arm 94 that is not formed into an involute shape fitting portion, and actuation occurs. If the device 91 cannot complete the unloading operation, it becomes the main cause of the failure of the device

In addition, even if the unloading action is completed, the inertial latch mechanism cannot work normally due to the failure to form a normal mating state, so it is possible that once it receives a counterclockwise rotational impact from the outside when it is not operating , the actuator 91 will swing counterclockwise and move toward the surface of the disk, so that the slider mounted on the actuator 91 is attracted to the surface of the data area of ​​the disk, or due to collision with the surface of the disk Damage the surface of the disc, etc., resulting in a major failure that destroys the data recorded on the disc

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