JPH0341680A - Carriage locking mechanism for magnetic disk device - Google Patents

Abstract

PURPOSE:To improve impact resistance by providing a U-shaped locking bar which moves to a position to pinch a pin provided on a head arm at the time of stopping and to a position to release the pin at the time of rotation at the other end of a supported holder for fixing a fin. CONSTITUTION:The U-shaped locking bar 4 which moves to the position to pinch the pin 5 fixed to the head arm 8 at the time of stopping of the magnetic disk and to the position to release the pin 5 at the time of rotation is provided at the other end of the supported holder 5 for fixing the fin 1. Namely, the locking bar 4 pinches and fixes the pin 5 held in the position A by the return force of a spring 6 at the time of stopping of the device. On the other hand, the fin 1 receives wind by the generation of the wind pressure arising from the rotation of the magnetic disk 9 and releases the fixing of the pin 5 by overcoming the return force of the spring 6 at the time of the use of the device. The impact resistance is improved in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a carriage lock mechanism for a magnetic disk drive, and more particularly to a carriage lock mechanism for a magnetic disk drive that is resistant to vibrations and unexpected shocks during transportation.

[Prior Art] In the conventionally mainstream winchester type magnetic disk device, the carriage mechanism that drives the magnetic head is not energized when the device is stopped, so the magnetic head loses its binding force. .

In order to prevent such a situation, magnetic disk drives have conventionally been provided with carriage lock mechanisms, but these have been manual or electric lock mechanisms using a solenoid or the like.

[Problem to be solved by the invention] If a magnetic head loses its binding force and is subjected to an external impact or a large impact during transportation, the head position may shift and damage the disk plate. there were.

Therefore, in the past, a manual or electric type carry lock machine was used, but the manual type had the problem of forgetting to lock it, and the electric type had the problem of increased power consumption.

[Means for Solving the Problems] An object of the present invention is to solve the problems of the prior art described above and to provide a carriage lock mechanism for a magnetic disk device that is strong against vibrations and unexpected shocks during transportation. .

The carriage lock mechanism of the magnetic disk device of the present invention includes:
at least one fin positioned to receive wind as the magnetic disk rotates; a holder that fixes the fin; an axis that is the center of rotation of the holder; and a shaft that is fixed to the holder and holds the magnetic disk when the magnetic disk is stopped. It is characterized in that it includes a U-shaped lockper that moves to a position that sandwiches a pin fixed to the head arm and to a position that releases the pin when the magnetic disk rotates.

[Embodiment] Next, a carriage lock mechanism of a magnetic disk device of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of an embodiment of a carriage lock mechanism of a magnetic disk device according to the present invention.

FIGS. 2 and 3 are surface views of the carriage lock mechanism of the magnetic disk device of FIG. 1 when the device is stopped and when it is in use, respectively.

As illustrated in FIGS. 1 to 3, this embodiment
A fin 1 is placed in a position to receive the wind caused by the rotation of the magnetic disk 9, a holder 2 that fixes the fin 1 and is rotatable around the shaft 3, and a holder 2 that is attached to the holder 2 and receives the wind as the holder 2 rotates due to the generation of wind pressure. It consists of a locker 4 that locks and unlocks the pin 5 fixed to the rad arm 8 when moving, and a spring 6 that applies a return force to the rotation 81 mechanism.

In the illustrated preferred embodiment, only one carriage lock mechanism is provided for the magnetic disk drive, but two or more carriage lock mechanisms may be provided for safety.

As shown in FIGS. 2 and 3, when the device is stopped, the locking member 4 returns to the position where it clamps and fixes the pin 5 at position A by the return force of the spring 6. As best illustrated in FIG. 1, the locking member 4 clamps and fixes the pin 5 from a direction substantially perpendicular to the moving direction of the pin 5. In this way, the carriage lock mechanism enters the locked state.

On the other hand, when the device is in use, the fin 1 receives the wind due to the wind pressure generated by the rotation of the magnetic disk 9, overcomes the return force of the spring 6, moves the locker 4 to position B, and pin 5
Unfix.

In the drawings, 7 is a carriage of the magnetic disk device, 8 is a helad arm, and 10 is a base plate.

[Effects of the Invention] As explained above, the carriage lock mechanism of the magnetic disk drive of the present invention includes at least one fin located at a position that receives wind caused by rotation of the magnetic disk, a holder for fixing the fin, and a holder. The pin is fixed to the holder and is fixed to the head arm that holds the magnetic disk when the magnetic disk is stopped.
Since it includes a U-shaped locking member that moves to the position where the pin is released when the magnetic disk rotates, the impact resistance when the device is stopped is improved, and as a result, it is able to withstand vibrations and unexpected impacts during transportation. Works effectively.

In addition, since the wind pressure generated by the rotation of the magnetic disk is used,
This has the effect of avoiding increasing the power consumption of the device.

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of a carriage lock mechanism of a magnetic disk device according to the present invention. FIGS. 2 and 3 are surface views of the carriage lock mechanism of the magnetic disk device of FIG. 1 when the device is stopped and when it is in use, respectively. 1... Fin 2... Holder 3... Shaft 4... Locker 5... Pin 6... Spring 7... Carriage 8... Head arm 9... Magnetic disk 10...・Base plate

Claims (1)

[Scope of Claims] At least one fin located in a position to receive wind caused by rotation of a magnetic disk; a holder for fixing the fin; an axis serving as a rotation center of the holder; A U-shaped lock bar that moves to a position that pinches a pin fixed to a head arm that holds the magnetic disk when the disk is stopped, and moves to a position that releases the pin when the magnetic disk rotates. Features a carriage lock mechanism for magnetic disk drives.