JPH06139735A - Loading/unloading mechanism - Google Patents

Abstract

PURPOSE:To provide a loading/unloading mechanism low in the danger that a floating head slider is in contact with a magnetic recording medium in a magnetic disk device. CONSTITUTION:The magnetic disk device is constituted of a suspension mechanism for applying a decided load to a floating head slider 2 mounted with an electromagnetic transformation element and provided with a cum 6 of a decided inclined surface, a comb-shaped supporting mechanism 8 having a cum 7 of an inclined surface having the same angle as the cum 6 on the tip thereof, abutted on the cum 6 to be provided in the suspension mechanism 3 at the non-operation time of the device and for separating the electromagnetic element away from a magnetic recording medium surface 1. Thus, since the posture change of the floating head slider 2 at the time of the loading/unloading is restrained, the loading/unloading mechanism low in the possibility that the floating head slider 2 is in contact with the magnetic recording medium 1 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk drive, and more particularly to loading / unloading a floating head.

[0002]

2. Description of the Related Art Conventionally, in a magnetic disk device, contact start / stop (CS
The S) method has been used. This is a method in which the magnetic disk device is started and stopped while the magnetic recording medium and the floating head slider are in contact with each other, and the floating head slider and the magnetic recording medium are prevented from being attracted to each other while the magnetic disk device is stopped. Therefore, it is necessary to moderately roughen the surface of the magnetic recording medium. For this reason, the flying height of the floating head slider must be secured more than necessary, which hinders the improvement of storage density and the generation of dust associated with friction and wear during CSS is an unavoidable problem. Further, with the current increase in recording density, high-speed access, and high transfer rate of magnetic disk devices, the flying height of floating head sliders is being reduced. The smoothness of the recording medium has increased, and the probability of head crash due to dust and the attraction between the magnetic recording medium and the floating head slider has increased.

On the other hand, since a miniaturized magnetic disk device is mounted on a laptop computer or the like, in order to suppress power consumption, there is a tendency to stop the magnetic disk device when there is no input for a certain period of time. CS
There is a further demand for S characteristics. Further, impact resistance is also required, and when a strong impact is applied in the CSS method, there is a risk of damaging the magnetic recording medium, the floating head slider, the head and the like.

As one means for solving the above problems, a magnetic disk apparatus having a floating head slider load / unload mechanism for starting and stopping the magnetic disk apparatus without contacting the floating head slider with the magnetic recording medium has been developed. ing.

[0005]

In order to realize a reliable head-disk interface in load / unload of a floating head slider, both the load / unload speed and the attitude of the slider at the moment of load / unload are important. It becomes a condition. This is because the risk of contact between the floating head slider and the magnetic recording medium becomes significantly high if the load / unload speed is too fast, or if the floating head slider is loaded or unloaded with a large pitch or roll. is there. The conventional load / unload mechanism is provided with a cam on a comb-like suspension support mechanism sandwiching a magnetic recording medium as shown in FIG. 4, or with a cam on a load suspension as shown in FIG. It was In the case of FIG. 4, only one side of the load suspension mechanism 3 has a cam 4 having a certain inclined surface at the moment of unloading.
There is a drawback that the posture variation of the floating head slider 2 becomes large because of being supported by. On the other hand, in the case of FIG. 5, when the position of the cam 5 having a certain inclined surface supported by the comb-shaped load suspension support mechanism 8 is on the central axis of the load suspension mechanism 3 at the moment of load unloading, the floating head It is possible to suppress the posture change of the slider 2. However, the distance between the surface of the magnetic recording medium 1 and the comb-shaped load suspension supporting mechanism 8 when the magnetic disk device is not operating is not constant due to an assembly error, and due to this influence, the speed at the moment of loading of the floating head slider 2 and The attitude deviates from a predetermined design value, and as a result, there is a great possibility that the magnetic head crashes due to the contact between the floating head slider 2 and the magnetic recording medium 1. Moreover, the above phenomenon can be said almost similarly in the case of unloading.

The present invention solves the above problems remaining in the prior art and reduces the attitude change of the floating head slider at the moment of load / unload due to an error during assembly, thereby reducing the head slider during load / unload. The present invention is to provide a floating head slider load / unload mechanism with low risk of contact between the magnetic recording medium and the magnetic recording medium.

[0007]

In order to achieve the above object, a load / unload mechanism according to the present invention applies a predetermined load to a floating head slider equipped with an electromagnetic transducer in a magnetic disk drive, and A suspension mechanism having a cam having a predetermined inclined surface and a cam having an inclined surface having an angle equal to that of the cam at the tip are in contact with the cam provided in the suspension mechanism when the apparatus is not operating, and the electromagnetic conversion element Is composed of a comb-like support mechanism for separating the magnetic recording medium from the surface of the magnetic recording medium.

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a load / unload mechanism according to the present invention, and shows a state in which the floating head slider 2 is unloaded and an air film is floating above the magnetic recording medium 1. The inclination direction of the cam 6 provided in the load suspension support mechanism 3 is perpendicular to the longitudinal direction of the load suspension mechanism 3. The cam 7 at the tip of the comb-shaped load suspension support mechanism 8 has the same inclination angle as the cam 6,
The inclined surfaces face each other as shown in the figure.

Next, the load operation will be described with reference to FIG. FIG. 2 (a) shows a state in which the device is stopped,
The cam 6 is supported by a comb-shaped load suspension support mechanism 8. When the loading operation starts, arrow A
The road suspension mechanism 3 moves in the direction of. FIG. 2B shows the state at the moment when loading is performed.
The cam 6 moves while sliding on the cam 7 having inclined surfaces of the same angle. Therefore, when the comb-shaped load suspension mechanism 8 is installed parallel to the magnetic recording medium 1, the angle formed by the magnetic recording medium 1 and the cam 6 is the angle formed by the magnetic recording medium 1 and the cam 7. When the cam 6 is installed on the load suspension mechanism 3 so as to be equal to the angle, the attitude of the floating head slider 2 is kept substantially constant during the load operation.

Next, the unload operation will be described with reference to FIG. In FIG. 3A, the floating head slider 2 in the air film floating state starts moving in the direction of arrow B together with the load suspension mechanism 3 when unloading is started. FIG. 3B shows the moment when the unload operation is performed, and the reverse operation of the load operation is just performed. Therefore, the attitude of the floating head slider 2 at the moment of unloading is the same as that at the moment of loading, and the attitude of the floating head slider 2 until it is completely unloaded is also kept substantially constant. By setting the posture in advance so that the floating head slider 2 and the magnetic recording medium 1 are less likely to come into contact with each other,
It is possible to perform load / unload operation with low risk of contact.

[0011]

As described above, according to the present invention,
Since the unloading is performed while the cams having the same opposing angles are in contact with each other, even if the distance between the magnetic recording medium surface and the comb-shaped load suspension support mechanism is changed due to an assembly error, the floating head slider is moved against the magnetic recording medium. It is possible to raise and lower the head while keeping it in a predetermined posture, and it is possible to provide a highly reliable load / unload mechanism in which the possibility of contact between the floating head slider and the magnetic recording medium is small.

[Brief description of drawings]

FIG. 1 is a diagram showing a load / unload mechanism according to an embodiment of claim 1 of the present invention.

FIG. 2 is a diagram showing a load operation of the load / unload mechanism according to the embodiment of claim 1 of the present invention.

FIG. 3 is a diagram showing an unloading operation of the load / unload mechanism according to the embodiment of claim 1 of the present invention.

FIG. 4 is a diagram showing a conventional load / unload mechanism.

FIG. 5 is a diagram showing a conventional load / unload mechanism.

[Explanation of symbols]

 1 magnetic recording medium 2 floating head slider 3 load suspension mechanism 4, 5, 6, 7 cam 8 comb-shaped load suspension support mechanism

Claims (1)

[Claims] 1. In a magnetic disk device, a suspension mechanism having a cam having a predetermined inclined surface and applying a predetermined load to a floating head slider equipped with an electromagnetic conversion element, and a tip having an angle equal to that of the cam. A load having a cam having an inclined surface and comprising a comb-like support mechanism that abuts on a cam provided in the suspension mechanism when the apparatus is not operating and separates the electromagnetic conversion element from the surface of the magnetic recording medium. Unload mechanism.