JPH0528471A - Disk hanger - Google Patents

Abstract

PURPOSE:To form a lubricating film uniform in thickness by guiding a lubricating liquid to a guide member from a disk hanger or the like. CONSTITUTION:The disk hanger 9 hanged nine piece of the disk 2 is dipped into the lubricating liquid 5 and is taken up. At this time, the liquid 5 flows smoothly along the disk hanging member 8 and is guided by the guide member 6a so that the droplet of the liquid 5 does not drop to the liquid 5 from the member 8 at the time of taking up. After taking up is finished, the droplet does not have influence upon the thickness of the lubricating agent on the surface of the disk 2 with ripple by falling down of the droplet, as the member 6a is longer than radial of the disk 2 and the liquid flows in the member 6a. In this way, the lubricating film uniform in thickness is formed on the surface of the disk 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk hanger used in an immersion type lubricant application device for forming a lubricant film on both surfaces of a magnetic disk (hereinafter referred to as "disk").

[0002]

2. Description of the Related Art In recent years, a magnetic head floats on a magnetic disk that rotates at a high speed for recording and reproduction, and when not in use, the magnetic head comes into stop contact with the disk. Magnetic disk drive devices of the type that slide on the disk for a certain time have been developed.

In such an apparatus, the uniformity of the film thickness of the lubricant on the disk surface is an important factor. As a method of forming a lubricant, a method of locking a disk on a disk hanger and applying it by dipping in the lubricant is generally used.

A conventional disc hanger will be described below. FIG. 4A is a side view of a conventional disc hanger showing a state of being immersed in an immersion type lubricant application device, and FIG. 4B is a front view thereof. 1 is an L-shaped side surface, a disc hanger composed of a hanger holding member 1a and a round bar-shaped disc locking member 1b arranged at the lower end thereof, 2 is a circular disc, and 3 is a disc 2. An opening 4 for spindle engagement provided in the central portion, 4 is a container filled with a lubricant solution diluted with a volatile organic solvent, and 5 is a lubricating solution.

The operation of the conventional disk hanger of the immersion type lubricant applying apparatus having the above-mentioned structure will be described below. Disc locking member 1 of disc hanger 1
The disk 2 is hung through the central opening 3 of the disk 2 and the disk 2 is immersed in the lubricating solution 5 filled in the container 4 and then the disk 2 is pulled up or the liquid level of the lubricating solution 5 is changed to the disk. The lubricant was applied by lowering it below 2.

[0006]

However, in the above-mentioned conventional configuration, immediately after the disc hanger comes out from the liquid surface of the lubricating solution to the liquid surface at the time of applying the lubricant, the lubricating solution trapped in the disc hanger is gravitated by the disk. It is difficult to form a lubricating film with a uniform thickness on the disk surface during pulling up by dripping on the surface or swaying the liquid surface by dropping the trap liquid on the lubricating liquid surface. During the disk drive, a phenomenon occurs in which the disk is attracted to the head and the drive spindle motor does not rotate, and the reliability of the disk drive is impaired.

The present invention solves the above-mentioned problems of the prior art by preventing dripping of the lubricating liquid trapped in the disc hanger, forming a lubricating film of uniform thickness on the disc surface, and providing a high quality disc. It is an object of the present invention to provide a disc hanger that can be mass-produced at low cost.

[0008]

In order to achieve this object, the disc hanger of the present invention is a disc hanger having a T-shaped side surface as a whole, which is arranged vertically and has a guide member at its end. Integrally or separately arranged hanger holding member, and the inclination angle θ from the base to the tip is 0 ° <
A disc locking member is provided which has a lower surface that is inclined upward at θ <45 °, and is disposed substantially orthogonal to the upper portion of the guide member of the hanger holding member.

[0009]

With this configuration, the lubricating solution from the disc hanger or the like is guided to the guide member, so that the dripping of the lubricating solution onto the disc surface and the swaying of the liquid surface due to the drop of droplets from the disc hanger onto the surface of the lubricating solution. Can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the disc hanger of the present invention, and FIG. 2 is a front view thereof. Reference numeral 2 is a disc, and 3 is a disc opening. Since these are the same as those in the conventional example, description thereof will be omitted. 6 is a hanger holding member, 6a
Is a guide member for the lubricating solution formed under the hanger holding member 6, 7 is a disc receiving member, 8 is a disc locking member having a base fixed orthogonally on the guide member 6a of the hanger holding member 6, and 9 Is a disc hanger. The length L4 of the guide member 6a is preferably formed to be at least longer than the radius L3 of the disk 2 locked by the disk locking member 8, and the tip thereof is preferably formed in an acute angle. In the case of the immersion type in which the disc hanger 9 is put in and taken out from the lubricating solution 5, when the disc hanger 9 is pulled up from the lubricant container 4, ripples on the liquid surface generated by the drop of droplets from the lower end to the surface of the lubricating solution 5 Disk 2
This is to prevent it from hitting the surface of the and inhibiting the uniform formation of the lubricating film. The shape of the guide member 6a is preferably formed into an acute angle so that the surface tension can concentrate the droplets at an early stage to accelerate the drainage and improve workability. The guide member 6a may be formed integrally with the hanger holding member 6, or may be detachably formed so that it can be appropriately changed according to the size of the diameter of the disk 2. The disc locking member 8 has a disc receiving member 7 which is inert to the lubricating solution on its upper surface,
It is preferable to form the disc receiving groove at a predetermined position because the disc can be locked uniformly and quickly. In this embodiment, the disk receiving members 7 are arranged in parallel in two rows on the upper surface of the disk locking member 8, and the disk receiving members 7 are formed so as not to come into contact with the disks other than these two positions. I was able to speed up.

The disc locking member 8 has a diameter smaller than that of the disc opening 3, and the lower surface thereof is in the range of 0 ° to 45 ° with the horizontal plane.
At the angle of, it is formed by inclining upward as it goes to the tip,
Moreover, since the diameter L2 at the tip is formed smaller than the diameter L1 at the base, the lubricating solution 5 on the surface of the disk receiving member 7 and the disk locking member 8 can be smoothly guided to the guide member 6a by gravity and surface tension. Was quickly returned to the container 4.

The operation of the disc hanger constructed as described above will be described below with reference to FIG.

FIG. 3 is a diagram showing a usage state of the disc hanger in the embodiment of the present invention. Disc hangers 9 to 9
When the discs 2 are locked, immersed in the lubricating solution 5, and then the disc hanger 9 is pulled up, the lubricating solution 5 smoothly flows along the disc locking member 8 as indicated by an arrow in the figure, While being pulled up, the droplets of the lubricating solution 5 did not drip from the disc locking member 8 and were dropped into the solution while being guided by the guide member 6a. At the end of pulling up, since the guide member 6a of the droplet is longer than the radius of the disc 2, the solution flows from the guide member 6a, and the ripple of the solution caused by the drop of the droplet affects the thickness of the lubricant on the surface of the disc. It never happened.

[0015]

As described above, according to the present invention, the side shape is substantially T.
A disc-shaped hanger having a V-shape, a hanger holding member vertically arranged and integrally provided with a guide member at an end, or a hanger holding member separately provided, and a disc locking member provided above the guide member of the hanger holding member. Since it is configured to include a member, it is possible to prevent dripping of the lubricating solution from the disk hanger to the surface of the disk and swaying of the liquid surface due to the drop of droplets from the disk hanger to the surface of the lubricating solution. It is possible to form a lubricating film with a uniform thickness on the surface of, and it is possible to realize an excellent disc hanger that can mass-produce high-quality discs with good yield and low cost in a short time while using the same method as before. ..

[Brief description of drawings]

FIG. 1 is a side view of a disc hanger according to an embodiment of the present invention.

FIG. 2 is a front view of a disc hanger according to an embodiment of the present invention.

FIG. 3 is a usage state diagram of a disc hanger according to an embodiment of the present invention.

FIG. 4 (a) is a side view of a conventional disc hanger when immersed, and (b) is a front view thereof.

[Explanation of symbols]

 1 Disc Hanger of Conventional Example 2 Disc 3 Disc Opening 4 Container 5 Lubricating Solution 6 Hanger Holding Member 6a Guide Member 7 Disc Receiving Member 8 Disc Locking Member 9 Disc Hanger of this Example

Claims (1)

Claim: What is claimed is: 1. A disk hanger for holding the magnetic disk by an immersion type lubricant application device for applying a lubricant to the surface of the magnetic disk, the disk hanger being vertically arranged and guided at the end. The hanger holding member in which the members are integrally or separately arranged, and the inclination angle θ from the base to the tip is 0 ° <θ <45 °
A disc hanger having a lower surface that is formed to incline upward and is disposed substantially orthogonal to the upper part of the guide member of the hanger holding member.