JPS6194267A - Separate blade of lamination type flexible disk device - Google Patents

Abstract

PURPOSE:To ensure the stable input/output of the record information and to prevent the damage of a disk by providing a flat part on the surface of a separate blade opposite to both recording sides of a disk and attaching a signal converter to said flat part. CONSTITUTION:A signal converter 12 is attached on the surface of a separate blade 11 opposite to the recording surface of a disk 2 and at a flat part 11A near the center of the blade 11 in the width direction (revolving direction of the disk 2). Then the curved surface parts 11B are provided at both sides of the part 11A. When the disk 2 runs on the surface of the blade 11 at a high speed U, a gap H formed between the surfaces of both parts 11B and 11A and the disk 2 is shown in the figure. In other words, the gap is constant at the part 11A at both sides of the converter 12 as if a fixed amount of tension were applied to the disk 2. Thus a minute gap H0 formed between the converter 12 and the disk 2 is constant. This ensures the satisfactory recording/ reproduction of information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a stacked flexible disk device, and more particularly to a separating blade for flexible disks.

[Background of the invention]

Conventional separating blades, as described in Japanese Patent Application Laid-Open No. 51-91408, have a better ability to attach any disc of a stack of flexible discs to the surface of the access arm and thus to the surface of the transducer. It was designed to follow. However, the gap between the surface of the converter and the disk is large, and no consideration has been given to performance in recording and reproducing at high linear recording densities. By using a grooved transducer, it is possible to create a minute gap, but this transducer is difficult to manufacture.

[Purpose of the invention]

The present invention has been made based on the above-mentioned problems, and an object of the present invention is to provide a separation blade that maintains a small and constant gap between a flexible disk and a signal converter and does not damage the disk. .

[Summary of the invention]

The flexible disk device includes a rotating body in which flexible disks are stacked. To write and read information to and from this flexible disk, air is ejected radially from the center of the rotating body to spread the outer edges of adjacent disks to form a wedge-shaped space, and a separation blade is inserted into this space. This is done by a signal converter inserted and provided separately from this separation blade.

When writing and reading this information, the gap between the flexible magnetic disk running on the signal converter and the signal converter is maintained constant, thereby stabilizing the input and output of recorded information during recording and playback. is necessary. Furthermore, the separation blade must have a shape that does not damage the disk.

The present invention is characterized in that a flat portion is provided on the surface of the separating blade facing the recording surface side of the disk, and the signal converter is attached to this flat portion to stabilize the input and output of recorded information and prevent damage to the disk. We have made sure that there is no such thing.

(Embodiments of R-light) Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The figure shows a stacked flexible disk device equipped with an embodiment of the separation blade of the present invention.

In the figure, 1 is a rotating body, and this rotating body 1 is composed of a plurality of flexible disks 2 stacked together.

The center of the shaft of the rotating body 1 is hollow.

The shaft of this rotating body 1 is directly connected to a motor 3. Further, the other hollow shaft 5 of the rotating body 1 is provided with a page selection device (not shown) for selecting the disk 2 and an air supply port 4 for separating the disk 2. A separation blade 11 according to the present invention is installed on the outer periphery of the rotating body 1.

This separating blade 11 is directly connected to a near motor that allows one forward and backward movement, and is further mounted on the head moving table 8. The head moving table 8 includes a zero-separation blade 11 that moves left and right as the screw shaft 7 is rotated by the stepping motor 6, and a signal converter that reads and writes information.

FIG. 2 shows one disk 2 and the separation blade 1 of the present invention.
1s place i! The 9-separation blade 11 shows the relationship:
It is provided with a mounting section 13 for mounting on the drive section and a signal converter 12 for reading and writing information. disc 2
rotates in the direction of the arrow in FIG.
is attached to the flat portion of the separation blade 11.

FIG. 3 shows how the separation blade 11 enters a rotating body in which spacers 14 and disks 2 are alternately stacked, and the signal converter 12 reads and writes information.

FIG. 4 is a plan view of the separating blade 11 of the present invention,
The mounting of the signal converter 12 indicates the position. That is,
On the surface of the separation blade facing the recording surface of the disk, the signal converter 12 is installed near the center (flat portion 11A) of the separation blade 11 in the width direction (rotation direction of the disk).
is installed. Further, curved surface portions 11B are provided on both sides of this flat portion.

FIG. 5 shows the structural shape of the 0-separation blade 11, which is one of the embodiments and shows a cross-sectional view of the separation blade and the disk taken along line 10-10 in FIG. 4. This will be explained using figures.

As described above, the surface of the separation blade 1 facing the recording surface of the disk 2 is composed of a flat portion 11A and a curved surface 11B (radius of curvature Rm=250+u+). Also, the opposite surface 11G has a radius of curvature Rc = 300 mm
It is made up of circular arcs. A signal converter 12 is provided at the center of the flat portion 11A.

FIG. 6 is a side view of the separation blade 11, and in this embodiment, the protrusion amount a of the signal converter 12 is approximately 85 mm from the flat portion 11A.
It is μm. FIG. 7 is an enlarged view of the vicinity of the tip of the separation blade 11. The angle d at the tip of this separation blade 11 is 5
．． 5' Also, the angle C near the signal converter is 2.5°, and these two angles are formed in a wedge shape connected by a radius of curvature g (C400 mm). With such a shape, when inserted between the disks, the tip of the one-separation blade does not come into contact with the disk, and the disk is not damaged.

Next, the operation of the separating blade of the present invention described above will be explained using FIG. 5.

When the disk 2 runs at high speed on the surface of the separating blade 11 at a speed U as shown in the upper diagram of FIG. 5, this surface (
The gap H formed between the curved surface portion 11B, flat portion 11A) and the disk 2 is as shown in the diagram in FIG. That is, in the flat portions 11A on both sides of the signal converter 12, the gap is constant, as if a constant tension was applied to the disk. Therefore, the minute gap H0 between the signal converter 2 and the disk 2 remains constant, allowing good recording and reproduction of information. This minute gap H0 is between the signal converter 1
It is possible to control by adjusting the width of the left and right flat portions 11A of 2. If this flying height H0 is positive,
The disk 2 runs in a non-contact state with respect to the signal converter 12. Therefore, it is possible to prevent damage to the disk. Moreover, even without using the grooved signal converter 12, it is possible to record and reproduce information favorably using the conventional curved signal converter 12.

〔Effect of the invention〕

As detailed above, according to the present invention, it is possible to maintain a small distance between the signal converter on the separation blade and the disk, so it is possible to stabilize the recording and reproduction of information by the signal converter. This has the effect of improving the performance of a flexible disk device without damaging the disk.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flexible disk device equipped with an embodiment of the separation blade of the present invention, and FIG.
Figure 3 is a diagram showing the positional relationship between the flexible disks and the separating blade; Figure 3 is a diagram showing the separating blade entering the stacked flexible disks in Figure 1; Figure 6 is a diagram showing the separating blade in Figure 4; The side view, FIG. 7, is an enlarged view of the vicinity of the tip of the separating blade in FIG. 4. 1...Rotating body, 2...Protspi disk, 3...
motor. 11... Separation blade, 12... Signal converter. 3rd eye, Figure 4

Claims (1)

[Claims] In a flexible disk device that records and reproduces information on the flexible disk by inserting a separating blade having a signal converter between stacked flexible disks, the separating blade has a recording surface side of the flexible disk and a recording surface side of the flexible disk. 1. A separating blade for a flexible disk device, characterized in that a flat portion is provided on opposing surfaces, and the signal converter is attached to the flat portion.