JPS62154364A - Disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To bring a head into proper contact over the entire recording and playback areas on a disk by providing the disk with a stabilizing member and a movement path guide means. CONSTITUTION:An upper stabilizing plate 11 is a quadrilateral member having a recessed part 11a in the reverse surface and fixed to a device fixing part 1a so that it is put close to the surface of a magnetic disk. Then the stabilizing plate is so set previously as to have a tilt angle theta to a plane 14 crossing the axis 13 of rotation of the magnetic disk 12, and has a gentle upward slope along a direction in which it leaves the center of the rotating shaft of the magnetic disk 12. A lower stabilizing plate 15 is provided with a window hole 15a and the magnetic head 16 projects from this window hole 15a and contacts the magnetic disk 12. This lower stabilizing plate 15 is a joint part 15b formed in one body in parallel to the upper stabilizing plate 11 across the magnetic disk 12 and fixed to a head carriage 17. The head carriage 17 is guided by a guide member 21 to move up to the right.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a disk recording and reproducing apparatus that uses a flexible disk as a recording medium and records or reproduces various information such as image information, audio information, and numerical information.

"Prior Art" A recording/reproducing device using a flexible memory disk is widely known as, for example, a magnetic disk recording/reproducing device.

This type of recording/reproducing apparatus is configured to magnetically record and reproduce information by rotating a magnetic disk at high speed and scanning a recording/reproducing head along the radial direction of the disk.

Many of these recording/reproducing devices are equipped with a stabilizing plate that is placed close to the surface of the magnetic disk as a means to prevent unstable contact of the head due to vibrations of the magnetic disk or the like.

This stabilizer plate is provided on the opposite side of the recording/reproducing head across the magnetic disk, and is placed very close to the surface of the magnetic disk. Such a stabilizer plate can maintain stable rotation of the magnetic disk by airflow between it and the magnetic disk surface. In other words, when the magnetic disk rotates at high speed, a so-called negative pressure is generated by the airflow between the disk and the above-mentioned stabilizer plate, and the magnetic disk is drawn toward the stabilizer plate, and the magnetic disk is balanced with the elasticity of the magnetic disk. Rotate.

By bringing the head into contact with the disk portion that rotates stably in this manner, so-called spacing loss is prevented from occurring.

``Means for solving the problem'' In the case of the above-mentioned means of solving the spacing loss by using a stabilizer, the magnetic disk is partially attracted to the stabilizer, so that the magnetic disk is moved away from the stabilizer. It rotates with a curved surface deformed into a concave shape.

Therefore, if the recording/reproducing head is moved linearly in the radial direction of the magnetic disk, depending on the position of the head,
Spacing may occur between the head and the magnetic disk, reducing recording input or reproduction output, and eventually making recording or reproduction impossible.

Various products have been developed to solve these problems.
For example, a method has been proposed in which a stabilizing plate is tilted in conjunction with the linear movement of a recording/reproducing head, and the amount of deformation of the magnetic disk is corrected in accordance with the scanning position of the head. (Japanese Unexamined Patent Publication No. 6O-93674) This correction means uses a stabilizer plate to reduce the amount of deformation of the magnetic disk as the head moves toward the inner circumference of the magnetic disk and as the head moves toward the outer circumference of the disk. The inclination is changed to improve head contact.

However, with this correction means, the degree of inclination of the stabilizer must be finely adjusted in advance by taking into account the size and elasticity of the magnetic disk, and this fine adjustment becomes a very troublesome task. Even if the amount of deformation is reduced, as long as the head is moved linearly, contact spots on the head are likely to occur, and it is not sufficient to obtain uniform and good contact over the entire recording or reproducing area.

"Means for Solving the Problems" The present invention was researched and developed with the aim of solving the above problems, and uses a flexible disk as a recording medium, with a member that stabilizes the rotation of the disk facing the recording and reproducing head. In a recording/reproducing device installed near a disk surface, the stabilizing member is tilted with respect to a plane perpendicular to the rotational axis of the disk, and is provided so that the slope slopes upward in a direction away from the center of rotation of the disk. We propose a disk recording/reproducing apparatus comprising: and a moving path guide means for moving a recording/reproducing head along a moving path substantially parallel to the surface of the rotating disk.

In this invention, the rotation of the disk is kept stable by the stabilizing member, and the recording/reproducing head moves along the deformation of the disk by the stabilizing plate, so that the head can maintain appropriate contact over the entire recording or reproducing area of the disk. becomes.

"Example" Next, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a first embodiment of the present invention as a magnetic disk recording/reproducing device, FIG. 1 is a simplified perspective view showing the main parts of the invention, and FIG. 2 shows the main parts. It is a simplified cross-sectional view.

In these figures, 11 is the upper stabilizer, which is the first
As can be seen from the figure, it is a quadrilateral plate material with a recess 11a formed on the lower surface. This stabilizer plate 11 is fixed to the device fixing portion 1a so as to be close to the surface of the magnetic disk 12. When fixing this, the magnetic disk 12 is set in advance so as to have an inclination angle of θ with respect to the plane 14 perpendicular to the rotational axis 13.
No. 2 has a gentle upward slope along the direction away from the center of the rotation axis.

The magnetic disk 12 is disk-shaped with a center core 12a, and has a known configuration in which it rotates at high speed around a rotation axis 13.

Reference numeral 15 denotes a lower stabilizing plate, which is provided with a window hole 15a, through which the magnetic head 16 protrudes and comes into contact with the magnetic disk 12.

The lower stabilizer 15 includes a joint portion 15 that is integrally formed parallel to the upper stabilizer 11 with the magnetic disk 12 in between.
It is fixed to the head carriage 17 with b.

The magnetic head 16 is attached to a holder 16a, and this holder 163 is pivotally supported by a support shaft 18 which is supported by a protrusion provided on the lower surface of the lower stabilizer plate 15, so that it cannot rotate within the window hole 15a. Spring 1
It is receiving a turning force in the counterclockwise direction in FIG. 2 with a tensile force of 9.

A small screw 20 screwed into the joint 15b and having its tip abutted against the holder 16a is used to adjust the inclination of the magnetic head 16, and by screwing it in, it resists the turning force of the spring 19 of the magnetic head 16. Then turn clockwise in Figure 2.

The head carriage 17 is guided by the illustrated guide member 21 and moves in the left and right directions in FIG.

That is, guide protrusions 17a and 17b are provided on the side surface of the head carriage 17 and are slightly shifted vertically.
It is slidably inserted into 1a.

The guide member 21 is fixed to the device fixing part at an angle θ so that the elongated hole 21a is parallel to the upper stabilizing plate 11.

By advancing the lead screw 22 provided on the device fixing part 1b, the head carriage 17 configured as described above moves upward along the elongated hole 21a to the left in FIG. When the head carriage 17 is moved, it receives the tensile force of the spring 23 suspended between a part of the head carriage 17 and the device fixing part IC, and moves to the right in FIG. 2 while descending along the elongated hole 21a.

In the above-described first embodiment, as the magnetic disk 12 rotates at high speed, a portion of the disk 12 is attached to the upper stabilizer plate 11.
The magnetic disk 12 is drawn to the side and deformed upward into a concave shape, and as described above, the magnetic disk 12 rotates stably in the deformed state.

Further, since the head carriage 17 moves along the guide member 21 by moving the lead screw 22 back and forth, the magnetic head 16 moves in the radial direction of the magnetic disk 12.

Since the magnetic head 16 is moved in the radial direction of the magnetic disk 12 and at a predetermined slope by the guide member 21, the magnetic head 16 can correctly contact and scan the recording or reproducing surface of the deformed magnetic disk 12. ,
This good scanning is performed uniformly over the entire recording or reproducing carrier of the magnetic disk 12.

Further, if the small screw 20 is finely adjusted to appropriately determine the inclination of the magnetic head 16 in accordance with the deformation of the magnetic disk 12, a more effective contact state can be achieved in combination with the inclination movement of the magnetic head 16. This small screw 20 is also effective in that it can increase the allowance of contact between the magnetic disk 12 and the magnetic head 16.

The lower stabilizer plate 15 can generate a more stable airflow than when only the upper stabilizer plate 11 is provided, but
This can also be omitted.

Next, FIG. 3 shows a second embodiment of the present invention, and this embodiment is characterized in that the inclination angle of the upper stabilizing plate 11 is changed in accordance with the movement of the head carriage 17.

The upper stabilizing plate 24 of this embodiment is pivotably supported by a bearing provided on the device fixing part 1a, and its -
A sliding surface portion 24b extending linearly is provided on the side.

The stabilizing plate 24 is constantly given a counterclockwise turning force by the expansion force of a spring 25 provided between the stabilizing plate 24 and the device fixing part 1a.

The tip of a small screw 27 screwed onto the lower stabilizer plate 26 is brought into contact with the sliding surface portion 24b of the stabilizer plate 24, and the small screw 27 allows the upper stabilizer plate 24 to rotate counterclockwise. At the same time, this stabilizer plate 24 maintains a predetermined angle of inclination.

Further, the small screw 27 is used as an adjustment screw for finely adjusting the inclination angle of the upper stabilizing plate 24 according to the size and elasticity of the magnetic disk 12.

The rest of the structure is the same as that of the first embodiment, so the same parts and members are given the same reference numerals.

In this second embodiment, the sliding surface portion 24b is connected to the guide member 21.
If fine adjustment is made in advance so that it is parallel to the elongated hole 21a, and the upper stabilizer plate 24 is set to the slope shown in the figure, this stabilizer plate 2
The tilt angle 4 is kept constant regardless of the movement of the head carriage 17, and the operation is similar to that of the first embodiment.

By adjusting the small screw 27 and making the upper stabilizing plate 24 larger or smaller than the illustrated slope, the sliding surface portion 24b
is not parallel to the elongated hole 21a of the guide member 21, the inclination angle of the upper stabilizer plate 24 changes as the tip of the small screw 27 traces the sliding surface portion 24b due to the movement of the head carriage 17. Therefore, as the magnetic head 16 moves toward the inner or outer circumference of the magnetic disk 12, the amount of deformation of the magnetic disk 12 gradually increases or decreases. 16 contact degree can be increased.

In addition, regarding the surface of each stabilizer plate and the hole shape of the elongated hole 21a of the guide member 21 shown in the first embodiment and the second example, both the surface and the hole shape, or one of them, is similar to that of the magnetic disk 12.
If the sliding surface portion 24b of the second embodiment is formed into a curved surface in accordance with the deformation of the magnetic head 16, an even higher contact effect of the magnetic head 16 can be expected.

Effects of the Invention j As described above, in the present invention, an inclination angle is given to the stabilizing member that stabilizes the rotation of the disk, and the recording/reproducing head is moved to the disk recording surface or reproducing surface that is deformed by the stabilizing member. Since it is equipped with a moving path guiding means that scans almost in parallel, the contact state of the head with the disk is extremely good over the entire recording or reproduction carrier, and a high-precision disk recording and reproduction surface with almost no spacing loss is achieved. Can be provided.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention as a magnetic disk recording/reproducing device, FIG. 1 is a simplified perspective view showing the main parts of the invention, and FIG. 2 shows the main parts. Simplified sectional view, FIG. 3 is a simplified sectional view similar to FIG. 2 showing the second embodiment. 11... Upper stabilizer plate 12... Magnetic disk 1
3...Rotation axis 14...Plane 15...Lower stability t'& 16...Magnetic head 17...
Head carriage 17a, 17b...Guide protrusion 18...Spindle 2o...Small screw 21.
...Guide member 21a...Long hole 22...Lead screw 24...Upper stabilizer plate 24b...Sliding surface portion 26
...Lower stabilizer plate 27...Small screw.

Claims (3)

[Claims] (1) In a recording/reproducing device in which a flexible disk is used as a recording medium and a member for stabilizing disk rotation is provided near the disk surface facing a recording/reproducing head, the disk is tilted with respect to a plane perpendicular to the rotational axis of the disk. , a stabilizing member provided so that the inclination is upward in the direction away from the disk rotation center, and a moving path guide that moves the recording/reproducing head along a moving path that is approximately parallel to the rotating disk surface. A disc recording/reproducing device comprising means. (2) The disk recording and reproducing device according to claim (1), wherein the stabilizing member is fixed to the device fixing portion with an upwardly sloped inclination angle in advance. (3) The above-mentioned stabilizing member is rotatably attached to the device fixing part,
2. A disk recording and reproducing apparatus according to claim 1, wherein said moving route guide means is provided with an interlocking section that changes the tilt of said stabilizing member.