JPH0525081Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" 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.

In such a recording/reproducing device, as a means of preventing unstable head contact caused by vibrations of the magnetic disk, etc., the head is brought close to one side of the magnetic disk 1, as shown in FIGS. 7 to 9. Stabilizer plate 2
Many have the following.

This stabilizer plate 2 is provided on the opposite side of the recording/reproducing head 3 with the magnetic disk 1 in between, and is placed extremely close to the magnetic disk surface. Such a stabilizer plate 2 can keep the rotation of the magnetic disk 1 stable by the air flow between it and the magnetic disk surface.
That is, when the magnetic disk 1 rotates at high speed, a positive pressure is generated by the air flow between the disk and the stabilizer plate 2, and the magnetic disk 1 rotates in a state that is in balance with the elasticity of the magnetic disk 1.

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

"Problem to be solved by the invention" With the above-mentioned stabilizer 2, in a disk in which the diameter of the center core 4 is large compared to the disk diameter, such as a steel video floppy disk,
Since the rigidity of the disk on the inner circumference side is significantly different from that on the outer circumference side, it is difficult to perform uniform recording and reproduction from the inner circumference to the outer circumference. In particular, in a disk recording and reproduction device in which two gaps are arranged in one recording and reproduction head 3, such as a disk recording and reproduction device for an electronic still camera, the influence of the difference in rigidity is noticeable.

In order to solve this problem, a convex portion 2a is provided on the outer circumference of the stabilizer plate 2 as shown in FIG. In some cases, the width of the concave groove 2b provided along the moving area of the recording/reproducing head 3 becomes narrower toward the outer periphery to prevent the recording/reproducing head 3 from being pinched.

However, even with the stabilizer plate 2 having the above-mentioned shape, the problem of uneven recording and reproduction caused by the above-mentioned difference in rigidity cannot be satisfactorily solved.

Therefore, in view of the above problems, the present invention has been developed by forming the shape of the stabilizer plate appropriately so that the airflow between the magnetic disk surface and the magnetic disk surface can keep the rotation of the magnetic disk stable. It is an object of the present invention to provide a disk recording and reproducing device that can absorb the difference in rigidity of the disk and perform uniform recording and reproducing.

"Means for Solving the Problems" In order to achieve the above object, the disk recording and reproducing apparatus according to the present invention uses a flexible disk as a recording medium, and a stable member for rotating the disk holds the disk in between to record the data. In a disk recording and reproducing device that is installed near a disk surface facing a reproducing head, a concave groove portion along the moving area of the recording and reproducing head is formed on the surface of the stable member facing the disk; The surfaces facing the disk located on both sides of the groove are used as a receiving surface and a sending surface with respect to the rotational direction of the disk, and these receiving surfaces and sending surfaces are oriented from the inner circumferential side of the disk to the outer circumferential side and toward the disk side. It is characterized in that it is formed as an inclined surface that leans toward one side, and that the receiving surface is formed as an inclined surface that leans toward the disk side as it moves from the receiving portion toward the groove, and the delivery surface moves toward the sending portion from the groove.

"Function" Due to the inclination in the disk rotation direction formed on each of the receiving surface and the sending surface, when the disk rotates at high speed, a stable air flow is generated between the disk and the above-mentioned stabilizing member, and the disk and the recording/reproducing head are The disc can be brought into contact with a predetermined pressure, and the bulge of the disc when the recording/reproducing head is brought into pressure contact with the disc can be released by the groove. The inclinations formed on each of the receiving surface and the sending surface from the inner circumferential side of the disk toward the outer circumferential side allow the disk and the recording/reproducing head to be aligned at predetermined positions at each position during the movement of the recording/reproducing head. Contact can be made with pressure, and uniform recording and reproduction can be performed.

"Embodiment" Hereinafter, a disk recording/reproducing apparatus according to the present invention will be described based on the illustrated embodiment. FIG. 1 is a perspective view of the stabilizing member 10 facing the disk 11 (see FIG. 5), and the upper front side of the figure is located on the inner peripheral side of the disk 11. A recording/reproducing head 12 is located approximately in the center of this stable member 10.
A concave groove portion 13 is formed along the moving area of the disk (see FIG. 5), and the recording/reproducing head 12 is connected to the disk 11.
The concave groove portion 13 allows the bulge of the disk 11 that occurs when pressed against the disk to be released.

The disk 11 rotates relative to the stabilizing member 10 in the direction indicated by arrow P in FIG. 2a. Note that FIG. 2a is a sectional view taken along the line A--A in FIG. 1. Among the surfaces of the stabilizing member 10 facing the disk 11 with respect to the rotational direction, the surface on the upper side in the rotational direction of the disk 11 (the upper right surface in FIG. 1) is the receiving surface 14, and the surface on the lower side in the rotational direction (the first The left side in the figure is defined as the delivery surface 15.

3 and 4 respectively show the above-mentioned stabilizing member 1.
As shown in these figures, both the receiving surface 14 and the sending surface 15 are formed into inclined surfaces such that the outer peripheral side of the stabilizing member 10 is thicker.

Furthermore, as shown in FIGS. 2a to 2c,
The receiving surface 14 is formed into an inclined surface that is thicker on the groove 13 side as it goes from the receiving portion 14a toward the groove 13,
The delivery surface 15 is formed into an inclined surface that extends from the concave groove portion 13 side toward the delivery portion 15a and is thicker on the delivery portion 15a side.

Further, the inner peripheral end 14b of the receiving portion 14a of the receiving surface 14 and the inner peripheral end 15b of the sending portion 15a of the sending surface 15 are chamfered as appropriate.

As shown in FIG.
The recording/reproducing head 12 is provided opposite to the recording/reproducing head 2.
A lower stabilizing member 16 having a surface parallel to the receiving surface 14 and the sending surface 15 of the stabilizing member 10 is provided near the stabilizing member 10 .

In the disk recording and reproducing apparatus having the stable member 10 constructed as described above, the disk 11 is rotated by passing between the above-mentioned stable member 10 and the lower stable member 16. Since the receiving surface 14 and the sending surface 15 of the stabilizing member 10 are closer to the disk 11 on the downstream side than on the upstream side with respect to the rotational direction of the disk 11, the stabilizing member 10 and the disk 11
A stable air layer is formed between the two, improving recording and reproducing accuracy.

Furthermore, when the disk 11 rotates, it vibrates, and since the outer circumferential side has less rigidity than the inner circumferential side, the amplitude becomes larger. However, the stable member 1
Since the outer circumferential side of 0 is thicker and closer to the disk 11 than the inner circumferential side, the vibrations on the outer circumferential side and the vibrations on the inner circumferential side can be equally controlled, and the vibrations on the outer circumferential side can be controlled equally. Recording and playback are equalized across the sides.

In addition, in the stable member 10 of this embodiment, the receiving surface 1
Although the receiving surface 14 and the sending surface 15 are shown as planar inclined surfaces, as shown in FIG. The receiving surface 14 and the sending surface 15 may be tilted in the direction of rotation of the disk 11, and the receiving surface 14 and the sending surface 15 are not limited to having the same slope, but may be given an appropriate angular difference. .

"Effects of the Invention" As explained above, in the disk recording/reproducing device according to the invention, the surface of the stable member facing the recording/reproducing head is formed as a surface inclined in both the radial direction and rotational direction of the disk. Therefore, a stable air layer is formed to appropriately suppress vibrations on the disk surface, and uniform recording and reproduction can be performed from the inner circumference side to the outer circumference side of the disk. In particular, even in a disk recording and reproducing device in which two gaps are lined up in one recording and reproducing head, such as a disk recording and reproducing device for an electronic steal camera, each gap must be applied uniformly to the disk with a predetermined pressure. Since they can be brought into contact with each other, stable recording and reproduction can be performed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the surface of the stabilizing member facing the disk, FIG. 2c is a sectional view taken along line C-C, FIG. 3 is a left side view of the stabilizing member shown in FIG. 1, and FIG. 4 is a right side view of the stabilizing member shown in FIG. 5. 6 is a simplified side view showing the positional relationship of the stabilizing member, the disk, and the recording/reproducing head, FIG. 6 is a simplified side view similar to FIG. 5 showing another embodiment, and FIGS. 7 to 9 show the conventional example. , FIG. 7 is a perspective view showing the disk and the stabilizer, FIG. 8 is a perspective view of the stabilizer showing the surface facing the disk, and FIG. 9 is a diagram showing the positional relationship between the stabilizer, the disk, and the recording/reproducing head. A simplified side view and FIGS. 10 and 11 are perspective views of a stabilizer plate showing other conventional examples. 10... Stable member, 11... Disc, 12...
...recording/reproducing head, 13...concave groove, 14...
Receiving surface, 14a... Receiving part, 15... Sending surface, 1
5a... Sending section.

Claims (1)

[Scope of utility model registration request] In a disk recording and reproducing device in which a flexible disk is used as a recording medium and a member for stabilizing the rotation of the disk is provided near the surface of the disk facing a recording and reproducing head across the disk, a surface of the stable member facing the disk is provided. A concave groove is formed along the moving area of the recording/reproducing head, and the surfaces facing the disk located on both sides of the concave groove are used as a receiving surface and a sending surface in the rotational direction of the disk. The receiving surface is formed as an inclined surface that is biased toward the disk side from the inner circumferential side to the outer circumferential side of the disk, and the receiving surface is formed as an inclined surface that is oriented toward the concave groove portion from the receiving portion, and the delivery surface is formed as an inclined surface that is oriented toward the concave groove portion from the concave groove portion. 1. A disk recording and reproducing device characterized in that each slope is formed on a slope that leans toward the disk side.