JPH05114229A - Stabilizing plate structure of head - Google Patents

Abstract

PURPOSE:To satisfactorily suck the circumferential side on at least a disk to a stabilizing plate and to ensure that a head comes into sure contact. CONSTITUTION:In the stabilizing plate structure of a head, individual suction faces 3a, 3b, 4a, 4b which are arranged and installed on the upstream side and the downstream side of the head 1 along the rotation direction of a disk 2 and which are faced with the disk 2 are formed on a slope which is gradually away from the disk as they advance from the upstream side to the downstream side. In the stabilizing plate structure, groove parts 5 which are more shallow than the suction faces 3b, 4b are formed, along the disk rotation direction V, in parts of the suction faces 3b, 4b which are situated on the inner circumferential side than a recording track region T on at least 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 flexible magnetic sheet-shaped disc used in an electronic still camera or the like,
The present invention relates to a stabilizer structure of a head which is brought into contact with a magnetic head by generating a negative pressure.

[0002]

2. Description of the Related Art Conventionally, a magnetic recording / reproducing apparatus has been used to perform magnetic recording or reproduction on a flexible disk used in, for example, an electronic still camera.
This magnetic recording / reproducing apparatus includes a magnetic head movably provided in the radial direction of the disk, and upstream and downstream stabilizers (pads) arranged upstream and downstream of the head. In each of the stabilizers, the suction surface facing the disk is formed as an inclined surface that is further away from the disk as it goes from the upstream side to the downstream side. Then, each of the upstream and downstream stabilizers, along with the rotation of the disk,
Due to the negative pressure generated between the disk and the stabilizer, the disk is attracted to the attraction surface side of the stabilizer so that the disk can be stably hit against the magnetic head. By the way, in these stabilizers, the suction surface facing the disc is formed as an inclined surface that is further away from the disc as it goes from the upstream side to the downstream side, and further away from the disc as it goes from the outer circumference side to the inner circumference side. (For example, Japanese Patent Laid-Open No. 2-126466), in particular, a larger negative pressure is generated on the inner circumference side of the disk than on the outer circumference side thereof, so that the disk can be more stably hit against the magnetic head. I have to.

[0003]

However, since the inner peripheral portion of the disc is fixed to the hub portion, the rigidity is higher toward the inner periphery and the amount of deformation is smaller, so that the disc moves from the outer peripheral side to the inner peripheral side. Accordingly, the size of the inclination angle of the conventional stabilizer formed away from the disk is naturally limited, and it is difficult to obtain a sufficient negative pressure amount. Even if a sufficient amount of negative pressure can be obtained on the inner peripheral side of the disk, the area of the suction surface formed on the inclined surface is spread over the entire stabilizer plate as in the conventional stabilizer described above. If the area is large, the amount of deformation on the inner peripheral side of the disk increases, which increases the load of spindle rotation of the disk drive and causes the disk to flap. Therefore, the present invention is
Without increasing the inclination angle of the surface of the stabilizer facing the inner circumference of the disc, at least the suction to the stabilizer on the inner circumference of the disc can be made good, and the spindle is rotated due to excessive deformation. It is an object of the present invention to provide a negative pressure generating head stabilizing plate structure that can obtain a stable head touch without increasing the load of the disk or fluttering the disk.

[0004]

The stabilizer structure of the present invention comprises:
Stabilization of the head, which is disposed on the upstream side and the downstream side of the head along the rotation direction of the disk, and the suction surfaces facing the disk are formed on the inclined surfaces that are distant from the disk from the upstream side to the downstream side. In the plate structure, a concave portion recessed from the suction surface is formed at least on the suction surface portion located on the inner peripheral side of the recording track area of the disc along the disc rotation direction.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a stabilizer structure of this embodiment, and 1 in the drawings shows a magnetic head. This magnetic head 1 is arranged below a flexible disk 2,
It is provided so as to be movable in the radial direction of the disk 2 by a head feeding device (not shown). In FIGS. 1 and 2, the double-dashed line arrow V indicates the rotation direction of the disk 2.
An upstream stabilizer 3 and a downstream stabilizer 4 are provided on the upstream side and the downstream side of the magnetic head 1 provided below the disk 2.

Each of the stabilizers 3 and 4 has an upper surface having suction surfaces 3a and 4a located on the outer peripheral side of the recording track area T of the disc 2 and suction surfaces 3b and 4b located on the inner peripheral side. The disk 2 is disposed so as to face the surface of the disk 2 and is fixed to a fixing portion (not shown). Further, as shown in FIG. 1, each of the stabilizers 3 and 4 has a predetermined length along the disk rotation direction V, a width wider than the recording track area T of the disk 2, and a large area. . Further, as shown in FIG. 2, the both stabilizers 3 and 4 are formed such that the suction surfaces 3a, 3b, 4a and 4b thereof are inclined surfaces that move away from the disc 2 from the upstream side to the downstream side. Suction surfaces 3a, 3b, 4a, 4 of the stabilizers 3, 4 of
The magnetic head 1 is provided so as to project from b.
In FIG. 2, reference numeral 2 denotes a stationary disk and 2A denotes a suction disk.

The suction surfaces 3a of the stabilizers 3 and 4 are
The suction surfaces 3a, 3b, 4a, 3b, 4a, 4b have
A groove portion 5 as a concave portion that is recessed one step from 4b is provided along the disk rotation direction V. Therefore, when the disc 2 rotates, a negative pressure is generated between the disc 2 and the suction surfaces 3a, 3b, 4a, 4b of the stabilizers 3, 4, and the negative pressure causes the disc 2 to be attracted to each suction surface side. However, between the bottom surface 5a of the groove portion 5 and the disc 2, a negative pressure larger than the negative pressure generation amount at the suction surfaces 3a, 3b, 4a, 4b is generated, so that suction is performed. Surface 3
Even if the inclination angles of a, 3b, 4a, 4b are not increased, the contact of the disk 2 with respect to the magnetic head 1 is ensured,
A more stable head touch can be obtained. Also,
The suction surface 3 of the stabilizers 3 and 4 corresponding to the inner circumference of the disk 2.
Since the inclination angles of b and 4b can be suppressed to be small, the distance between the suction surfaces 3a, 3b, 4a and 4b and the disk 2 does not become large, and the disk 2 is unduly deformed and the spindle rotation load is increased. It does not grow or the disc flakes.

In the present embodiment, the groove 5 is provided with the suction surfaces 3a and 4a of the stabilizers 3 and 4 located on the outer peripheral side of the recording track area T of the disk 2 and the stabilizer 3 located on the inner peripheral side. It is formed on the suction surfaces 3b and 4b of the disk 4. However, in general, the center part of the disk is held on the spindle side, and the rigidity becomes higher toward the inner circumference, so that the disk is located inside the recording track area T of the disk 2. The groove 5 may be formed only on the suction surfaces 3b and 4b of the stabilizers 3 and 4 located on the circumferential side. Further, in the present embodiment, the case where the suction surfaces 3a, 3b, 4a, 4b and the groove portion 5 are formed so as to face the portion deviating from the recording track area T of the disc 2 has been described.
The recording track area T may be formed in a portion facing the recording track area T.

[0009]

As described above, according to the present invention, since the recess is provided at least in the suction surface portion of the stabilizer located on the inner peripheral side of the recording track area of the disc, the recess along the disc rotation direction is provided. The amount of negative pressure generated in a portion can be increased more than the amount of negative pressure generated in the other suction surface portions, so that at least the inner circumferential side of the disc can be stabilized without increasing the inclination angle of the suction surface. It is possible to ensure good suction to the plate and ensure the contact of the disk with the magnetic head, and it is possible to obtain a more stable head touch. Further, since the concave portion is formed in a part of the suction surface of the stabilizer, compared to the case of forming an inclined surface having a large inclination angle over the whole, the disk is not unduly deformed, thus, It is possible to prevent the spindle rotation load from increasing and the disc from flapping.

[Brief description of drawings]

FIG. 1 is a plan view showing a structure of a stabilizer of a head according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line EE in FIG. 1 showing a stabilizing plate structure of the head.

[Explanation of symbols]

 1 Head 2 Disc 3,4 Stabilizer 3a, 3b, 4a, 4b Suction Surface 5 Groove (Recess) V Disc Rotation Direction

Claims (1)

[Claims] 1. A suction surface, which is arranged on the upstream side and the downstream side of the head along the rotation direction of the disk and faces each of the disks, is formed as an inclined surface which is distant from the disk from the upstream side to the downstream side. In the structure for stabilizing the head, a concave portion recessed from the suction surface is formed along at least the suction surface portion located on the inner peripheral side of the recording track area of the disk along the disk rotation direction. Stabilizer structure for the head.