JPS6252778A - Floppy disc device - Google Patents

Abstract

PURPOSE:To stably generate a pressing force alone required for a magnetic recording and reproducing only at the periphery of a recording and reproducing part by positioning a pair of pressing bodies at the front and the rear of a magnetic head in the rotating direction of a magnetic recording medium at the both sides of an aperture part. CONSTITUTION:A magnetic head 14 comes in from the aperture part 16 of a jacket 10 and makes contact with a magnetic recording medium 13. The magnetic recording medium 13 is pressed and bent by the magnetic head 14, however, the magnetic head 14, being supported by a pair of pads 15, continues to be in contact with the magnetic recording medium 13 by the deformation resistance of the magnetic recording medium 13. Thereby, it is evaded that an unnecessary pressing force is applied on a part other than the recording and reproducing part of the magnetic head by the pressing body causing the deterioration of performance, and also, a good recording and reproducing characteristic and a travelling performance can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floppy disk device capable of magnetically recording information on a disk-shaped magnetic recording medium or reproducing information recorded from the magnetic recording medium.

BACKGROUND OF THE INVENTION A conventional floppy disk device, as shown in FIGS. 6 and 7, has a spindle 2 and an arm 4 with a magnetic head 3 attached to the tip thereof, which are rotatably mounted on a pace 1. Furthermore, a floppy disk 5 is removably attached to the spindle 2. The floppy disk 6 consists of a magnetic distribution medium 6 and a jacket 7 that houses the magnetic recording medium 6. The jacket 7 is provided with an opening 9 through which the magnetic head 3 enters and comes into contact with the magnetic recording medium 6. ing. Inside the jacket 7 is a pad 8 which is a pressing body for pressing the magnetic recording medium e to bring the magnetic recording medium 6 into contact with the magnetic head 3. They are located at opposite positions.

Problems to be Solved by the Invention However, in the above configuration, the magnetic head 3 and the pad 8 are located at opposing positions with the magnetic recording medium 6 in between. This has the disadvantage that an unnecessarily large pressing force is generated on the magnetic recording medium 6, causing scratches on the magnetic recording medium 6, or that the originally required pressing force on the magnetic head section is reduced, which tends to deteriorate the recording and reproducing performance. was.

SUMMARY OF THE INVENTION In view of the above drawbacks, the present invention provides a floppy disk device that applies an appropriate pressing force to the recording/reproducing section of a magnetic head and prevents performance deterioration even for a magnetic head having a minute recording/reproducing section.

Means for Solving the Problems The present invention provides a magnetic recording medium, a jacket that houses the magnetic recording medium and has an opening on one or both sides for the magnetic head to come into contact with the magnetic recording medium, and the opening. It consists of a pair of pressing bodies disposed inside the jacket on opposite sides of the jacket to press the magnetic recording medium into contact with the magnetic head, and a spindle to which the jacket is removably attached.

Function: The pair of pressing bodies of the present invention are located on both sides of the opening, and are located in front and behind the magnetic head with respect to the rotational direction of the magnetic recording medium, thereby preventing the magnetic recording medium from being pressed against the magnetic head. is only the deformation resistance of the magnetic recording medium, and as a result, unnecessary pressing force is removed from the magnetic head, and only the pressing force originally necessary for magnetic recording and reproduction can be stably generated only around the recording and reproduction section. This has the effect of greatly improving recording and reproducing performance.

EXAMPLE A first example of the present invention will be described below with reference to the drawings. FIG. 1 shows a longitudinal sectional front view of a floppy disk device according to a first embodiment of the present invention. A spindle 11 to which the jacket 10 can be detachably attached.
An arm 12 connected to a magnetic head 14 is provided so as to be movable in the radial direction of the magnetic recording medium 13.

A magnetic recording medium 13 is stored in the jacket 1Q,
Further, an opening 16 through which the magnetic head 14 enters the jacket 1o is provided on one side, and a pair of pads (pressing pads) for pressing the magnetic recording medium 13 against the magnetic head 14 are provided inside the other side. body) 16 is the opening 16
0 are provided at opposing positions on both sides (Fig. 2).

The operation of the floppy disk device configured as described above will be explained below.

First, the magnetic helad 14 enters through the opening 16 of the jacket 10 and comes into contact with the magnetic recording medium 13 . As shown in FIG. 3, the magnetic recording medium 13 bends due to being pressed by the magnetic field 14, but is supported by a pair of magnetic fields 15, and the magnetic head 14 performs magnetic recording due to the deformation resistance of the magnetic recording medium 13. Since it continues to be in contact with the media 13, unnecessary pressing force is not applied by a pressing body to areas other than the recording/reproducing part of the magnetic head unlike in the conventional example, resulting in performance deterioration, and good distributed reproduction is achieved. Characteristics and driving performance can be obtained.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a longitudinal sectional side view of a floppy disk device showing a second embodiment of the present invention. In the same figure, 11
14 is a spindle, and 14 is a magnetic head, which is the same as the configuration shown in FIG. 4. The difference from FIG. 4 is that a magnetic recording medium 13 that can be used on both sides is housed in the jacket 10, and openings 16 are provided on both sides for the magnetic head 14 to come into contact with the magnetic recording medium 13, and the magnetic recording media 1
3 to magnetic head 1jl: band 1 which is a pressing body to suppress
6 are provided in pairs on each side of the inside of the jacket 1o.

The openings 16 provided on both sides of the jacket 10 are the openings 16 on the top surface when viewed from the top of the jacket 10.
In this embodiment, even if the pad 16 is in a position where the opening 1e on the lower surface overlaps, that is, in the configuration of a conventional floppy disk device, the pad 16 is attached even if the position and the opening 1e overlap. It is possible to attach the pad 16 (FIG. 5). Moreover, no matter which side of the magnetic recording medium 13 the magnetic head 14 is pressed against, the magnetic head 14 and the magnetic recording medium 13 often come into contact only due to the deformation resistance of the magnetic recording medium 13.

As described above, by providing the pads 16 in the positions in front and rear of the magnetic head 14 in the direction of rotation of the magnetic recording medium 13, the jacket 1
It is possible to provide the pad 15 even if the openings 16 on both sides of the o are overlapped when viewed from one side, and even if the pad 14 enters the magnetic field from either side, the magnetic recording medium 13 is It is possible to make contact with only the deformation resistance, and good recording and reproducing characteristics can be obtained.

Note that in these embodiments, the pair of pads 15 are located parallel to each other, but it goes without saying that they may be located non-parallel to each other.

In addition, the pad throat 15, which is a pressing body, was provided separately from the jacket 10, but a punched protrusion was formed by stamping the jacket 1o, and this was used as a pressing body to combine the jacket 1o and the pressing body. It may be formed integrally.

Furthermore, in the second embodiment, the shape of the opening 1e provided in the jacket 1° may be changed to a rectangular shape, an arc shape, etc. depending on the position of the pad 16, etc. The position of the opening 16 may be determined so that the opening 16 is located at the same position as before even if the upper and lower surfaces of the jacket 1o are reversed.

Effects of the Invention Since the present invention has all the effects of the above-mentioned configuration 1, it is possible to always apply an appropriate pressing force to the magnetic recording/reproducing section of the magnetic recording medium and bring the magnetic recording medium into contact with the magnetic recording medium, and the recording/reproducing characteristics are good and the durability is good. This has the advantage that it is possible to provide an excellent floppy disk device.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of a floppy disk device according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional side view of the floppy disk, FIG. 3 is an enlarged sectional view of the vicinity of the magnetic head, and FIG. 4 6 is a longitudinal sectional side view of a floppy disk device according to a second embodiment of the present invention, FIG. 6 is a plan view of the floppy disk, FIG. 6 is a longitudinal sectional front view of a conventional example, and FIG. 7 is an enlarged longitudinal sectional side view thereof. It is. 11... Spindle, 13... Magnetic recording medium, 14... Magnetic head, 15...
. . . Pressing body, 16 . . . Opening. Name of agent: Patent attorney Toshio Nakao and 1 other person14
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Claims (1)

[Claims] a magnetic recording medium; a jacket that houses the magnetic recording medium and has an opening on one or both sides for the magnetic head to come into contact with the magnetic recording medium; A floppy disk device comprising: a pair of pressing bodies provided within a jacket to press the magnetic head into contact with the magnetic head; and a spindle to which the jacket is removably attached.