JPH05266442A - Magnetic head unit - Google Patents

Abstract

PURPOSE:To thin and miniaturize a unit, to reduce its member cost and assembling man-hour, to shorten a magnetic circuit, as well and to improve noise resistance and recording/reproducing efficiency. CONSTITUTION:In the magnetic head unit provided with the magnetic head 19 processing information for a recording medium in a disk cartridge 1 through a head window 3 provided and opened on the disk cartridge 1 and a head supporting member supporting the magnetic head 19, the magnetic head 19 and the head supporting members 14, 15, 18 placed to the head window 3 part are formed so as to be housed in the head window 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head unit for recording / reproducing, erasing, etc. information on a recording medium contained in a disk cartridge.

[0002]

5 to 7 schematically show an example of a conventional magnetic head unit.

In the figure, reference numeral 1 is a disk cartridge having a substantially square planar shape, and a circular disk 2 serving as a recording medium is incorporated therein. Also,
On the upper and lower surfaces of the disc cartridge 1, head windows 3 and 3 having a substantially rectangular shape for performing processing such as recording and reproducing of information on the disc 2 are provided. Further, a shutter (not shown) for opening and closing both head windows 3, 3 is attached to the disc cartridge.

The conventional magnetic head unit for recording / reproducing information on / from the disk 2 uses a head carriage 4 and a head arm 5 made of synthetic resin and facing each other as a head supporting member. .. One head arm 5 is attached to the head carriage 4 in a cantilever shape by fixing a leaf spring 6 fixed to the base end portion thereof to the base portion of the other head carriage 4 via a set screw 7. There is. Magnetic heads 9 and 9 are mounted on the facing surfaces of the tips of the head carriage 4 and head arm 5 via gimbal plates 8 and 8 made of leaf springs, respectively. Further, arm drive means (not shown) for moving the head arm 5 up and down when the disk cartridge 1 is inserted and taken out is provided.

In the conventional magnetic head unit thus formed, the disk cartridge 1 is inserted while the head arm 5 is separated from the head carriage 4, and when the insertion is completed, the head arm 5 causes the arm driving means. Automatically approaches the direction of the head carriage 4, and as shown in FIGS. 6 and 7, the upper and lower magnetic heads 9 hold the disk 2 from above and below.

In this state, the magnetic heads 9 and 9 perform processing such as recording and reproducing of information on the disk 2.

[0007]

However, in the above-mentioned conventional example, the carriage 4, the head arm 5, and the gimbal plate 8 are formed to be larger than the lateral width W of the head window 3. This is a relatively large magnetic head 9
This is because the gimbal plate 8 is formed to be large in order to support it stably. Therefore, the carriage 4 and the head arm 5 have to be formed in a large size. Furthermore,
Since the carriage 4, the head arm 5 and the gimbal plate 8 are located outside the disk cartridge 1 in which the disk 2 is built, as shown in FIG. 7, the core portion of the magnetic head 9 is brought into contact with the disk 2. In order to enable processing such as recording / playback of information, the magnetic head 9
It was necessary to form a height H of at least 2.1 mm. Therefore, in order to enable the insertion / removal operation of the disk cartridge 1, the distance between the head arm 5 and the carriage 4 must be set to a large value, and the magnetic head unit and hence the flexible disk drive can be made thinner. There was a limit to miniaturization. Also,
Since the magnetic circuit formed by the magnetic head 9 is large, there are inconveniences such as poor noise resistance and poor recording / reproducing efficiency. Further, since the heavy magnetic head 9 and the head arm 5 have to be moved up and down largely,
When the head is loaded, the descending speed of the head arm 5 becomes high, the impact when the magnetic head 9 contacts the disk 2 as a recording medium becomes large, and the surface of the disk 2 is easily damaged.

The present invention has been made in view of these points. It is possible to make the device thinner and smaller than the conventional magnetic head, reduce the cost of members and the number of assembly steps, and reduce the size of the magnetic circuit. An object of the present invention is to provide a magnetic head unit capable of improving noise resistance and recording / reproducing efficiency.

[0009]

In order to solve the above-mentioned problems, a magnetic head unit of the present invention applies information processing to a recording medium in the disk cartridge through a head window provided in the disk cartridge. In a magnetic head unit having a magnetic head and a head supporting member for supporting the magnetic head, the magnetic head and the head supporting member located in the head window portion are formed in a shape that can be accommodated in the head window. To do.

[0010]

According to the present invention, the magnetic head and the head supporting member can be inserted into the head window of the disk cartridge, and the magnetic head can perform processing such as recording and reproducing of information on the recording medium.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention.
The same parts as the conventional ones are designated by the same reference numerals.

In the present embodiment, the magnetic head 1 located at the head window 3 portion of the disk cartridge 1.
9 and a carriage 14, which serves as a head support member for supporting the same, a head arm 15, and a ginddle plate 18.
Is formed into a shape that can be accommodated in the head window 3.

Specifically, as shown in FIGS. 1 to 4, the widths of the carriage 14, the head arm 15, the gimbal plate 18 and the magnetic head 19 are determined so as to be smaller than the lateral width W of the head window 3. Further, as shown in FIG. 3, the height h of the magnetic head 19 is reduced to, for example, 1.5 mm, and the carriage 14 and the head arm 15 are both 1 mm.
The overall configuration is thin, small and lightweight.
As shown in FIG. 2, the carriage 14 and the head arm 15
Is the base 1 of each base so that it is paired up and down.
3 is fixed by a set screw 17 and the tension spring 16
The magnetic heads 19 are formed so as to apply pressure contact elastic force to the disk 2 which is a recording medium.

Next, the operation of this embodiment will be described.

In this embodiment, since the magnetic head 19 and the head supporting member are formed so as to be housed in the head window 3 of the disk cartridge 1, the head arm 15 when the disk cartridge 1 is inserted and taken out.
The vertical movement of the can be suppressed to be small, and the whole can be made thin and compact.

Further, since the descending speed of the head arm 3 can be reduced, the impact at the time of contact of the magnetic head 19 with the recording medium disk 2 at the time of head loading is mitigated, and the surface of the recording medium 2 is damaged. Never give.

Further, the magnetic circuit can be reduced by simplifying, thinning and downsizing the entire structure, and noise resistance and recording / reproducing efficiency can be greatly improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and the technique of the present invention is applicable to various recording / reproducing devices other than the devices shown in the above embodiments. It is possible.

[0020]

Since the magnetic head unit of the present invention is constructed and operates as described above, the magnetic head unit can be made thinner and smaller than the conventional magnetic head, the cost of members and the number of assembling steps can be reduced, and the magnetic circuit can be reduced. It is also possible to reduce the noise, and it is possible to improve the noise resistance and the recording / reproducing efficiency.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a magnetic head unit of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an enlarged view of a magnetic head portion.

FIG. 4 is a perspective view of an essential part of the present invention.

FIG. 5 is a plan view of a conventional magnetic head unit.

6 is a front view of FIG.

FIG. 7 is a view similar to FIG. 3 of a conventional example.

[Explanation of symbols]

 1 disk cartridge 2 disk 3 head window 14 carriage 15 head arm 19 magnetic head

Claims (1)

[Claims] 1. A magnetic head unit having a magnetic head for performing information processing on a recording medium in the disk cartridge and a head supporting member for supporting the magnetic head over a head window provided in the disk cartridge. A magnetic head unit characterized in that the magnetic head and the head supporting member located in the head window portion are formed in a shape to be accommodated in the head window.