JPS5819743Y2 - magnetic disk storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement of a magnetic disk storage device having a removable flexible magnetic disk. First, a conventional magnetic disk storage device will be explained with reference to FIGS. 1 to 3.

Fig. 1 is an external view showing the recording/reproducing mechanism of a conventional magnetic disk storage device, Fig. 2 is a side view for explaining the attachment and detachment of a conventional magnetic disk, and Fig. 3 is the same as Fig. 1 and Fig. 2. FIG. 2 is a schematic diagram of the magnetic disk shown in FIG.

In the figure, reference numeral 1 denotes a removable flexible magnetic disk having a recording surface A, which is positioned and fixed by a spindle pulley 2 and rotated at a constant rotational speed.

3 is a bridge that holds a magnet 4 and is opened and closed by a spring 7 by moving a panel 6 up and down using a support 5 as a fulcrum;
Reference numerals 17 and 17 denote disk guides that are fixed to the bridge 3 and are disposed along both sides of the lower surface of the bridge 3 at a predetermined distance from the bridge. , by the closing action of the bridge, the disk 1 on the guides 17, 17 is placed on the spindle pulley 2, and by the opening action, the disk 1 is removed from the spindle pulley 2.
It functions to lift up the

8 is a magnetic head for recording and reproducing information; 9 is a pad provided opposite to the magnetic head 8; 10 is a pad arm to which the pad 9 is attached; 11 is attached to the magnet 4; A lever 12 that raises or lowers the arm 10 is a carriage that holds the magnetic head 8 and pad arm 9, and is driven by a stepping motor 13 and a lead screw 14.

In such a configuration, the magnetic disk 1 is connected to the bridge 3.
and disk guide 17.17, and insert it between panel 6
When you move downward to close bridge 3,
The disk guide 1 also descends, and the disk 1 supported by the disk guide 17 is now supported by the spindle pulley 2.

Therefore, when recording and reproducing information, the magnet 4 works to lower the lever 11, and the pad arm 10 is also lowered accordingly. As a result, the pad 9 presses the recording surface A of the magnetic disk 1. Bring it into contact with the magnetic head 8.

On the other hand, when information is not recorded or reproduced in such a state, the magnet 4 works in the opposite way to the above and lifts the lever, and the lever also lifts the pad arm 10, so that the pad 9 is separated from the recording surface A of the magnetic disk 1. There will be no contact.

By the way, the installation and removal of the magnetic disk 1 is as shown in Fig. 2.
1. When the panel 6 is lifted upward, if the magnetic disk 1 is installed inside, the disk 1 is lifted upward by the disk guide 17.17 fixed to the bridge 3 and removed from the spindle pulley 2. The pad arm 10 is released by the lever 11 held on the bridge 3.
can be lifted in the same way.

In this state, by moving the magnetic disk 1 in and out in the direction of the arrow A9, it is attached to and detached from the space between the spindle pulley 2, the magnetic head 8, and the pad 9.

In this way, the attachment and detachment of the magnetic disk is carried out by inserting and removing the disk 1 along the disk guide 17.17, which is fixed to the bridge 3 and moves up and down together. Since the gap between the pad 9 lifted by the lever 3 and the pad 9 is only the amount of movement of the lever 11, the disc 1 will come into contact with the pad 9 when the disc is attached or removed, and the pad 9 or the disc itself may be damaged. There is.

In addition, by increasing the amount of movement of the lever 11 attached to the magnet 4, or by increasing the amount of movement of the lever 11 attached to the magnet 4,
If the opening angle between the pad 9 and the magnetic disk 1 is increased, the contact between the pad 9 and the magnetic disk 1 will be reduced, but due to the characteristics of the magnet 4, it is difficult to increase the amount of movement of the lever 11. The current situation is that the opening angle of the bridge cannot be made large.

This invention was made to improve such conventional problems, and the invention will be explained below based on the drawings.

FIG. 4 is a schematic view showing the recording/reproducing mechanism of the magnetic disk storage device according to this invention, and FIG. 5 is a side view for explaining the attachment and detachment of the magnetic disk according to this invention.

In these figures, 1-14 and 17, 17 are the same as those shown in FIGS. 1-3.

Reference numeral 15 denotes a protective guide member provided according to this invention, one end of which is attached to the support member 16 of the casing that houses the mechanism, and the tip of the member is bent to form the upper end facing the disk insertion slot. An inclined guide part 15a is formed, and the lower end of this inclined guide part 15a is positioned near the pad 9 so that it is at the same height as the pad 9 in the raised position or at a lower height. There is.

Next, the installation and removal of the magnetic disk according to this invention will be explained.

It is assumed here that the bridge 3 and pad arm 10 are lifted.

First, when the magnetic disk 1 is inserted in the direction of arrow A as shown in FIG.
The disc guide 17,1 is pushed down by the protective guide part 15.
7 (see FIG. 6), thereby ensuring that a gap is created between the pad 9 and the disk 1.

In this state, the pad 9 is inserted along the length direction of the protective guide member.
The disk 1 is guided and inserted between the magnetic head 8 and the magnetic head 8.

By moving the panel 6 downward and closing the bridge 3, the disk 1 is mounted on the spindle pulley 2.

When the disk 1 is attached to the spindle pulley 2, the disk 1 is descending downward, so the protective guide member 1
Since there is a gap between the protective guide member 15 and the lower end of the inclined guide member 5, the protective guide member 15 does not continue to push the disc 1.

The magnetic disk 1 is restored to its original flat state due to its flexibility.

As described above, when the flexible magnetic disk 1 is inserted in the direction of arrow A, the protective guide member 15 presses the disk 1 downward (in the direction away from the pad) and bends it.
This prevents contact with the pad 9.

On the other hand, when pulling out the disk 1, the bridge 3 is raised to separate the disk 1 from the spindle pulley 2, and when the disk 1 is then pulled out in the direction of the arrow, the area facing the pad 9 of the disk 1 is protected. While being pushed and bent by the guide member 15, it moves in the direction of the arrow and is extracted from between the pad 9 and the magnetic head 8.

Therefore, the protective guide member 15 holds the disk 1 downward and prevents it from coming into contact with the pad 9 even when the disk 1 is removed.

As mentioned above, this idea is useful when attaching or detaching a magnetic disk.
Since the portion of the magnetic disk facing the pad is bent slightly and a protective guide member is provided to prevent the disk from coming into contact with the pad, the disk will not come into contact with the pad when the magnetic disk is installed or removed. Therefore, there is an advantage that the life of the pad and the flexible magnetic disk is extended.

In the above embodiment, the member 15 is attached to the support member 16 of the casing, but it may be attached to a support member that supports a mechanical section, for example, and the attachment position may be at a location other than the movable part when the magnetic disk 1 is attached or detached. If there is, it is not limited to this.

The shape of the above-mentioned member 15 may be variously modified, such as a rod shape or a plate shape.

[Brief explanation of drawings]

FIG. 1 is an external view showing a conventional magnetic disk storage device, FIG. 2 is a side view for explaining the attachment and detachment of a conventional magnetic disk, and FIG. 3 is a schematic diagram of the magnetic disk shown in FIGS. 1 and 2. 4 is an external view showing a magnetic disk storage device according to this invention, FIG. 5 is a side view for explaining attachment and detachment of a magnetic disk according to this invention, and FIG. 6 is a VI-
It is a VI line enlarged sectional view. In the figure, 1 is a magnetic disk, 8 is a magnetic head, 9 is a pad, 10 is a pad arm, 12 is a carriage, 15 is a member, and 16 is a support member. Identical or equivalent parts in the figure are given the same reference numerals. This is an indication.

Claims (1)

[Scope of utility model registration request] A magnetic disk storage device comprising a detachable flexible magnetic disk, a magnetic head, a pad provided opposite to the magnetic head, a pad arm to which the pad is attached, and a carriage that holds the magnetic head and pad arm. A protective guide member is provided which bends a portion of the magnetic disk facing the pad to prevent the magnetic disk from coming into contact with the pad when the magnetic disk is attached or removed. Magnetic disk storage device.