JP2021064429A - Magnetic data erasing apparatus - Google Patents

Abstract

To provide a compact and light-weight magnetic data erasing apparatus without enlarging the apparatus, the magnetic data erasing apparatus using a permanent magnet to erase magnetic data recorded in magnetic recording media such as hard disks.SOLUTION: There is provided a magnetic data erasing apparatus for erasing magnetic data recorded in magnetic recording media, the magnetic data erasing apparatus comprising: a rotary table including a plurality of magnetic recording medium storage pockets in which magnetic recording media are stored; a magnetic recording medium loading unit for loading magnetic recording media in the plurality of magnetic recording medium storage pockets of the rotary table; a drive motor for rotatingly driving the rotary table; a magnetic circuit using a permanent magnet to erase magnetic data of a magnetic recording medium to be conveyed according to the rotation of the rotary table; and a magnetic recording medium discharge unit for discharging the magnetic recording medium, the data of which has been erased.SELECTED DRAWING: Figure 1

Description

The present invention relates to a magnetic data erasing device that erases magnetic data recorded on a magnetic recording medium.

Today, for example, a magnetic disk device (hereinafter referred to as a hard disk (HDD)) is widely used as a magnetic recording medium, and when a hard disk used by a company or an individual is discarded, the information recorded on the hard disk is transmitted to a third party. Since it is unknown, it is formatted from the operating system while connected to the computer to erase the magnetic information. However, in the above erasing method, only the management area for managing the arrangement of magnetic information in the hard disk is erased, and the actual magnetic information remains on the disk.

Therefore, for example, a method is used in which a strong magnetic field is generated by an electromagnet, the hard disk is passed through the magnetic field, and the information recorded on the hard disk is surely erased. However, in an electromagnet, a coil is wound around a ferromagnetic material such as a silicon steel plate, and a large current charged in the capacitor is passed through the coil to generate a strong magnetic field, so that it takes time to charge the capacitor. Further, since a large current is passed through the coil, a cooling time is also required. For example, one data erasure process requires several tens of seconds or more, which is not suitable for continuous work.

Therefore, a magnetic data erasing device has been proposed in which a permanent magnet is used instead of an electromagnet to erase magnetic data recorded on a magnetic recording medium such as a hard disk.

For example, the invention of Patent Document 1 shown in FIG. 4 is an example of a magnetic data erasing device using a permanent magnet 42, and magnetic data recorded on a magnetic recording medium B such as a hard disk, a floppy disk, or a CD-R can be stored. A processing chamber A for degaussing is provided, and stainless steel doors 40 and 41, which are non-magnetic materials, are provided at the inlet and outlet of the magnetic recording medium B to the processing chamber A.

Then, the magnetic recording medium B conveyed by the loader (belt conveyor) 50 is carried into the processing chamber A by opening the door 40 upward, and the magnetism recorded on the magnetic recording medium B by the magnets 42 installed above and below. Erase the data. After that, the magnetic recording medium B is further conveyed by the conveyor (belt conveyor) 51, and discharged to the storage box 60 by the unloader (belt conveyor) 52 through the door 41 opened upward.

Japanese Unexamined Patent Publication No. 2004-303284

However, in the conventional magnetic data erasing device, the magnetic recording medium B is conveyed by using three belt conveyors, that is, a loader 50, a conveyor 51, and an unloader 52, and the magnetic data is erased in the processing chamber A. Because of this, the equipment becomes large. Further, since it is necessary to provide a motor drive mechanism for driving three belt conveyors, the weight of the device is further increased. Further, it is difficult to stably pass the magnetic recording medium B through the gap between the magnets. For example, the magnetic recording medium B is clogged in the apparatus, and maintenance is required each time.

Therefore, the present invention provides a magnetic data erasing device that erases data recorded on a magnetic recording medium such as a hard disk using a permanent magnet, and provides a compact and lightweight magnetic data erasing device without increasing the size of the device. It is something to do. Further, the data erasing of the magnetic recording medium such as a hard disk can be continuously stably performed, and the data erasing work of the magnetic recording medium can be efficiently performed.

According to the present invention, the above-mentioned problems are a rotary table provided with a plurality of magnetic recording medium storage pockets for storing a magnetic recording medium, and a magnetic recording medium charging unit for charging the magnetic recording medium into the plurality of magnetic recording medium storage pockets. A magnetic circuit using a drive motor for rotationally driving the rotary table, a permanent magnet for erasing the magnetic data of the magnetic recording medium conveyed according to the rotation of the rotary table, and a magnetic recording medium from which the data has been erased. This can be achieved by providing a magnetic data erasing device including a magnetic recording medium discharging unit for discharging.

Further, the magnetic recording medium is, for example, a hard disk, and the drive motor is provided, for example, in the vicinity of the outer periphery of the rotary table, and the rotary table is rotationally driven via a gear that meshes with the outer peripheral surface of the rotary table. It is a feature. Further, on the upper surface and the lower surface of the rotary table, a non-rotating table having the same disk shape as the rotary table and having the same size is provided, and after data is erased through an opening provided in the non-rotating table on the lower surface. The magnetic recording medium of the above is discharged.

Further, a camera is provided at the insertion port of the magnetic recording medium, and the magnetic recording medium input to the apparatus is photographed to acquire management information. Further, a printing unit is provided in the vicinity of the magnetic recording medium discharging unit, and the magnetic recording medium discharged from the discharging unit to the outside is printed with data erasure processing.

It is external drawing of the magnetic data erasure apparatus of this embodiment. It is a figure explaining the internal structure of the magnetic data erasure apparatus of this embodiment. It is a figure explaining the insertion state of the hard disk to the insertion port of the magnetic data erasure device. It is a figure explaining the conventional magnetic data erasure apparatus.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external view of the magnetic data erasure device of the present embodiment. The magnetic data erasure device shown in the figure describes an example of data erasure of a hard disk as a magnetic recording medium, for example. However, the magnetic data erasure device of the present invention is not limited to a hard disk, and of course, it is an invention of a data erasure device for a floppy disk, a magnetic recording medium such as a CD-ROM, or a CD-R.

In the figure, a hard disk slot 11 having a shape corresponding to the outer shape of the hard disk is provided in front of the magnetic data erasure device 10 of this example, and a hard disk (HDD) that needs to be erased is loaded. Further, an operation lamp 12 is provided on the right side of the inlet 11, and an emergency switch 13 is provided on the left side of the inlet 11. The operation lamp 12 is also a button to be operated after the hard disk is inserted from the insertion port 11, and the emergency switch 13 is an emergency stop button of the device.

Further, an operation panel 14 and a touch panel 15 are provided on the front step portion of the magnetic data erasure device 10 of this example. The operation panel 14 is composed of an operation switch (operation switch) 14a, a manual switch (manual SW) 14b, and a payout switch (payout SW) 14c. Further, a power switch (power switch) 16 is provided on the left side surface of the magnetic data erasure device 10 of this example, and a hard disk discharge port 17 on which data erasure processing has been performed is provided.

Further, a handle insertion port 18 is provided on the upper surface of the magnetic data erasure device 10. For example, when a power source cannot be used, a handle (not shown) is inserted into the handle insertion port 18 and a rotary table described later is manually rotated. It is a structure that can be used.
The adjuster 19 provided on the lower surface of the magnetic data erasure device 10 is for adjustment when the main body device is installed.

FIG. 2 is a diagram illustrating the internal structure of the magnetic data erasure device 10 of this example.
The magnetic data erasing device 10 of this example includes a magnetic circuit 20 for erasing magnetic data, a rotary table 21 provided with a pocket for storing a hard disk inserted from the above-mentioned input port 11, and a drive motor unit in which a drive motor is housed. 22. It is composed of an HDD discharge unit 23 that discharges a hard disk from which magnetic data has been erased, and various holding members and mounting members that attach the above-mentioned parts to the main body of the apparatus.

The rotary table 21 has a donut shape having a predetermined thickness, does not have a central axis for miniaturization of the device, and rotates by the driving force of the drive motor via a gear meshing with the outer peripheral surface. A part of the magnetic circuit 20 is arranged at the center of the rotary table 21.

The rotary table 21 is provided with one or more HDD transport pockets 27. An example will be described in which the magnetic data erasure device 10 of this example is provided with four HDD transport pockets 27 at regular intervals. The depth of the HDD transport pocket 27, that is, the thickness of the rotary table 21, is substantially the same as the thickness of the hard disk for erasing data, and is configured to suppress rattling and violence when being carried into the magnetic circuit 20 described later. Is.

Further, the arrangement position of the HDD transport pocket 27 on the rotary table 21 is arranged at a position where the hard disk can be efficiently inserted from the insertion port 11, the standby, the data is erased, and the hard disk is ejected. .. When erasing data from hard disks of different sizes, a dedicated attachment is inserted to fill the space in the HDD transport pocket 27.

Further, since the rotary table 21 passes through a strong magnetic field excited by the magnetic circuit 20, it is made of a non-magnetic material such as stainless steel (SUS) or a resin material.

On the other hand, fixed tables (not shown) having a predetermined thickness and having the same outer shape are provided above and below the rotary table 21, and this fixed table is also made of stainless steel, which is a non-magnetic material, in order to prevent the influence of a magnetic field. It is composed of (SUS) and a resin material. When the hard disk stored in the HDD transport pocket 27 is transported, the upper and lower surfaces of the hard disk come into contact with the upper and lower fixed tables, so that a material that is particularly smooth and slippery and a material with low friction is used. For example, a coating treatment such as Teflon (registered trademark) processing is applied. With this configuration, the hard disk stored in the HDD transport pocket 27 can be smoothly transported with low torque.

The rotary drive of the rotary table 21 is performed by a drive motor (not shown) provided in the drive motor unit 22, and specifically, the rotational force of the drive gear directly connected to the rotary shaft of the drive motor is meshed with the drive gear. It is transmitted to the outer gear, and the outer gear is driven by meshing with the gear 21a formed on the outer periphery of the rotary table 21. Four auxiliary rollers 28 are provided on the outer circumference of the rotary table 21 at equal intervals to maintain smooth rotation of the rotary table 21.

The magnetic circuit 20 includes the central portion of the donut-shaped rotary table 21 as described above, and has a structure that covers a part of the rotary table 21 rotating in the direction of the arrow (hereinafter referred to as part A), and has a permanent magnet inside. It is arranged and constitutes a magnetic circuit that forms a loop magnetic field in the A portion of the rotary table 21. For example, permanent magnets are arranged at the upper part and the lower part of the magnetic circuit 20 of FIG. 2, the upper and lower permanent magnets are attached to a magnetic material such as a silicon steel plate or a silicon steel strip, and a loop magnetic field is applied to the A part of the rotary table 21. Generate.

The HDD discharge unit 23 is provided on the right side surface of the magnetic data erasure device 10 of this example, and has a structure for discharging a hard disk falling from an opening (not shown) provided on the lower surface of the rotary table 21 to the outside.

The magnetic circuit 20, the rotary table 21, and the drive motor unit 22 are mounted on the intermediate base plate 29 in the magnetic data erasure device 10 via a plurality of spacers, and the intermediate base plate 29 has a plurality of columns 30. Is attached to the base plate 31 by.

In the magnetic data erasure device 10 having the above configuration, the data erasure process of the hard disk is performed as follows.
First, as shown in FIG. 3, the hard disk 33 for erasing the magnetic data is carried to the insertion port 11 of the magnetic data erasing device 10 and is inserted from the insertion port 11 into the HDD transport pocket 27 of the rotary table 21. Then, the operation lamp 12 provided in the magnetic data erasure device 10 is pressed to drive the drive motor, and the rotary table 21 is rotationally driven in the direction of the arrow shown in FIG.

The drive motor is, for example, a stepping motor. The rotary table 21 stops driving when it rotates 1/4, and the hard disk is repeatedly inserted from the slot 11 into the HDD transport pocket 27 every time the rotary table 21 rotates 1/4. .. The hard disk 33 inserted in the HDD transport pocket 27 is sequentially transported to the position of the magnetic circuit 20 according to the rotation of the rotary table 21.

The above-mentioned loop magnetic field is formed in the magnetic circuit 20 by a permanent magnet, and when the hard disk 33 inserted in the HDD transport pocket 27 passes through the A portion formed by the magnetic circuit 20, the magnetic data of the hard disk 33 is generated by the strong magnetic field. Is erased. At this time, as described above, the hard disk inserted in the HDD transport pocket 27 is smoothly transported in contact with the upper and lower low-friction fixed tables, and there is no rattling or violence, and reliable data erasure processing is performed.

After that, the hard disk from which the data has been erased is discharged to the outside through the opening provided in the fixed table on the lower surface of the rotary table 21 via the HDD discharge unit 23 as the rotary table 21 rotates.

As described above, according to the magnetic data erasure device 10 of this example, the hard disk inserted in the HDD transport pocket 27 is smoothly rotated and transported in contact with the upper and lower low friction fixed tables, and there is no rattling or rampage. Data can be erased reliably. Further, by driving the rotary table 21 with a small outer gear that meshes with the outer periphery of the rotary table 21, for example, the torque is much smaller than when the rotary table 21 is rotated by using a drive motor in the center. The rotary table 21 can be rotated.

Further, the magnetic data erasing device 10 of this example can form a closed-loop magnetic circuit 20 by forming a part of the magnetic circuit 20 at the center of the rotary table 21 so as to cover a part (part A) of the rotary table 21. Therefore, data can be erased efficiently and the device can be miniaturized. In particular, the rotary table 21 is provided with the HDD transport pocket 27, and the hard disk is rotationally moved to transport the hard disk to the magnetic circuit 20. The device can be downsized as compared with the conventional belt conveyor system. Further, a large motor for driving the belt conveyor is not required, and the weight of the device can be reduced.

Further, all the components of the magnetic data erasure device 10 of this example can be divided. For example, the rotary table 21 can be easily assembled by sandwiching and combining the magnetic circuit 20, and the donut-shaped rotary table 21 can be assembled. It can also be assembled.

Further, according to the magnetic data erasure device 10 of this example, even when the power supply cannot be used, the rotary table 21 can be manually rotated by inserting a handle (not shown) into the handle insertion port 18. However, in this case, the power supply circuit is cut off in order to prevent the generation of counter electromotive force.

Although the magnetic data erasure device 10 of the present invention has been described above, the present invention is not limited to the above embodiment. For example, a robot is used, a hard disk is inserted into the HDD transport pocket 27, and human labor is used. It is also possible to automatically continuously insert the hard disk into the HDD transport pocket 27 without having to do so.

In this case, a camera is further attached to the robot or the HDD transport pocket 27, and information on the product to be erased is collected by reading the information on the product label, for example, and whether or not the product can be erased is determined and the discharge work is managed through, for example, a network. be able to.

Further, by attaching a small laser printer or an inkjet printer to the HDD ejection unit 23 described above, printing such as data erasure processing is performed on the ejected hard disk, the hard disk whose data has been erased is clarified, and the data erasure work is performed. You can do it for sure.

According to the above embodiment, the data erasure process of the hard disk has been described as the magnetic recording medium, but it goes without saying that the present invention can be similarly applied to a floppy disk and a magnetic recording medium such as a CD-ROM or a CD-R. Is. In this case, the shape of the HDD transport pocket 27 provided on the rotary table 21 is a shape corresponding to the shape of the target magnetic recording medium.

10 ... Magnetic data erasure device 11 ... Input port 12 ... Operation lamp 13 ... Emergency switch 14 ... Operation panel 14a ... Operation switch (operation SW)
14b ... Manual switch (manual SW)
14c ... Payout switch (Payout SW)
15 ... Touch panel 16 ... Power switch (power switch)
17 ・ ・ Hard disk outlet 18 ・ ・ Handle insertion port 19 ・ ・ Adjuster 20 ・ ・ Magnetic circuit 21 ・ ・ Rotating table 21a ・ ・ Gear 22 ・ ・ Drive motor unit 23 ・ ・ HDD discharge unit 27 ・ ・ HDD transport pocket 28 ... Auxiliary roller 29 ... Intermediate base plate 30 ... Support 31 ... Base plate 33 ... Hard disk

Claims (5)

A rotary table with multiple magnetic recording medium storage pockets for storing magnetic recording media,
A magnetic recording medium charging unit for charging the magnetic recording medium into a plurality of magnetic recording medium storage pockets of the rotary table, and a magnetic recording medium charging unit.
A drive motor that rotationally drives the rotary table and
A magnetic circuit using a permanent magnet that erases the magnetic data of the magnetic recording medium conveyed according to the rotation of the rotary table, and
A magnetic recording medium discharging unit that discharges a magnetic recording medium whose data has been erased by the magnetic circuit, and a magnetic recording medium discharging unit.
A magnetic data erasure device characterized by being equipped with. The magnetic data erasure device according to claim 1, wherein the magnetic recording medium is a hard disk. A non-rotating table having the same disk shape as the rotary table and the same size is provided on the upper and lower surfaces of the rotary table, and after data is erased through an opening provided in the non-rotating table on the lower surface. The magnetic data erasing device according to claim 1 or 2, wherein the magnetic recording medium is discharged. The magnetic data erasure according to claim 1, 2 or 3, wherein a camera is provided at the insertion port of the magnetic recording medium, and the magnetic recording medium input to the apparatus is photographed to acquire management information. apparatus. Claims 1, 2, 3, a printing unit is provided in the vicinity of the magnetic recording medium discharging unit, and data erasure-processed printing is performed on the magnetic recording medium discharged from the discharging unit to the outside. Or the magnetic data erasing device according to 4.

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