JP2016110683A - Composite destructive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite destructive device capable of magnetically and physically destroying information stored in a hard disk device to make the stored information inaccessible.SOLUTION: A composite destructive device comprises, in order from the top of a housing 12 downward, a loading unit 14, a magnetic erasing unit 20, a physical destruction unit 24, and a discharge unit 16. A hard disk device 36 loaded in the loading unit 14 is physically destroyed in the physical destruction unit 24 after going through a magnetic erasure process in the magnetic erasing unit 20, and is discharged from the discharge unit 16. The magnetic erasure process involves exciting a coil 202 to generate a magnetic field of predetermined strength in a substantially vertical direction and applying the magnetic field to the loaded hard disk device 36 to erase magnetic information. The physical destruction process involves driving a hydraulic cylinder mechanism 240 to project a destruction piston rod which presses on and destroys the hard disk device 36 coming down from the magnetic erasing unit 20.SELECTED DRAWING: Figure 2

Description

The present invention relates to a composite destruction device that prevents information leakage by magnetically and physically destroying information recorded on a magnetic recording medium to be discarded, and in particular, magnetically erases information recorded on a hard disk device. In addition, the present invention relates to a combined destruction device that physically destroys the hard disk device to make it impossible to access recorded information.

  Since a hard disk drive (HDD: Hard Disk Drive) mounted on a computer can contain a large amount of confidential information, leakage of the stored information has become a problem from the viewpoint of security when the hard disk device is discarded.

  When discarding a hard disk drive, it is basic to delete the stored information, but erasing the stored information by software is not only time consuming and time consuming, but also the stored information must be stored so that it is virtually unreadable. It is not always easy to erase completely, and it is not easy to confirm that the stored information is completely erased.

  In order to erase information recorded on a hard disk device by an electric method or a magnetic method, a magnetic field is generated in a state where the hard disk device is inserted in a coil for generating a magnetic field, and the retained information is magnetized. By applying a magnetic field obliquely to a hard disk device (for example, Patent Document 1) or a hard disk device, the stored information is magnetically stored regardless of whether the hard disk device is a horizontal magnetic recording method or a perpendicular magnetic recording method. An apparatus that can be erased easily (Patent Document 2) has been put into practical use.

  However, if the erasing process is performed by an electrical method or a magnetic method, it is impossible to determine whether the stored information has been completely erased only by the appearance of the hard disk device. Become.

  On the other hand, the hard disk device itself is destroyed by a physical method. The hydraulic cylinder mechanism is driven by a hydraulic pump, and the recorded information is reliably destroyed by a plurality of piston rods provided with conical breaking tools at the tips. A hydraulic breaker that renders it unreadable has been proposed (Patent Document 3), and has already been established in the market as a means for preventing information leakage when the hard disk drive is discarded.

  When destroying a hard disk device with such a destructive device, the housing of the hard disk device is usually used in Japan so that each member after the destructive process can be recycled, so that the hard disk device after the destructive process can be easily disassembled. The base member (generally made of aluminum die-casting) is used for a breakage technique in which an internal platter is deformed or perforated from the cover member side without being broken.

  On the other hand, when priority is given to the ease of confirming whether a hard disk device is destroyed or unprocessed rather than recyclability, in particular in the United States, a destructive method that folds the hard disk device together with the base member is adopted. Also, the presence or absence of the destruction treatment can be easily visually recognized (for example, Patent Document 4).

Further, a method has been proposed in which recording data of an optical recording medium such as a CD-ROM as well as a magnetic recording medium such as a hard disk device cannot be read by using both a magnetic method and a physical method (Patent Document). 5).

Utility Model Registration No. 3088608 JP 2009-004022 A JP 2004-316841 A Utility Model Registration No. 3192452 JP 2006-147044 A

  However, in recent years, security requirements have become more severe, and a combined destruction method in which information recorded on a discarded hard disk device is magnetically erased (destroyed) and then the hard disk device is physically destroyed. May be recommended.

  In particular, government agencies in the United States may require physical destruction using a technique that bends the hard disk device together with the base member in addition to magnetic destruction. In this case, there is a problem in that not only the number of man-hours for the destruction process increases, but also the cost and installation space for preparing both devices are required.

The present invention has been made in view of such problems, and physically erases information recorded in the hard disk device by a single device and physically folds the hard disk device together with the base member. An object of the present invention is to provide a composite destruction device that destroys and makes access to recorded information impossible.

  In order to achieve this object, the composite breaker according to the present invention is configured as follows.

[Basic structure]
The present invention relates to a composite destructive apparatus that magnetically and physically destroys information recorded on a magnetic recording medium, and includes an input unit that inputs a rectangular thick plate-shaped magnetic recording medium from above, and a lower part of the input unit A magnetic erasure unit that magnetically erases the magnetic recording medium that has been lowered from the input unit, a physical destruction unit that is disposed below the magnetic erasure unit and that physically destroys the magnetic recording medium that has been lowered from the magnetic erasure unit, and And a discharge unit that discharges the magnetic recording medium that has been lowered from the physical destruction unit.The magnetic erasing process generates a magnetic field having a predetermined intensity in a substantially vertical direction by exciting the coil. The magnetic information is erased by applying a magnetic field to the magnetic recording medium lowered from the loading section, and the physical destruction process is performed by driving the hydraulic cylinder mechanism to project the destruction piston rod and descending from the magnetic erasing section. Magnetic The recording medium is characterized in that destroy pressed by the destruction piston rod.

[Magnetic eraser]
The magnetic erasure unit is formed of a non-magnetic material in a rectangular tube shape, and includes a container that accommodates the magnetic recording medium introduced from the upper end opening located below the input unit and holds it in the air core of the coil. And a container that holds the magnetic recording medium introduced by closing the lower end opening at a predetermined angle with respect to the magnetic field direction, and the magnetic recording medium held by opening the lower end opening to the physical destruction part. The lowering position can be moved to the lowering position, and moves to the lowering position after completion of the magnetic erasing process at the holding position.

[Physical destruction section]
The physical destruction part is arranged with an upper opening and a lower opening on the piston rod projecting side of the hydraulic cylinder mechanism, and introduces the magnetic recording medium lowered from the lower end opening of the container from the upper opening. A destruction treatment chamber to be accommodated, and a movable bottom plate that opens and closes a lower opening of the destruction treatment chamber, and the hydraulic cylinder mechanism has a plurality of cylinders in which the oil chambers communicate with each other arranged in a straight line in the vertical direction, Insert the piston rod for destruction into the cylinders other than the bottom, and insert the opening / closing piston rod that moves the movable bottom plate to the open position when protruding, and the movable bottom plate projects the opening / closing piston rod. It is held in the closed position until the start, moves to the open position in conjunction with the protruding movement of the open / close piston rod, maintains the open position without interlocking with the retracting movement of the open / close piston rod, and opens and closes the open / close piston rod. De is entering and leaving the magnetic recording medium becomes possible return to the closed position after the drop.

  Here, the piston rod for opening and closing moves the movable bottom plate to the open position while preventing the magnetic recording medium housed in the destruction processing chamber from descending when protruding.

[Container]
The container arranges the rotation shaft at a position closer to the upper end opening than the lower end opening, a holding position where the lower end opening faces the closing member, and a lowering where the lower end opening faces the upper opening of the destruction processing chamber Swings between positions.

[Pressure plate]
In addition, the physical destruction part is disposed opposite to the piston rod protruding side of the destruction treatment chamber by forming a concave shape with the arrangement lines of the plurality of cylinders as symmetry axes, and the destruction treatment chamber is against the pressure of the destruction piston rod. And a pressure receiving plate for supporting the magnetic recording medium accommodated in the concave top surface.

  Here, the pressure receiving plate has a concave shape formed in two stages, and supports the magnetic recording medium accommodated in the destruction processing chamber on the first top surface or the second top surface of the two-stage concave shape.

[Positioning mechanism]
The physical destruction unit includes a positioning mechanism that opposes the center line in the introduction direction of the magnetic recording medium introduced from the upper opening to the arrangement lines of the plurality of cylinders and moves the magnetic recording medium to the pressure receiving plate side. .

[Destruction processing mode]
Further, the magnetic recording medium accommodated in the container is moved to the lowering position by moving the container to the lowered position with the movable bottom plate closed after completion of the magnetic erasing process, and is lowered to the discharge part after the physical destruction process is completed. In the combined destruction mode, in the state where the movable bottom plate is opened after the magnetic erasure processing is completed, the container is moved to the lowered position and lowered to the discharge portion, and the movable bottom plate is closed without performing the magnetic erasure processing. And a physical destruction mode in which the container is moved to the lowering position, lowered to the physical destruction portion, and lowered to the discharge portion after completion of the physical destruction treatment, and any one of the composite destruction mode, the magnetic erasure mode, and the physical destruction mode Select to destroy.

[Case]
The composite destructive device of the present invention includes a casing whose internal space is divided into three layers in the vertical direction. The casing includes an input part and a magnetic erasing part in an upper layer, a physical destruction part in an intermediate layer, and a discharge part in a lower layer. A hydraulic pump device that supplies hydraulic pressure to the hydraulic cylinder mechanism is arranged.

[Discharge part]
Here, the ejecting unit can be installed by selecting either a storage box for temporarily storing the magnetic recording medium lowered from the physical destruction unit or an inclined platform for ejecting the magnetic recording medium to the front of the housing.

[Magnetic recording medium]
In the present invention, the magnetic recording medium is a hard disk device.

[Continuous processing]
In the magnetic erasing process, the accumulated charge of the capacitor is discharged into the coil to be excited, and immediately after the discharge, the charging circuit is driven to start charging the capacitor.

[Troubleshooting]
The container moves to the holding position after the physical destruction process.

[Basic structure]
According to the composite destructive device of the present invention, a loading unit, a magnetic erasing unit, a physical destructing unit, and a discharging unit are arranged from the top to the bottom of the housing, and the hard disk device loaded from the loading unit is predetermined by the magnetic erasing unit. After erasing magnetic information by applying a strong magnetic field, the destruction piston rod of the hydraulic cylinder mechanism is pushed and destroyed in the physical destruction part and destroyed and ejected from the ejection part. The recorded information can be erased magnetically and the hard disk device can be physically destroyed to make it impossible to access the recorded information.

  In addition, the housing is divided into three layers in the vertical direction, the input part and the magnetic erasure part in the upper layer, the physical destruction part in the intermediate layer, and the discharge part in the lower layer, and from the physical destruction part to the physical destruction part By performing the movement to the discharge unit by the gravity acting on the hard disk device, each destruction process of the hard disk device can be sequentially performed without requiring a complicated transport mechanism.

[Magnetic erase]
The magnetic erasure unit of the present invention accommodates the hard disk device in a container disposed in the air core portion of the coil and holds it at a predetermined angle with respect to the direction of the magnetic field generated by the excitation of the coil. A magnetic field can be applied at a predetermined angle (obliquely) with respect to the surface, and the recorded information can be erased regardless of whether the hard disk device to be destroyed is a horizontal magnetic recording system or a perpendicular magnetic recording system.

[Physical destruction]
The physical destruction part of the present invention includes a pressure receiving plate on a piston rod protruding side of a hydraulic cylinder mechanism in which a plurality of cylinders are arranged in a straight line in the vertical direction, and a concave portion of the pressure receiving plate formed with a plurality of cylinder arrangement lines as symmetrical axes. By placing the hard disk device on the top surface of the shape and pressing with a plurality of piston rods for destruction, the hard disk device can be bent and broken together with the base member.

  In addition, the concave shape of the pressure receiving plate is formed in two steps, the hard disk device is supported by the first top surface or the second top surface of the two-step concave shape, and a plurality of center lines in the introduction direction of the hard disk device are provided by the positioning mechanism. By facing the arrangement line of the cylinder, it is possible to bend and destroy the hard disk devices of different sizes together with the base member.

[Destruction processing mode]
The composite destruction apparatus of the present invention includes a composite destruction mode in which a magnetic erasure process and a physical destruction process are continuously performed, a magnetic erasure mode in which only a magnetic erasure process is performed, and a physical destruction mode in which only a physical destruction process is performed. By selecting one mode and destroying it, you can deal with various destruction applications (recycling, disposal, etc.), and you can choose whether to prioritize security or processing speed and perform destruction processing. it can.

[Continuous processing]
In the magnetic erasure process, when the destruction process including the magnetic erasure process is continuously performed, the charging circuit is immediately discharged without waiting for the next magnetic erasure process to start after discharging the accumulated charge of the capacitor to the coil. By driving and starting charging of the capacitor, it is possible to shorten the time (time required for charging) from when the start switch is pressed until discharging is performed.

[Troubleshooting]
The container of the magnetic erasure unit does not immediately return to the holding position after completion of the magnetic erasing process, but returns to the holding position after the physical destruction process, so that the hard disk device after the physical destruction process is transferred from the physical destruction part to the ejection part. When it does not descend normally, the operator can open the door of the input part and push the hard disk device in the physical destruction part to the discharge part from the input port through the internal cavity of the container.

FIG. 2 is an external view showing an embodiment of a combined destruction apparatus according to the present invention. Side view showing the outline of the internal structure of the combined fracture device of FIG. FIG. 1 is a plan view showing an outline of the internal structure of the combined destruction apparatus of FIG. FIG. 2 and FIG. 3 are explanatory views showing the embodiment of the magnetic erasure unit and the process of performing the magnetic erasure process Explanatory drawing which shows embodiment of the physical destruction part of FIG.2 and FIG.3 Explanatory drawing which shows the accommodation process of the physical destruction process in the physical destruction part of FIG. Explanatory drawing which shows the destruction process of the physical destruction process in the physical destruction part of FIG. Explanatory drawing which shows the discharge process of the physical destruction process in the physical destruction part of FIG. The perspective view which shows embodiment of the pressure receiving plate of FIG. 5, and other embodiment. The perspective view which shows embodiment (a storage box and a tilting stand) of the discharge part of FIG. Flow chart showing an outline of destruction processing according to the present invention The flowchart which showed the outline | summary of the magnetic erasing process of FIG. Flowchart showing an outline of the physical destruction process of FIG. The flowchart which showed the outline | summary of the destruction process by multiple modes of this invention Flow chart showing the outline of continuous destruction processing including magnetic erasure processing The flowchart which showed the outline | summary of the charging process of FIG.

  Hereinafter, an embodiment of a combined destruction apparatus according to the present invention will be described with reference to the drawings showing the configuration and the like of a hard disk device as an example of a magnetic recording medium. As used in this application, “upper surface” and “lower surface”, “upper” and “lower”, “upper” and “lower”, “upper” and “lower”, etc. are installed with a combined destruction device. The direction (vertical relationship) in the used state is shown.

[Appearance of compound destruction device]
FIG. 1 is a perspective view showing an appearance of an embodiment of a combined destruction apparatus according to the present invention. As shown in FIG. 1, the combined destruction device 10 includes a loading unit 14 that loads a hard disk device to be broken on the upper surface 120 of the housing 12, a discharge unit 16 that takes out the broken hard disk device on the front surface 122 of the housing 12, The operation unit 18 is provided on the inclined surface 124 of the housing 12.

  The loading unit 14 opens and closes a loading port 140 for loading the hard disk device by a door 142, and the discharging unit 16 inserts and mounts a storage box 162 from which the hard disk device after destruction is discharged from the discharging port 160, and performs a destruction process. Later, the storage box 162 is pulled forward to take out the hard disk device.

  The door 142 is provided with a lock mechanism (not shown) that is automatically locked when closed, and is unlocked when the unlocking switch 144 is operated and is not under destruction processing. Accidents that are open to the public are prevented.

  The operation unit 18 includes a display panel 180 for displaying the operation state of the combined destruction device 10 and various warnings, a power switch 182, a start switch 184 for starting destruction processing, and an emergency stop switch 186 for stopping destruction processing in an emergency. A setting switch 188 is provided for selecting the display contents of the display panel 180 and setting a destruction processing mode to be described later. Further, a touch panel capable of setting the display panel 180 without providing the setting switch 188 may be used.

  Although the housing 12 is not provided in the present embodiment, a carrying handle may be provided on the top surface 120, rubber legs, casters, etc. may be provided on the bottom surface, and the inclined surface 124 is not formed. In addition, the operation unit 18 may be provided on the upper surface 120 or the front surface 122.

[Internal structure of compound destruction device]
FIG. 2 shows, as an outline of the internal structure of the combined destruction apparatus 10 in FIG. 1, a state before the destruction process is started after the hard disk device 36 is inserted from the insertion port 140 and the door 142 is closed. FIG. 5 is a side view seen from the left side through the left side surface 126 of the housing 12.

  As shown in FIG. 2, the housing 12 is provided with an upper partition wall 128 and a lower partition wall 130 that divide the interior into three levels in the vertical direction. 20 and the magnetic erasure control unit 22, the intermediate layer between the upper partition wall 128 and the lower partition wall 130 is a physical destruction unit 24 and a physical destruction control unit 32, and the lower layer below the lower partition wall 130 is a discharge unit 16 and A hydraulic pump device 34 is arranged.

  The hydraulic pump device 34 includes a pump mechanism unit 340, a tank unit 342, and an electric motor 344. The tank unit 342 includes a sealed rubber tank in which hydraulic oil is stored, and the pump mechanism unit 340 includes double-acting control. For use, an electromagnetic valve 346 (two-position two-way valve) and pressure switches 348 and 350 are mounted.

  The closing unit 14 is provided with a closing detection switch 150 that detects whether or not the door 142 is normally closed, and the discharge unit 16 is provided with a mounting detection switch that detects whether or not the storage box 162 is normally mounted. 166 is provided.

  3 is a plan view showing an outline of the internal structure of the composite destructive device 10 of FIG. 1. FIG. 3A shows the magnetic erasing unit 20 arranged in the upper layer of FIG. 2, and FIG. The physical destruction unit 24 arranged in the intermediate layer is shown, and the magnetic erasure control unit 22 and the physical destruction control unit 32 are omitted.

  As shown in FIG. 2 and FIG. 3A, the magnetic erasure unit 20 swings the coil unit 200 that generates a magnetic field for magnetic erasure, the hard disk device 36 that magnetically erases, and the container 208. The magnetic erasure control unit 22 includes a power source unit 220, a circuit unit 222, and capacitors 224 and 226.

  The coil unit 200 includes a coil 202, a bobbin 204, and a magnetic shield 206. The coil 202 is excited by the magnetic erasure control unit 22 to generate a magnetic field having a predetermined intensity in a substantially vertical direction (up and down direction in FIG. 2). The magnetic information recorded on the hard disk device 36 in the container 208 disposed in the air core is erased.

  2 and 3B, the physical destruction unit 24 includes a hydraulic cylinder mechanism 240, a destruction processing chamber 280, and a solenoid 298. The physical destruction control unit 32 includes a power supply unit 320 and a circuit unit 322. It has.

  The destruction processing chamber 280 includes a piston receiving plate 258, a pressure receiving plate 286, and horizontal plates 288 and 290 of the hydraulic cylinder mechanism 240. Inside, the hard disk device 36 lowered from the magnetic erasing unit 20 is stored in the predetermined pressure receiving plate 286. Leaf springs 302, 304, 306, and 308 are provided as the positioning mechanism 300 for positioning the position.

  Pressurized hydraulic oil is supplied to the hydraulic cylinder mechanism 240 via the hydraulic hoses 352 and 354 and the hose connection joints 272 and 274 from the hydraulic pump device 34 controlled by the physical destruction control unit 32, and the destruction treatment chamber 280. Physically destroy the hard disk drive inside.

[Overview of combined destruction processing]
When the hard disk device 36 to be destroyed is inserted into the container 208 by opening the door 142 and the start switch 184 is operated after the door 142 is closed, the coil 202 is excited by the magnetic erasure control unit 22 to execute the magnetic erasure process. When the solenoid 216 is driven after the magnetic erasure is completed and the container 208 is moved to the lowered position, the magnetically erased hard disk device 36 is lowered into the destruction processing chamber 280 (falls by its own weight).

  When the hard disk device 36 is accommodated in the destruction processing chamber 280, the hydraulic cylinder mechanism 240 is driven by the physical destruction control unit 32 to execute the physical destruction processing. When the hydraulic cylinder mechanism 240 returns after the physical destruction, the physical destruction The hard disk device 36 that has been moved down to the storage box 162 (falls due to its own weight), and the combined destruction process ends.

[Magnetic eraser and magnetic erase process]
FIG. 4 is an explanatory diagram showing an embodiment of the magnetic erasing unit 20 of FIG. 2 and FIG. 3 and an execution process of the magnetic erasing process. FIG. FIG. 4B shows a state in which the storage device 208 is moved to the lowered position after the magnetic erasing process and the hard disk device 36 starts to descend.

  4A and 4B, the magnetic erasing unit 20 includes a coil unit 200, a container 208, a solenoid 216, and a connecting rod 218. The upper end opening 210 of the container 208 is provided below the input unit 14. The coil unit 200 includes a coil 202, a coil bobbin 204 formed of a synthetic resin or the like, and a magnetic shield 206 made of a magnetic material installed so as to surround the outer periphery of the coil 202.

  The loading unit 14 introduces a loading port 140 provided on the upper surface of the housing 12, a door 142 that opens and closes the loading port 140, a hard disk device that is fixed to the lower portion of the loading port 140 and is loaded from the loading port 140 into the container 208. A container 208 having a rotation shaft 214 supported on a bearing plate 148 fixed to the introduction portion 146 is attached to the introduction portion 146 and a closing detection switch 150 that detects opening and closing of the door 142.

  The container 208 is a thin plate made of a non-magnetic material and is formed in a rectangular tube shape. The container 208 swings in the air core portion of the coil portion 200 by the operation of the solenoid 216 connected by the connecting rod 218, and the container 208 shown in FIG. The holding position and the lowered position in FIG. 4B can be moved.

  In FIG. 4A, the hard disk device 36 inserted into the container 208 from the insertion port 140 comes into contact with a stopper 310 fixed to the upper part of the piston receiving plate 258 of the hydraulic cylinder mechanism 240, so that the lower end opening 212. Is stopped at a position where magnetic erasure processing is performed.

  As described above, since the holding position is constant depending on the stopper 310 and the inclination angle of the container 208, even if the hard disk device has a different size, for example, if the hard disk device 36 is 3.5 inches in size, Even a 5-inch hard disk device 46 (imaginary line) is held at a predetermined position and tilt angle by its own weight.

  By tilting the hard disk device 36 at a predetermined angle with respect to the axial direction of the coil 202 at the holding position of the container 208, the magnetic erasure control unit 22 causes the platter surface, which is a magnetic recording medium, in the hard disk device 36 to be coiled. The hard disk device 36 is tilted at a predetermined angle θ with respect to a magnetic field having a predetermined intensity generated in a substantially vertical direction when the 202 is excited, and the hard disk device 36 is either a horizontal magnetic recording system (horizontal magnetization system) or a perpendicular magnetic recording system (vertical magnetization system). Even so, the recorded information can be erased.

  4A, when the door 142 of the closing unit 14 is closed and the start switch 184 is pressed, the magnetic erasing process is started, and the coil 202 is excited by the magnetic erasing control unit 22 to accommodate a magnetic field having a predetermined strength. The magnetic information is erased by applying to the hard disk device 36 in the device 208.

  After the magnetic erasure process is completed, the solenoid 216 is driven by the magnetic erasure control unit 22 and the connecting rod 218 is pulled leftward so that the container 208 is swung counterclockwise around the rotation shaft 214. It moves to the lowered position shown in 4 (B).

  In FIG. 4B, the hard disk device 36 subjected to magnetic erasure processing moves the lower end opening 212 of the container 208 to the upper opening 282 side of the destruction processing chamber 280 so that the lower end is detached from the stopper 310. The descent into the destruction chamber 280 of the physical destruction unit 24 is started (falling due to its own weight).

[Physical destruction section]
FIG. 5 is an explanatory view showing a hydraulic cylinder mechanism 240 and a destruction processing chamber 280 as an embodiment of the physical destruction unit 24 of FIGS. 2 and 3, and FIG. FIG. 5B is a side view of the destruction chamber 280 of FIG. 5A as seen from the right side through the pressure receiving plate 286. FIG.

  As shown in FIGS. 5A and 5B, the hydraulic cylinder mechanism 240 includes a cylinder block 242, a piston receiving plate 258, three destruction piston rods 260, an opening / closing piston rod 262, and sleeves 264 and 266. Yes.

  Cylinders 244 and 246 having oil chambers 248 and 250 provided on the left side are formed inside the cylinder block 242, and the oil chambers 248 and 250 and the cylinders 242 and 246 are communicated with each other through communication paths 252 and 254, respectively.

  The ends of the communication paths 252 and 254 are sealed with a sealing plug 256, the communication path 252 is connected to the hydraulic hose 352 via the hose connection joint 272, and the communication path 254 is connected via the hose connection joint 274. Connected to a hydraulic hose 354.

  The breaking piston rod 260 slidably inserted into the cylinder 244 has a piston portion 260a on the left side (oil chamber 248 side) and a sharpened portion 260b for breaking the hard disk devices 36 and 46 on the right side (projecting side). The O-ring and the backup ring are attached to the piston portion 260a.

  The open / close piston rod 262 slidably inserted into the cylinder 246 has a tip 262b that presses a piston 262a on the left side (oil chamber 250 side) and a movable bottom plate 292 (described later) on the right side (protrusion side). And an O-ring and a backup ring are attached to the piston portion 262a.

  In FIG. 5 (A), the opening / closing piston rod 262 only pushes the movable bottom plate 292 regardless of the destruction of the hard disk device, and the output of the piston portion 262a is smaller than the destruction piston rod 260. Has a smaller diameter than the piston portion 260a of the piston rod 260 for destruction.

  Further, in order to completely open the movable bottom plate 292, the stroke of the opening / closing piston rod 262 is larger than that of the destruction piston rod 260. FIG. 5A shows a retracted state in which the breaking piston rod 260 and the opening / closing piston rod 262 are positioned at the retreat limit.

  The piston receiving plate 258 is fixed to the right side (piston rod protruding side) of the cylinder block 242 with eight bolts 268, and the sleeves 264 and 266 are sandwiched between the cylinder block 242 and the piston receiving plate 258.

  The sleeves 264 and 266 are provided with an O-ring and a backup ring on the outer peripheral portion in contact with the cylinder block 242, the destruction piston rod 260, and the inner peripheral portion in contact with the opening / closing piston rod 262.

  Further, the pressure receiving plate 286 is fixed to the cylinder block 242 and the piston receiving plate 258 via the horizontal plates 288 and 290 with 16 bolts 270 and surrounded by the piston receiving plate 258, the pressure receiving plate 286 and the horizontal plates 288 and 290. A destruction chamber 280 is formed in the space.

  In the grooves 288a and 290a of the horizontal plates 288 and 290, the movable bottom plate 292 urged leftward (in the direction of closing the lower opening 284 of the destruction chamber 280) by the closing springs 294 and 296 (see FIG. 3). Is slidably fitted.

  On the right side of the pressure receiving plate 286 (opposite side of the destruction processing chamber 280), the movable bottom plate 292 moved to the right side (direction in which the lower opening 284 of the destruction processing chamber 280 is opened) is pushed by the opening / closing piston rod 262. A solenoid 298 for locking and holding is disposed.

  As shown in FIG. 5B, in the destruction processing chamber 280, leaf springs 302, 304, 306 and 308 are provided as positioning mechanisms 300 for positioning the hard disk devices 36 and 46 at predetermined positions of the pressure receiving plate 286 during the destruction processing. Is provided.

  The two leaf springs 302 and 304 arranged on both sides of the three breaking piston rods 260 arranged in a straight line are fixed to the upper end portion of the piston receiving plate 258 via a stopper 310, and the magnetic erasing portion The hard disk devices 36 and 46 that have descended from the 20 containers 208 are pressed toward the bottom surface of the pressure receiving plate 286 to be offset.

  The leaf springs 306 and 308 are fixed to the upper portions of the horizontal plates 288 and 290, respectively, and the central portions in the descending direction of the lowered hard disk devices 36 and 46 are linearly arranged on the three breaking piston rods 260. In order to face each other, the center part of the destruction processing chamber 208 is pressed from both sides to be centered.

  As long as the leaf springs 302, 304, 306, and 308 have spring constants that can be positioned without preventing the lowering of the hard disk devices 36 and 46, the shapes and fixing methods shown in FIGS. It doesn't matter.

[Physical destruction]
6, 7, and 8, as the physical destruction process in the physical destruction unit 24 of FIG. 5, the accommodation process (FIG. 6), the destruction process (FIG. 7), and the discharge process (FIG. 8) are expressed as a plane (A). It is explanatory drawing shown with the side cross section (B).

  As shown in FIGS. 6A and 6B, in the destruction processing chamber 280, the movable bottom plate 292 closes the lower opening 284 by the closing springs 294 and 296. In this state, the destruction chamber 280 is lowered from the upper opening 282. The hard disk device 36 is positioned at the center of the first top surface 286a of the pressure receiving plate 286 by the leaf springs 302, 304, 306 and 308, and the small hard disk device 46 (imaginary line) is the second It is positioned at the center of the top surface 286b.

  Here, although the destruction piston rod 260 and the opening / closing piston rod 262 are in the retracted state located at the retreat limit, the physical destruction control unit 32 determines that the hard disk device 36 is in the destruction processing chamber 280. (For example, the time after the start switch 184 is pressed or the presence detection by the sensor), the hydraulic pump device 34 is driven to the pushing side to cause the destruction piston rod 260 and the opening / closing piston rod 262 to protrude. .

  As shown in FIGS. 7A and 7B, when the destruction piston rod 260 protrudes into the destruction treatment chamber 280, the hard disk devices 36, 46 have first top surfaces 286a of the pressure receiving plates 286 on both sides in the vertical direction. Alternatively, since it is supported by the second top surface 286b, the center portion in the vertical direction is broken so as to be bent toward the bottom surface 286c of the pressure receiving plate 286.

  At this time, the piston rod 262 for opening and closing has the tip 262 b in the right direction (the direction in which the lower opening 284 of the destruction chamber 280 is opened) against the urging of the closing springs 294 and 296 by the movable bottom plate 292. Move to the forward limit.

  In FIG. 7B, the hard disk device 36 is constrained by the destruction piston rod 260 and is not in contact with the opening / closing piston rod 262, but the opening / closing piston rod 262 projects faster than the destruction piston rod 260. Thus, when the movable bottom plate 292 is opened before the hard disk device 36 is restrained by the breaking piston rod 260, the protruding open / close piston rod 262 prevents the hard disk device 36 from being lowered (dropped).

  As shown in FIGS. 8A and 8B, when the physical destruction control unit 32 confirms the end of the physical destruction process by a predetermined method (for example, detection of the push side pressure by a pressure switch), the hydraulic pump device 34 is turned on. The breaking piston rod 260 is retracted by driving to the pulling side, and the restraint of the hard disk device 36 by the breaking piston rod 260 is released.

  At this time, the piston rod 262 for opening and closing also retracts, but the engaging portion 292a is engaged with the engaging piece 298a of the solenoid 298 at the position where the movable bottom plate 292 opens the lower opening 284 of the destruction processing chamber 280. Since it is stopped, the hard disk device 36 released from the restriction by the breaking piston rod 260 is lowered (dropped) from the lower opening 284 and is discharged to the discharge box 162 of the discharge unit 16.

  FIG. 9 is a perspective view showing an embodiment of the pressure receiving plate 286 of FIG. 5 and other embodiments. FIG. 9A is a diagram showing the above-described embodiment and FIG. 9B is applied to another embodiment in which the base member of the hard disk device is not destroyed, but is destroyed by a destruction method in which an internal platter is deformed or drilled from the cover member side.

  As shown in FIG. 9 (A), the pressure receiving plate 286 of the present embodiment has a concave shape with a first top surface 286a, a second top surface 286b, and a bottom surface 286c perpendicular to the protruding direction of the breaking piston rod 260. It is formed in stages and can be applied to hard disk devices of different sizes (for example, 3.5 inches and 2.5 inches).

  In addition, the first top surface 286a, the second top surface 286b, and the bottom surface 286c of the pressure receiving plate 286 are all formed at an obtuse angle with respect to the slope connecting them, and the bite into the ridgeline of the destroyed hard disk device is prevented. It is preventing.

  Further, as shown in FIG. 9B, the pressure receiving plate 386 of another embodiment is provided with a relief hole 386b of the breaking piston rod 260 on the top surface 386a, and hard disk devices of all sizes are provided on the top surface 386a. Place and execute the destruction process.

  FIG. 10 shows an embodiment of the discharge unit of FIG. 2, FIG. 10A shows a storage box for temporarily storing the magnetic recording medium lowered from the physical destruction unit, and FIG. It is a perspective view which shows the inclination stand which discharges | emits the magnetic recording medium which descended to the front of a housing | casing.

  A storage box 162 shown in FIG. 10A has a box shape with the top opened, and a viewing window 162a serving as a puller is provided on the front surface. In addition, the tilting table 164 shown in FIG. 10 (B) is open upward and forward to form an inclined surface 164c from the rear upper end to the front lower end, and prevents the operator's hand from entering the interior during the destruction process. A structural material 164a that also serves as a safety barrier and a puller is provided from the upper end of the front part to approximately half above the front part.

  The storage box 162 and the tilting table 164 are inserted and attached to the inside from the discharge port 160 at the time of destruction processing, whereas the storage box 162 takes out and disposes of the destroyed hard disk device at each destruction processing, In the tilt table 164, the hard disk device after the destruction process slides down from the front surface. Therefore, when performing the destruction process continuously, the use of the tilt table 164 improves the work efficiency.

  In addition, the storage box 162 and the tilting table 164 are provided with switch operation pieces 162b and 164b in the rear upper part, respectively, and when the switch operation pieces 162b and 164b are appropriately mounted inside from the discharge port 160, The mounting detection switch 166 provided in the housing is operated by 164b.

[Composite destruction]
FIG. 11 is a flowchart showing the outline of the destruction process according to the present invention, FIG. 12 is a flowchart showing the outline of the magnetic erasure process of FIG. 11, and FIG. 13 is a flowchart showing the outline of the physical destruction process of FIG. There is a flow of processing after the power switch 182 is turned on, the door 142 is opened, the hard disk device 36 is turned on, the door 142 is closed, and the start switch 184 is pushed.

  When the start switch 184 is pressed, the destruction process is started as shown in FIG. 11. First, in step S1, whether or not the door 142 is closed is confirmed by the closing detection switch 150, and the door 142 is not normally closed. If it is determined, the process proceeds to step S2 where a warning “door not closed” is displayed on the display panel 180 and a buzzer is sounded to end the process.

  If it is determined in step S1 that the door 142 is normally closed, it is checked in step S3 by the mounting detection switch 166 whether the storage box 162 is normally mounted, and the storage box 162 is normally mounted. If it is determined that it is not, the process proceeds to step 4 to display a warning message “no storage box” on the display panel 180 and sound a buzzer to end the process.

  If it is determined in step S3 that the storage box 162 is normally mounted, the process proceeds to step S5, “processing start” is displayed on the display panel 180, and magnetic erasure processing is executed in step S6.

  In the magnetic erasure process in step S6, as shown in FIG. 12, first, the charging circuit (circuit unit 222 of the magnetic erasure control unit 22) is driven in step S21, and whether the capacitor voltage has reached a predetermined value in step S22. If the predetermined value is not reached, monitoring is performed in step S23.

  If the capacitor voltage does not reach the predetermined value even after a preset time has elapsed as the time required for charging, it is determined that a charging failure has occurred and the process proceeds to step S26, and “abnormal end” is displayed on the display panel 180. Is displayed as a warning and a buzzer is sounded to end the process.

  If it is determined in step S22 that the capacitor voltage has reached a predetermined value, the charging circuit is stopped in step S24, and the electric charge accumulated in the capacitors 224 and 226 is discharged in step S25 to excite the coil 202. A magnetic field is applied to the hard disk drive 36 to erase magnetic information.

  Thereafter, as shown in FIG. 11, the solenoid 216 of the magnetic erasure unit 20 is driven in step S7 to move the container 208 to the lowered position, the hard disk device 36 is lowered to the destruction processing chamber 280, and physical destruction is performed in step S8. Execute the process.

  In the physical destruction process in step S8, as shown in FIG. 13, first, the electromagnetic valve 346 of the hydraulic pump device 34 is operated by the physical destruction control unit 32 in step S31 to switch the hydraulic circuit in the piston protruding (forward) direction. In step S32, the electric motor 344 of the hydraulic pump device 34 is driven.

  The hydraulic pump device 34 supplies hydraulic oil to the oil chambers 248 and 250 via the hydraulic hose 352 to cause the destruction piston rod 260 and the opening / closing piston rod 262 to protrude. In step S33, it is determined whether or not the protruding direction side of the hydraulic circuit has reached a predetermined pressure. If the predetermined pressure has not been reached, monitoring is performed in step S34.

  When the time set in advance as the time required for physical destruction has passed, if the protruding direction side of the hydraulic circuit has not reached the predetermined pressure, it is determined that a hydraulic failure has occurred and the process proceeds to step S41, and the display panel 180 is displayed. A warning message “abnormal end” is displayed and a buzzer is sounded to end the process.

  If it is determined in step 33 that the predetermined pressure has been reached by operating the pressure switch 348, the electric motor 344 is stopped in step S35, the supply of hydraulic oil to the oil chambers 248, 250 is shut off, and the destruction piston rod 260 and the open / close The protrusion of the piston rod 262 is braked. In this state, the hard disk device 36 has been physically destroyed.

  Here, the pressure switch 348 is activated when all the destruction piston rods 260 and the opening / closing piston rods 262 are restricted from projecting and the projecting direction side of the hydraulic circuit reaches a predetermined pressure.

  Next, the electromagnetic valve 346 of the hydraulic pump device 34 is actuated in step S36, the hydraulic circuit is switched in the piston retracting (retracting) direction, and the electric motor 344 is driven in step S37.

  The hydraulic pump device 34 supplies hydraulic oil to the lower portions of the cylinders 244 and 246 via the hydraulic hose 354 to retract the destruction piston rod 260 and the opening / closing piston rod 262. In step S38, it is determined whether or not the retraction direction side of the hydraulic circuit has reached a predetermined pressure. If the predetermined pressure has not been reached, monitoring is performed in step S39.

  When the time required for the retraction of the breaking piston rod 260 and the opening / closing piston rod 262 has elapsed in advance, if the retraction direction side of the hydraulic circuit does not reach the predetermined pressure, a hydraulic failure has occurred. The process proceeds to step S41, where “abnormal end” is displayed as a warning on the display panel 180 and a buzzer is sounded to end the process.

  If it is determined in step 38 that the pressure switch 350 has been actuated, the electric motor 344 is stopped in step S40, the supply of hydraulic oil to the lower portions of the cylinders 244, 246 is shut off, and the destruction piston rod 260 and the opening / closing operation are performed. The retraction of the piston rod 262 for use is braked.

  At that time, since the movable bottom plate 292 pushed by the opening / closing piston rod 262 and opened is held in the open position by the solenoid 298, the physically destroyed hard disk device 36 is lowered (dropped) to the discharge unit 16, End the physical destruction process.

  Here, the pressure switch 350 is activated when all the breaking piston rods 260 and the opening / closing piston rods 262 reach the retreat limit and the retreat direction side of the hydraulic circuit reaches a predetermined pressure.

  When the physical destruction process is completed, as shown in FIG. 11, the solenoid 298 of the physical destruction unit 24 is driven in step S9 to close the movable bottom plate 292 of the destruction process chamber 280. Subsequently, in step S10, the solenoid 216 of the magnetic erasing unit 20 is driven to move the container 208 to the holding position and return to a state in which the next hard disk device can be accepted. “Finish” is displayed.

[Destruction processing by multiple modes]
FIG. 14 is a flowchart showing an outline of the destruction processing in the plural modes of the present invention. After power is turned on by the power switch 182, the door 142 is opened, the hard disk device 36 is turned on, the door 142 is closed, and the start switch 184 is turned on. It is the flow of processing after pressing.

  In this embodiment, the setting switch 188 selects a “magnetic erasure mode” for performing only magnetic erasure, a “physical destruction mode” for performing only physical destruction, and a “composite destruction mode” for performing physical destruction after magnetic erasure. Processing can be executed.

  When the start switch 184 is pressed, destruction processing is started. First, in step S51, it is confirmed whether or not the door 142 is closed by the closing detection switch 150, and when it is determined that the door 142 is not normally closed, step S52 is performed. Then, the display panel 180 displays a warning “door not closed” and sounds a buzzer to end the process.

  If it is determined in step S51 that the door 142 is normally closed, it is checked in step S53 by the mounting detection switch 166 whether the storage box 162 is normally mounted, and the storage box 162 is normally mounted. If it is determined that it is not, the process proceeds to step 54 where a warning message “no storage box” is displayed on the display panel 180 and a buzzer is sounded to end the process.

  If it is determined in step S53 that the storage box 162 is normally mounted, the process proceeds to step S55, “processing start” is displayed on the display panel 180, and “physical destruction mode” is set in step S56. If the “physical destruction mode” is not determined, the magnetic erasing process (FIG. 12) is executed in step S57 because it is the “magnetic erasing mode” or the “composite destruction mode”.

  After the magnetic erasure process is completed, it is determined whether or not the “magnetic erasure mode” is set in step S58. If the “magnetic erasure mode” is determined, the process proceeds to step S60 and the solenoid 216 of the magnetic erasure unit 20 is turned off. Drive to move the container 208 to the lowered position. In this case, since the movable bottom plate 292 is not closed in step S <b> 59, the hard disk device 36 descends to the discharge unit 16 without being stayed in the destruction processing chamber 280 and is discharged to the storage box 162.

  If the “physical destruction mode” is determined in step S56, the solenoid 298 of the physical destruction unit 24 is driven and the movable bottom plate 292 of the destruction processing chamber 280 is closed in step S59 without performing the magnetic erasing process in step S57. In step S60, the container 208 is moved to the lowered position, and the hard disk device 36 is lowered to the destruction processing chamber 280.

  Further, when the “magnetic erasure mode” is not determined in step S58, it is “physical destruction mode” or “composite destruction mode”. Therefore, the movable bottom plate 292 is closed in step S59, and the container 208 is moved to the lowered position in step S60. The hard disk device 36 is lowered to the destruction processing chamber 280.

  Next, it is determined whether or not the “magnetic erasure mode” is set in step S61. If the “magnetic erasure mode” is not determined, it is “physical destruction mode” or “composite destruction mode”, so in step S62. The physical destruction process (FIG. 13) is executed, and when the physical destruction process ends, the process proceeds to step S63.

  If the “magnetic erasure mode” is determined in step S61, the magnetically erased hard disk device 36 has already been lowered to the ejection unit 16 and ejected to the storage box 162, so the physical destruction process in step S62 is executed. Without proceeding to step S63.

  In step S63, the solenoid 216 of the magnetic erasing unit 20 is driven to move the container 208 to the holding position and return to the state in which the next hard disk device can be received. Is displayed.

  That is, in the “magnetic erasure mode”, the process proceeds to steps S56-S58, S60-S61, S63-S64, and the physical destruction process in step S62 is omitted, and in the “physical destruction mode”, steps S56, S59- Proceeding to S64, omitting the magnetic erasure process in step S57, and in the case of the “composite destruction mode”, proceeding to steps S56-S64, executing the magnetic erasure process in step S57 and the physical destruction process in step S62.

[Continuous processing]
FIG. 15 is a flowchart showing an outline when the destruction process including the magnetic erasure process is continuously performed as another embodiment of the magnetic erasure process of FIGS. 11 and 14, and FIG. It is the flowchart which showed the outline | summary of a process.

  In the present embodiment, in the “physical destruction mode” and “composite destruction mode” including magnetic erasure, the destruction processing can be executed by selecting the “continuous processing mode” for performing the continuous processing by the setting switch 188.

  As shown in FIG. 15, in the magnetic erasure process in step S6 in FIG. 11 and step S57 in FIG. 14, first, in step S71, it is determined whether the capacitor voltage at that time is equal to or higher than a predetermined value. If there is, the charging process is performed in step S72, and if it is equal to or greater than the predetermined value, the process proceeds to step S73.

  In the charging process in step S72, as shown in FIG. 16, first, the charging circuit (the circuit unit 222 of the magnetic erasure control unit 22) is driven, and in step S82, it is determined whether the capacitor voltage has reached a predetermined value. If the value has not been reached, monitoring is performed in step S83.

  If the capacitor voltage does not reach the predetermined value even after a preset time has elapsed as the time required for charging, it is determined that a charging failure has occurred, the process proceeds to step S85, and “abnormal end” is displayed on the display panel 180. Is displayed as a warning and a buzzer is sounded to end the process.

  When it is determined in step S82 that the capacitor voltage has reached a predetermined value, the charging circuit is stopped in step S84, and the electric charge accumulated in the capacitors 224 and 226 is discharged in step S73 in FIG. A magnetic field with a predetermined strength is applied to the hard disk drive 36 to erase the magnetic information.

  Next, in step S74, it is determined whether or not the “continuous processing mode” is set. If “continuous processing mode” is not determined, the process proceeds to step S7 in FIG. 11 or step S58 in FIG.

  When the “continuous processing mode” is determined in step S74, the process proceeds to step S75 to perform the charging process shown in FIG. 16, and after the charging process is finished, the control is not returned to the magnetic process in FIG. With 226 charged, the process waits until step S71 of the next magnetic erasure process.

  In the magnetic erasing process shown in FIG. 12 that is not in the “continuous processing mode”, charging is started after the magnetic erasing process is started. , 15 seconds).

  However, in the magnetic erasing process in the “continuous processing mode” shown in FIG. 15, the hard disk device 36 that has been subjected to the destruction process is ejected until the next magnetic erasing process is started, or the hard disk device that is to be destroyed next is inserted. Within the time required for the work, charging of the capacitors 224 and 226 has already been completed, or the charging has progressed to some extent. Can be shortened.

  In the “composite destruction mode”, the charging can be completed within the time required for the physical destruction process (for example, 20 seconds), so that the capacitors 224 and 226 are accumulated simultaneously with the start of the magnetic erasure process. Charge can be discharged to the coil 202.

[Troubleshooting]
In the present invention, depending on the shape of the hard disk 36 after the physical destruction process, although rare, it may not fall (spontaneous fall) from the destruction process chamber 208 to the discharge unit 16. Therefore, it is necessary to lower the hard disk device 36 that has accumulated in the discharge unit 16.

  11 and 14, the container 208 of the magnetic erasing unit 20 does not immediately return to the holding position after the gas erasing process, but returns to the holding position after the physical destruction process. Thus, the operator opens the door 142 of the loading unit 14, inserts rod-shaped tools into the destruction chamber 280 from the insertion port 140 through the internal cavity of the container, and stays in the destruction chamber 208. Can be pushed out to the discharge section 16.

[Others]
In the above embodiment, the double-acting hydraulic cylinder mechanism is used to drive both the protrusion and retraction of the piston rod hydraulically, but the single-acting hydraulic cylinder mechanism is used to project the piston rod. It is also possible to employ a configuration in which only the piston rod is driven by hydraulic pressure and the piston rod is retracted by a method other than hydraulic pressure such as a spring.

The composite destruction device of the present invention is not limited to the hard disk device, but can be applied to other information storage devices such as an SSD device (Solid State Drive), and is not limited to the above-described embodiment. Appropriate modifications that do not impair the advantages are included.

10: Combined destruction device 12: Housing 120: Upper surface 122: Front surface 124: Inclined surface 126: Left side surface 128: Upper partition wall 130: Lower partition wall 132: Bottom plate 14: Input port 140: Input port 142: Door 144: Lock release switch 146: Introduction unit 148: Bearing plate 150: Closure detection switch 16: Discharge unit 160: Discharge port 162: Storage box 164: Tilting table 166: Mounting detection switch 18: Operation unit 180: Display panel 182: Power switch 184: Start switch 186: Emergency stop switch 188: Setting switch 20: Magnetic erasing unit 200: Coil unit 202: Coil 204: Bobbin 206: Magnetic shield 208: Container 210: Upper end opening 212: Lower end opening 214: Rotating shaft 216: Solenoid 218 : Connection rod 22: Magnetic erasure control unit 220: Power supply unit 222: Circuit units 224 and 22 : Capacitor 24: Physical destruction part 240: Hydraulic cylinder mechanism 242: Cylinder block 244, 246: Cylinder 248, 250: Oil chamber 252, 254: Communication path 256: Sealing plug 258: Piston receiving plate 260: Destruction piston rod 262 : Opening and closing piston rods 260a, 262a: Piston portions 264, 266: Sleeves 268, 270: Bolts 272, 274: Hose connection joints 280: Destruction treatment chamber 282: Upper opening 284: Lower opening 286, 386: Pressure receiving plate 288, 290: Horizontal plate 292: Movable bottom plate 294, 296: Closing spring 298: Solenoid 300: Positioning mechanism 302, 304, 306, 308: Plate spring 310: Stopper (closing member)
32: Physical destruction control unit 320: Power supply unit 322: Circuit unit 34: Hydraulic pump device 340: Pump mechanism unit 342: Tank unit 344: Electric motor 346: Electromagnetic valve 348, 350: Pressure switch 352, 354: Hydraulic hose 36, 46: Hard disk device (magnetic recording medium)

[Basic structure]
The present invention relates to a composite destructive apparatus for magnetically and physically destroying information recorded on a magnetic recording medium, in which a rectangular thick plate-like magnetic recording medium is viewed from the outside upper side with the plate thickness side down. a feeding section that will be turned, is arranged below the feeding section, the magnetic recording medium inserted into the unit, and the magnetic erasing unit capable of executing the magnetic erasing process one side of the rectangular surface and the lower magnetic eraser The magnetic recording medium disposed below the magnetic erasure unit due to its own weight is disposed below the physical destruction unit, the physical destruction unit capable of performing physical destruction processing with the plate thickness side down, and the physical destruction unit and a discharge portion for discharging the magnetic recording medium which has fallen by gravity from the lesion to the outside, the magnetic erasing process, substantially raises the vertical direction magnetic field of a predetermined intensity to excite the coil, inserted from the insertion portion mark a magnetic field at an angle with respect to the rectangular surface of the magnetic recording medium And erases the magnetic information of the magnetic recording medium, physical destruction is to drive the hydraulic cylinder mechanism substantially to protrude horizontally destruction piston rod, plate thickness direction of the magnetic recording medium which has fallen from the magnetic eraser characterized by destruction by pressing the.

[Magnetic eraser]
The magnetic erasure unit is formed in a rectangular tube shape with both upper and lower ends made of a nonmagnetic material, and accommodates the magnetic recording medium introduced from the upper end opening located below the input unit in the air core part of the coil. The container includes a holding position for holding the rectangular surface of the magnetic recording medium introduced by closing the lower end opening at a predetermined angle with respect to the magnetic field direction, and holding the lower end opening open. The magnetic recording medium can be moved to a lowering position where the magnetic recording medium is lowered to the physical destruction portion, and is moved to the lowering position after the magnetic erasing process is completed at the holding position.

[Physical destruction section]
The physical destruction part is arranged with an upper opening and a lower opening on the piston rod projecting side of the hydraulic cylinder mechanism, and introduces the magnetic recording medium lowered from the lower end opening of the container from the upper opening. The hydraulic cylinder mechanism is provided with a plurality of cylinders in which oil chambers communicate with each other, and are arranged in a straight line in the vertical direction, including a destruction processing chamber to be accommodated and a movable bottom plate that opens and closes a lower opening of the destruction processing chamber. destruction piston rod in a cylinder other than the bottom is inserted, the bottom of the cylinder, the opening and closing piston rod for moving the movable base plate in the open position is inserted during the projecting, movable bottom plate, the protruding operation of the opening and closing piston rod It is held in the closed position until the start, moves to the open position in conjunction with the protruding movement of the opening and closing piston rod, maintains the open position without interlocking with the retraction movement of the opening and closing piston rod, and opens and closes the opening and closing piston. Nroddo is entering and leaving the possible return to the closed position after the magnetic recording medium is lowered.

[Container]
Container is rotating shaft located closer to the upper end opening portion than the lower end opening, a holding position where the lower end opening faces the closure member, lowering the lower end opening faces the upper opening of the destruction chamber Swings between positions.

[Pressure plate]
The physical destruction unit is arranged to face the arrangement line of the plurality of cylinders the axis of symmetry of the piston rod protruding side of the destruction chamber concave shape is formed, destruction chamber with respect to the pressing of destruction piston rod And a pressure receiving plate for supporting the magnetic recording medium accommodated in the concave top surface.

Here, the pressure receiving plate is concave is formed in two stages, is supported by the concave shape first top surface or the second top surface of the two-stage magnetic recording medium accommodated in the destruction chamber.

[Destruction processing mode]
Further, the magnetic recording medium accommodated in the container is moved to the lowering position by moving the container to the lowered position with the movable bottom plate closed after completion of the magnetic erasing process, and is lowered to the discharge part after the physical destruction process is completed. In the combined destruction mode, in the state where the movable bottom plate is opened after the magnetic erasure processing is completed, the container is moved to the lowered position and lowered to the discharge portion, and the movable bottom plate is closed without performing the magnetic erasure processing. And a physical destruction mode in which the container is moved to the lowering position, lowered to the physical destruction portion, and lowered to the discharge portion after completion of the physical destruction treatment, and any one of the composite destruction mode, the magnetic erasure mode, and the physical destruction mode but to destroy the process is selected.

[Case]
The composite destructive device of the present invention includes a casing whose internal space is divided into three layers in the vertical direction. The casing includes an input part and a magnetic erasing part in an upper layer, a physical destruction part in an intermediate layer, and a discharge part in a lower layer. hydraulic pump unit for supplying hydraulic pressure to the hydraulic cylinder mechanism Ru is located.

[Discharge part]
Here, the discharge section, a magnetic recording medium which has fallen from the physical destruction unit, a storage box for temporarily storing, either the ramp to discharge in front of the casing can be installed is selected.

[Continuous processing]
The composite destructive device of the present invention has a continuous processing mode in which the destructive processing is continuously performed, and the magnetic erasure processing is performed by driving the charging circuit and charging the capacitor, and then discharging the accumulated charge of the capacitor to the coil for excitation. If the continuous processing mode is selected after discharging, the charging circuit is immediately driven to start charging the capacitor. If the continuous processing mode is not selected, the capacitor is charged until the next magnetic erase processing. Do not start .

[Troubleshooting]
The container maintains the lowered position until the physical destruction process is completed, and moves to the holding position after the physically destroyed magnetic recording medium is ejected to the outside .

Claims (14)

In a combined destructive device for magnetically and physically destroying information recorded on a magnetic recording medium,
A feeding unit for feeding a rectangular thick plate-shaped magnetic recording medium from above;
A magnetic erasure unit disposed below the input unit and magnetically erasing the magnetic recording medium lowered from the input unit;
A physical destruction unit that is disposed below the magnetic erasure unit and physically destroys the magnetic recording medium lowered from the magnetic erasure unit;
A discharge unit disposed below the physical destruction unit and discharging a magnetic recording medium lowered from the physical destruction unit;
With
The magnetic erasure process is to generate a magnetic field of a predetermined intensity by exciting a coil in a substantially vertical direction, applying the magnetic field to the magnetic recording medium lowered from the input unit, and erasing the magnetic information of the magnetic recording medium,
The physical destruction process is characterized by driving a hydraulic cylinder mechanism to project a destruction piston rod, and pressing and destroying the magnetic recording medium lowered from the magnetic erasing portion with the destruction piston rod. apparatus.
The combined destruction apparatus according to claim 1,
The magnetic erasing unit is formed in a rectangular tube shape with a non-magnetic material, accommodates the magnetic recording medium introduced from the upper end opening located below the input unit, and holds it in the air core of the coil. With a container,
The container closes a lower end opening and holds the introduced magnetic recording medium at a predetermined angle with respect to the magnetic field direction, and opens the lower end opening and holds the held magnetic recording medium. A combined destructive apparatus, wherein the destructive position is capable of moving to a lowering position to be lowered to a physical destruction unit, and moves to the lowering position after the magnetic erasing process at the holding position.
In the compound destruction device according to claim 2,
The physical destruction part is
The hydraulic cylinder mechanism is disposed on the piston rod projecting side with an upper opening and a lower opening, and the magnetic recording medium lowered from the lower end opening of the container is introduced from the upper opening and accommodated. A destruction chamber,
A movable bottom plate for opening and closing the lower opening of the destruction chamber;
With
The hydraulic cylinder mechanism is
A plurality of cylinders with oil chambers communicating with each other are arranged in a straight line in the vertical direction,
Insert the destruction piston rod into the cylinder other than the bottom,
The lowermost cylinder has an open / close piston rod that moves the movable bottom plate to the open position when protruding,
The movable bottom plate is
It is held in the closed position until the start of the projecting operation of the piston rod for opening and closing,
Move to the open position in conjunction with the protruding movement of the opening and closing piston rod,
Maintaining the open position without interlocking with the retraction operation of the piston rod for opening and closing,
A composite destructive device, wherein the opening and closing piston rod is retracted and the magnetic recording medium is lowered, so that it can return to a closed position.
In the combined destruction apparatus of Claim 3,
The open / close piston rod moves the movable bottom plate to an open position while preventing the magnetic recording medium housed in the destruction processing chamber from descending when protruding.
In the combined destruction apparatus of Claim 3,
The container has a rotating shaft disposed at a position closer to the upper end opening than the lower end opening, the holding position where the lower end opening faces the closing member, and the lower end opening is located in the destruction chamber. A combined destruction apparatus characterized by swinging between the lowering position facing the upper opening.
In the combined destruction apparatus of Claim 3,
The physical destruction portion is disposed to be opposed to the piston rod protruding side of the destruction chamber by forming a concave shape with respect to the arrangement line of the plurality of cylinders as an axis of symmetry, and against the pressing of the destruction piston rod A composite destructive apparatus comprising a pressure receiving plate for supporting a magnetic recording medium accommodated in a destructive processing chamber on the concave top surface.
In the combined destruction apparatus of Claim 6,
The pressure plate has the concave shape formed in two stages, and supports the magnetic recording medium accommodated in the destruction chamber on the first top surface or the second top surface of the two-stage concave shape. Combined destruction device.
In the combined destruction apparatus of Claim 3,
The physical destruction portion has a positioning mechanism that causes a center line in the introduction direction of the magnetic recording medium introduced from the upper opening to oppose the arrangement lines of the plurality of cylinders and moves the magnetic recording medium to the pressure receiving plate side. A combined destruction device characterized by comprising:
In the combined destruction apparatus of Claim 3,
A magnetic recording medium accommodated in the container,
A combined destruction mode in which the container is moved to a lowered position with the movable bottom plate closed after completion of the magnetic erasing process and lowered to a physical destruction part, and lowered to the discharge part after completion of the physical destruction process;
A magnetic erasing mode in which the container is moved to a lowered position with the movable bottom plate opened after the magnetic erasing process is completed, and lowered to the discharge unit;
Physical destruction mode in which the container is moved to a lowered position with the movable bottom plate closed without performing the magnetic erasing process and lowered to a physical destruction part, and lowered to the discharge part after completion of the physical destruction process;
With
A composite destruction apparatus, wherein destruction treatment is performed by selecting any one of the composite destruction mode, magnetic erasure mode, and physical destruction mode.
The combined destruction apparatus according to claim 1,
The internal space is equipped with a housing that is partitioned into three levels in the vertical direction.
The housing is characterized in that the input part and the magnetic erasing part are disposed in the upper layer, the physical destruction part is disposed in the intermediate layer, and the hydraulic pump device for supplying hydraulic pressure to the hydraulic cylinder mechanism is disposed in the lower layer. Destruction device.
The combined destruction apparatus according to claim 1,
The discharge unit can be installed by selecting either a storage box for temporarily storing the magnetic recording medium lowered from the physical destruction unit or an inclined platform for discharging the magnetic recording medium in front of the housing. A combined destructive device.
The combined destruction apparatus according to claim 1,
The combined destruction apparatus, wherein the magnetic recording medium is a hard disk device.
The combined destruction apparatus according to claim 1,
In the composite erasure apparatus, the magnetic erasure processing discharges the accumulated charge of the capacitor to the coil and excites it, and immediately after the discharge, the charging circuit is driven to start charging the capacitor.
In the compound destruction device according to claim 2,
The composite destruction apparatus, wherein the container moves to the holding position after the physical destruction treatment.

Images