JP2016100029A - Hard disk connection device, hard disk carrier device, and hard disk extraction prevention method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hard disk connection device that can prevent damage to a hard disk and the occurrence of short circuit between the hard disk and a housing of a computer device without the need of modification to the computer device.SOLUTION: A hard disk connection device includes: a display part that performs predetermined display when a power is supplied from a computer device or a power storage part; a time control part that hides the display on the display part when a preset time has elapsed from stop of the supply of power from the computer device; and the power storage part that performs charging when a power is supplied from the computer device, and when the power supply from the computer stops, starts discharge and supplies a power to the display part and time control part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a hard disk connection device, a hard disk carrier device, and a hard disk removal prevention method for preventing damage to a hard disk and occurrence of a short circuit with a housing.

  In general, a hard disk carrier device is known in which a carrier is attached so as to support the periphery of the hard disk in order to reduce vibration during operation of the computer device. Also known is a hard disk connection device that is a connector with a substrate that is attached to the connector of the hard disk in order to enable individual power control of the hard disk.

  In a hard disk connection device, when an operator removes a hard disk from a computer device due to damage to the hard disk caused by pulling out the hard disk during inertial rotation of the platter in the hard disk or back electromotive force generated by inertial rotation of the platter. There is known a hard disk connection device that prevents the occurrence of a short circuit between the hard disk and the computer apparatus housing when they come into contact with each other. In order to prevent a hard disk failure, the worker waits for a certain period of time after the power source of the computer apparatus is turned off or the computer apparatus disconnects the electrical connection of the hard disk when the hard disk is removed. Further, the operator generally performs an operation of removing the hard disk from the computer apparatus housing after the inertial rotation of the cylinder in the hard disk is settled by waiting for a certain time. However, at present, the operator's erroneous operation cannot be prevented, and the time until the computer device is turned off or the computer device is disconnected from the electrical connection of the hard disk depends on the operator's judgment. There may be insufficient waiting time. This hard disk connection device notifies the user by means of an LED or the like that hard disk removal is prohibited while the platter in the hard disk is rotating.

  An example of a hard disk connection device is described in Patent Document 1. When the hard disk connection device described in Patent Document 1 detects that the hard disk mounted on the canister has been removed, the LED is turned on or off with an LED control signal. Furthermore, the control microcomputer waits until the time required for the platter of the hard disk to stop has elapsed. When the time has elapsed, the orange LED is turned off.

JP 2004-206746 A

  However, the technique described in Patent Document 1 described above needs to add an LED display unit and a circuit for operating the LED display unit on the main body side. Therefore, the technique described in Patent Document 1 has a problem that it requires a modification to a computer device and is costly.

  An object of the present invention is to provide a hard disk connection device, a hard disk carrier device, and a hard disk removal prevention method that can solve the above-described problems.

  The first hard disk connection device according to one aspect of the present invention includes a display unit that performs predetermined display when power is supplied from the computer device or the power storage unit, and a preset value after the power supply from the computer device is stopped. When the time has elapsed, the time control unit for turning off the display on the display unit, charging is performed when power is supplied from the computer device, and when the power supply from the computer device is stopped, the discharge is started, and the display unit and time control unit And a power storage unit for supplying power.

  In a first hard disk removal prevention method according to an aspect of the present invention, when power is supplied from a computer device, the power storage unit performs charging, and the display unit displays that the hard disk carrier device is prohibited from being removed. When the supply of power is stopped, the time control unit starts timing the timer, the power storage unit starts discharging, supplies power to the display unit and the time control unit, and the power supply from the computer device stops and is preset When the elapsed time elapses, the time control unit turns off the display indicating that the hard disk carrier device is not allowed to be removed from the display unit.

  According to the present invention, there is no need to modify the computer device, and it is possible to prevent the occurrence of damage to the hard disk or a short circuit between the hard disk and the computer device housing.

FIG. 1 is a schematic diagram (top view) showing an example of a hard disk carrier device 1000 according to the first embodiment of the present invention. FIG. 2 is a schematic circuit diagram showing an example of the configuration of the hard disk connection device 100 according to the first embodiment and the connection between the hard disk carrier device 1000 and the circuit relating to the power supply function of the device 300. FIG. 3 is a schematic diagram illustrating an example of display on the display unit 141 when power is supplied from the apparatus 300 according to the first embodiment. FIG. 4 is a schematic diagram illustrating an example of a display on the display unit 141 immediately after the apparatus 300 is powered off in the first embodiment. FIG. 5 is a schematic diagram illustrating an example of a display on the display unit 141 after a preset time has elapsed after the power of the apparatus 300 is turned off in the first embodiment. FIG. 6 is a schematic circuit diagram showing an example of the configuration of the hard disk connection device 100 according to the modification of the present invention and the connection between the hard disk carrier device 1000 and the circuit relating to the power supply function of the device 300. FIG. 7 is a schematic diagram (top view) showing an example of the hard disk carrier device 1001 according to the second embodiment of the present invention. FIG. 8 is a schematic circuit diagram showing an example of the configuration of the hard disk connection device 101 according to the second embodiment and the connection between the hard disk carrier device 1001 and the circuit relating to the power supply function of the device 300. FIG. 9 is a schematic diagram (top view) showing an example of the hard disk carrier device 1002 according to the third embodiment of the present invention. FIG. 10 is a schematic circuit diagram showing a connection between an example of the configuration of the hard disk connection device 102 according to the third embodiment and a circuit related to the power supply function of the hard disk carrier device 1002 and the device 300. FIG. 11 is a block diagram illustrating an example of the power supply unit of the hard disk carrier device 1003, the hard disk connection device 103, and the device 300 according to the fourth embodiment.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a schematic diagram (top view) showing an example of a hard disk carrier device 1000 according to the first embodiment of the present invention. Further, parts unnecessary for the description of the structure of the hard disk carrier device 1000 such as a housing cover, a cable, and an eject lever are omitted and are not shown in the drawing. The hard disk carrier device 1000 includes at least the hard disk connection device 100, the hard disk 200, and the display unit 141.

  The hard disk carrier device 1000 is mounted at a predetermined position of the device 300.

  The hard disk connection device 100 is mounted in the hard disk carrier device 1000 while being connected to the hard disk 200. In addition, the device 300 and the hard disk connection device 100 have connection terminals on their opposing surfaces. When the hard disk carrier device 1000 is mounted at a predetermined position of the device 300 via the connection terminal, the device 300 is connected to the hard disk 200 by connecting the connection terminals of the device 300 and the hard disk connection device 100. Is done. As a result, the device 300 can supply power of 12 V and 5 V to the hard disk 200, and data can be transmitted and received between the device 300 and the hard disk 200.

  The display unit 141 displays an indication to the front of the hard disk carrier device 1000 that the hard disk carrier device 1000 of the display circuit 140 described later is prohibited from being removed. In addition, the display unit 141 may display the state of the hard disk 200. Specifically, the display unit 141 is realized by a lens bar or the like. The display unit 141 displays that the removal is prohibited by causing a display such as an LED displayed by a display circuit 140 described later to reach a lens attached in front of the hard disk carrier device 1000.

  FIG. 2 is a schematic circuit diagram showing a connection between an example of the configuration of the hard disk connection device 100 according to the first embodiment of the present invention and a circuit related to the power supply function of the hard disk carrier device 1000 and the device 300. Referring to FIG. 2, the hard disk connection device 100 includes a power supply control circuit 110, a time control circuit 120, a power storage circuit 130, a display circuit 140, and a switch circuit 150.

  The power control circuit 110 performs power management for individual hard disks 200 to be connected.

  The time control circuit 120 monitors the 5V power supply unit 320 of the apparatus 300, and when the 5V power supply is stopped, the timer control starts. When the preset time has elapsed, the time control circuit 120 turns off the display on the display circuit 140. Note that the preset time is arbitrarily set based on the time from when the power supply to the apparatus 300 stops until the inertia rotation of the platter in the hard disk 200 ends and stops. In consideration of the error, a time with an allowance may be set as appropriate.

  The power storage circuit 130 is always charged by supplying power from the 12V power supply unit 310 when power is supplied from the device 300. When the power of the device 300 is turned off or the hard disk carrier device 1000 is disconnected from the device, that is, when the power supply from the device 300 is stopped, the storage circuit 130 starts discharging.

  The display circuit 140 is realized by an LED or the like, and always displays that the hard disk carrier device 1000 is prohibited to be removed when power is supplied from the device 300. The display circuit 140 displays a display indicating that the hard disk carrier device 1000 is prohibited to be removed due to the discharge of the storage circuit 130 after the power supply from the device 300 is stopped until the display is turned off by the control of the time control circuit 120. continue.

The switch circuit 150 is realized by a field effect transistor (FET) or the like. When the 5V power supply from the device 300 is stopped, the switch circuit 150 is automatically turned off, and the discharge of the power storage circuit 130 is blocked from leaking to the hard disk 200. Thereby, when the power supply from the apparatus 300 is stopped, the power supply to the hard disk 200 is stopped, but the power supply to the time control circuit 120 and the display circuit 140 is continued by the discharge from the power storage circuit 130.

  3 to 5 show examples of display on the display unit 141. FIG. In addition, the display of A and B in the drawings of FIGS. 3 to 5 is a display of the state of the hard disk 200 described above and may be omitted. 3 to 5 is a display on the display unit 141 by the display circuit 140.

  FIG. 3 is a schematic diagram illustrating an example of display on the display unit 141 when power is supplied from the apparatus 300 according to the first embodiment of the present invention. Referring to FIG. 3, there is a display C on the display unit 141, that is, a display indicating that the hard disk carrier device 1000 is prohibited to be removed.

  FIG. 4 is a schematic diagram illustrating an example of a display on the display unit 141 immediately after the power supply from the device 300 is stopped in the first embodiment of the present invention. Referring to FIG. 4, the display 141 continues to display C, that is, the hard disk carrier device 1000 is prohibited from being removed due to the discharge from the storage circuit 130.

  FIG. 5 is a schematic diagram illustrating an example of a display on the display unit 141 after a preset time has elapsed after power supply from the apparatus 300 is stopped in the first embodiment of the present invention. Referring to FIG. 5, display C is deleted from display 141 under the control of time control circuit 120, that is, the display indicating that hard disk carrier device 1000 is prohibited to be removed.

  Next, effects of the first exemplary embodiment of the present invention will be described.

  The hard disk connection device 100 according to the present embodiment described above can prevent damage to the hard disk and occurrence of a short circuit between the hard disk and the computer device housing, and does not require modification to the computer device.

  This is because the following configuration is included. That is, first, since the power supply of the device 300 is turned off or the hard disk carrier device 1000 is disconnected from the device 300, that is, after the power supply from the device 300 is stopped, it is set in advance under the control of the time control circuit 120. During the time, the display circuit 140 displays that the hard disk carrier device 1000 is prohibited to be removed. Second, the display circuit 140 is one of the components of the hard disk connection device 100, and the display circuit 140 and the display unit 141 are in the hard disk carrier device 1000. Third, after the power supply from the device 300 is stopped, the time control circuit 120 and the display circuit 140 operate by discharging from the power storage circuit 130 in the hard disk connection device 100. Thereby, during the time when removal of the hard disk 200 is prohibited, a display to that effect can be implemented. Further, the present embodiment is realized only by the processing of the devices in the hard disk carrier device 1000 excluding the hard disk 200, and does not require the processing of the hard disk 200 and the device 300. Therefore, damage to the hard disk and occurrence of a short circuit between the hard disk and the computer apparatus housing can be prevented, and an effect that modification to the computer apparatus is unnecessary can be obtained.

[Modification]
The display circuit 140 in the first embodiment may be provided not on the hard disk connection device 100 but on the front surface of the hard disk carrier device 1000. In this case, the display unit 141 does not require a lens bar or the like, and directly displays the display of the display circuit 140 on the front surface of the hard disk carrier device 1000.

  FIG. 6 is a schematic circuit diagram showing an example of the configuration of the hard disk connection device 100 according to the modification of the present invention and the connection between the hard disk carrier device 1000 and the circuit relating to the power supply function of the device 300.

  Also in this modified example, the processing is realized only by the processing in the hard disk carrier device 1000 excluding the hard disk 200, and the processing of the hard disk 200 and the device 300 is not required, so that the hard disk damage and the hard disk are the same as in the first embodiment. And the computer apparatus housing can be prevented from being short-circuited, and the computer apparatus need not be modified.

[Second Embodiment]
Next, a second embodiment of the present invention will be described in detail with reference to the drawings. Hereinafter, the description overlapping with the above description is omitted as long as the description of the present embodiment is not obscured.

  FIG. 7 is a schematic diagram (top view) showing an example of the hard disk carrier device 1001 according to the second embodiment of the present invention. In the hard disk carrier device 1001 according to the second embodiment, a removal prevention mechanism 161 is added to the hard disk carrier device 1001 as compared with the hard disk carrier device 1000 according to the first embodiment. Further, instead of the hard disk carrier device 1000 and the hard disk connection device 100, a hard disk carrier device 1001 and a hard disk connection device 101 are provided.

  FIG. 8 is a schematic circuit diagram showing an example of the configuration of the hard disk connection device 101 according to the second embodiment of the present invention and the connection between the hard disk carrier device 1001 and the circuit related to the power supply function of the device 300.

  Referring to FIG. 8, the hard disk carrier device 1001 in the present embodiment is newly provided with a mechanism driving unit 160 as compared with that in the first embodiment. The time control circuit 121 is partially different in function from the time control circuit 120.

  The removal prevention mechanism 161 is a mechanical component, and is locked to a part of the housing of the device 300, and takes two states: a state where the hard disk carrier device 1001 cannot be physically removed from the device 300 and a state where it can be removed. 8 shows the key-like mechanism parts provided at both ends of the hard disk carrier device 1001, the shape, the number of members, the material, the two-state transition method, etc. of the removal prevention mechanism 161 are described above. Any method may be used as long as the function is provided. For example, it may be realized by an electromagnetic lock. Further, if necessary, the housing of the apparatus 300 may be subjected to necessary measures such as providing a recess at a place where it engages with the removal preventing mechanism 161.

  The mechanism drive unit 160 controls the drive of the removal prevention mechanism 161 based on the notification from the time control circuit 121.

  In addition to the function of the time control circuit 120 described above, the time control circuit 121 controls the display circuit 140 to display that the hard disk carrier device 1000 is prohibited to be removed. Further, the time control circuit 121 makes the hard disk carrier device 1001 physically unremovable from the device 300 during the supply of 5V power and the time until the preset time elapses after the supply stops. Therefore, the time control circuit 121 notifies the mechanism driving unit 160 to drive the removal preventing mechanism 161. When a preset time has elapsed since the supply of 5V power is stopped, the mechanism drive unit 160 is instructed to make the hard disk carrier device 1001 ready to be removed from the device 300. Further, the mechanism driving unit 160 may not be provided, and the time control circuit 121 may directly control the driving of the removal preventing mechanism 161.

  Next, effects of the second exemplary embodiment of the present invention will be described.

  The hard disk connection device 101 according to the present embodiment described above can prevent the hard disk from being damaged or the short circuit between the hard disk and the computer apparatus housing.

  This is because the following configuration is included. That is, first, when the display circuit 140 displays that the hard disk carrier device 1000 is prohibited to be removed, that is, when the 5 V power supply is being supplied and the supply has stopped, a preset time has elapsed. The removal prevention mechanism 161 is driven so that the hard disk carrier device 1001 cannot be physically removed from the device 300 for a period of time. Second, the mechanism drive unit 160 drives the removal prevention mechanism 161 so that the hard disk carrier device 1001 can be removed from the device 300 when a preset time has elapsed since the supply of 5V power was stopped. Therefore, while the hard disk carrier device 1001 is displayed as being prohibited to be removed, the hard disk carrier device 1001 cannot be physically removed. Therefore, the hard disk connection device 101 further detects damage to the hard disk or the hard disk and computer device housing. It is possible to prevent the occurrence of a short circuit.

[Third Embodiment]
Next, a third embodiment of the present invention will be described in detail with reference to the drawings. Hereinafter, the description overlapping with the above description is omitted as long as the description of the present embodiment is not obscured.

  FIG. 9 is a schematic diagram (top view) showing an example of the hard disk carrier device 1002 according to the third embodiment of the present invention. The hard disk carrier device 1002 according to the third embodiment has a speaker unit 170 added to the hard disk carrier device 1002 as compared with the hard disk carrier device 1000 according to the first embodiment. Further, instead of the hard disk carrier device 1000 and the hard disk connection device 100, a hard disk carrier device 1002 and a hard disk connection device 102 are provided.

  FIG. 10 is a schematic circuit diagram showing an example of the configuration of the hard disk connection device 102 according to the third embodiment of the present invention and the connection between the hard disk carrier device 1002 and the circuit relating to the power supply function of the device 300.

  Referring to FIG. 10, the hard disk carrier device 1002 in the present embodiment is newly provided with a speaker unit 170 as in FIG. 9, compared with that in the first embodiment. The time control circuit 122 is partially different in function from the time control circuit 120.

  The speaker unit 170 is installed on the front surface of the hard disk carrier device 1002 and emits a preset sound under the control of the time control circuit 122.

  In addition to the function of the time control circuit 120, the time control circuit 122 controls the speaker unit 170 to sound a preset sound when a preset time has elapsed after the supply of 5V power is stopped. Further, when the supply of 5V power is stopped, the time control circuit 122 controls the speaker unit 170 to make a preset sound, and when a preset time has elapsed after the supply of 5V power is stopped, You may control to stop the sound of the speaker part 170. FIG. Any method may be used for sound generation as long as a preset time has elapsed since the supply of 5V power is stopped.

  Next, effects of the third exemplary embodiment of the present invention will be described.

  The hard disk connection device 102 according to the present embodiment described above can further prevent damage to the hard disk and occurrence of a short circuit between the hard disk and the computer apparatus housing.

  This is because the following configuration is included. That is, first, the speaker unit 170 notifies the operator that a preset time has elapsed since the supply of 5V power was stopped. Therefore, the operator can confirm that the hard disk carrier device 1002 can be removed by the sound of the speaker unit 170 even when the display unit 141 of the hard disk carrier device 1002 is not visually observed. It is possible to prevent the occurrence of damage to the hard disk and the occurrence of a short circuit between the hard disk and the computer apparatus housing.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings. Hereinafter, the description overlapping with the above description is omitted as long as the description of the present embodiment is not obscured.

  FIG. 11 is a block diagram illustrating an example of the power supply unit of the hard disk carrier device 1003, the hard disk connection device 103, and the device (computer device) 300 according to the fourth embodiment of the present invention. Referring to FIG. 11, the hard disk connection device 103 includes a time control unit 123, a power storage unit 131, and a display unit 141. The hard disk carrier device 1003 includes a hard disk 200 and a hard disk connection device 103. The apparatus 300 includes a power source 330.

  The display unit 141 performs a predetermined display when power is supplied from the power supply 330 or the power storage unit 131 of the device 300. The predetermined display may be continuous lighting or blinking. Or display of a character and an image may be sufficient.

  The time control unit 123 corresponds to the time control circuit 120 in the first embodiment. That is, the time control unit 123 turns off the display on the display unit 141 when a preset time has elapsed after the supply of power from the power source 330 of the apparatus 300 is stopped.

  The power storage unit 131 is charged when power is supplied from the device 300. When the power supply from the power source 330 of the device 300 is stopped, the power storage unit 131 starts discharging and supplies power to the display unit 141 and the time control unit 123. The power storage unit 131 may have a configuration corresponding to the power storage circuit 130 and the switch circuit 150 in the first embodiment.

  The effect of the fourth embodiment of the present invention is the same as the effect of the first embodiment.

  Each component in each embodiment of the present invention described above can be realized by a computer apparatus and firmware based on program control as well as by realizing the function in hardware. The program is provided by being recorded on a computer-readable recording medium such as a magnetic disk or a semiconductor memory, and is read by the computer when the computer is started up. The read program causes the computer to function as a component in each of the embodiments described above by controlling the operation of the computer.

  Although the present invention has been described with reference to each embodiment, the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  For example, each component described in each of the above embodiments does not necessarily have to be individually independent. For example, for each component, a plurality of components may be realized as one module, or one component may be realized as a plurality of modules. Each component is configured such that a component is a part of another component, or a part of a component overlaps a part of another component. Also good.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

  (Additional remark 1) The display part which performs a predetermined display at the time of the power supply from a computer apparatus or an electrical storage part, and when the preset time passes after supply of the power supply from the said computer apparatus stops, the said display part A time control unit that turns off the display and charging when power is supplied from the computer device, and when power supply from the computer device is stopped, discharging is started and power is supplied to the display unit and the time control unit A hard disk connection device including a power storage unit.

  (Supplementary note 2) The preset time counted by the time control unit is set based on the time from the stop of the power supply to the hard disk from the computer device until the inertia rotation of the platter in the hard disk ends and stops. The hard disk connection device according to appendix 1.

  (Supplementary note 3) The hard disk connection device according to supplementary note 1 or 2, wherein the power storage unit includes a switch circuit that blocks a discharge of the power storage unit from leaking to the hard disk when power supply from the computer device is stopped. .

  (Additional remark 4) It is further equipped with the removal prevention mechanism which makes the state which cannot remove a hard disk carrier apparatus from the said computer apparatus, and was preset after the supply of power from the said computer apparatus and the supply of power from the said computer apparatus stopped When the time until the time elapses, the time control unit is in a state in which the hard disk carrier device cannot be removed from the computer device, and when a preset time has elapsed since the supply of power from the computer device has stopped, The hard disk connection device according to any one of appendices 1 to 3, wherein the time control unit sets the hard disk carrier device in a state where it can be removed from the computer device.

  (Additional remark 5) The time control part is further provided with the speaker part which sounds the sound preset by the control of the time control part, and when the preset time has passed since the supply of power from the computer device stops The hard disk connection device according to any one of supplementary notes 1 to 4, wherein the speaker unit controls to sound a preset sound.

  (Supplementary note 6) A hard disk carrier device including at least the hard disk connection device according to any one of supplementary notes 1 to 5 and a hard disk connected to the hard disk connection device.

  (Supplementary note 7) When power is supplied from the computer device, the power storage unit is charged, the display unit displays that the hard disk carrier device is not allowed to be removed, and the power supply from the computer device is stopped. When the control unit starts timing the timer, the power storage unit starts discharging, supplies power to the display unit and the time control unit, and the power supply from the computer device stops and a preset time has elapsed The hard disk removal preventing method for turning off the indication that the time control unit prohibits removal of the hard disk carrier device from the display unit.

  (Supplementary Note 8) The preset time measured by the time control unit is set based on the time from the stop of power supply to the hard disk from the computer device until the inertia rotation of the platter in the hard disk ends and stops. The hard disk removal prevention method according to appendix 7.

  (Additional remark 9) The said electrical storage part has a switch circuit which interrupts | blocks the leakage of the electric charge to the hard disk by discharge, when supply of the power supply from the said computer apparatus stops and discharge is started, The hard disk removal of Additional remark 7 or 8 Prevention method.

  (Additional remark 10) It is further provided with the removal prevention mechanism which makes the hard disk carrier apparatus unremovable from the said computer apparatus, and the said time control part cannot remove the said hard disk carrier apparatus from the said computer apparatus at the time of the power supply from the said computer apparatus Any one of appendixes 7 to 9, wherein when the power supply from the computer device stops and a preset time elapses, the time control unit enables the hard disk carrier device to be removed from the computer device. The hard disk removal prevention method described in 1.

  (Additional remark 11) It further has the speaker part which sounds the sound preset by the control of the said time control part, and when supply of the power supply from the said computer apparatus stops and the preset time passes, the said time control part is beforehand 11. The hard disk removal prevention method according to any one of appendices 7 to 10, wherein the speaker unit is controlled to sound a set sound.

100, 101, 102, 103 Hard disk connection device 110 Power supply control circuit 120, 121, 122 Time control circuit 123 Time control unit 130 Power storage circuit 131 Power storage unit 140 Display circuit 141 Display unit 150 Switch circuit 160 Mechanism drive unit 161 Removal prevention mechanism 170 Speaker unit 200 Hard disk 300 Device 310 12V power supply unit 320 5V power supply unit 330 Power source 1000, 1001, 1002, 1003 Hard disk carrier device

Claims (10)

A display unit that performs a predetermined display when power is supplied from the computer device or the power storage unit;
A time control unit for turning off the display of the display unit when a preset time has elapsed since the supply of power from the computer device is stopped;
A hard disk connection device comprising: a power storage unit that performs charging when power is supplied from the computer device, and starts discharging when the power supply from the computer device stops, and supplies power to the display unit and the time control unit . 2. The preset time measured by the time control unit is set based on the time from the stop of power supply to the hard disk from the computer device until the inertia rotation of the platter in the hard disk ends and stops. The hard disk connection device described.   3. The hard disk connection device according to claim 1, wherein the power storage unit includes a switch circuit that blocks leakage of discharge of the power storage unit to the hard disk when power supply from the computer device is stopped. Further comprising a removal prevention mechanism that prevents the hard disk carrier device from being removed from the computer device;
The time control unit cannot remove the hard disk carrier device from the computer device when power is supplied from the computer device and until a preset time elapses after the power supply from the computer device stops. State
4. The device according to claim 1, wherein when a preset time elapses after the supply of power from the computer device is stopped, the time control unit makes the hard disk carrier device removable from the computer device. 5. Hard disk connection device as described in the item. A speaker unit that emits a preset sound under the control of the time control unit;
5. The system according to claim 1, wherein when a preset time elapses after the supply of power from the computer apparatus stops, the time control unit controls the speaker unit to make a preset sound. Hard disk connection device as described in the item. A hard disk connection device according to any one of claims 1 to 5,
A hard disk carrier device including at least a hard disk connected to the hard disk connection device. When supplying power from the computer device, the power storage unit charges,
Display that the hard disk carrier device removal prohibition on the display unit,
When the supply of power from the computer device is stopped, the time control unit starts measuring the timer, the power storage unit starts discharging, and supplies power to the display unit and the time control unit,
A hard disk removal prevention method in which when the supply of power from the computer device is stopped and a preset time has elapsed, the time control unit turns off the indication that the hard disk carrier device is not removed from the display unit. 8. The preset time measured by the time control unit is set based on the time from the stop of power supply to the hard disk from the computer device until the inertia rotation of the platter in the hard disk ends and stops. Hard disk removal prevention method.   The hard disk removal prevention method according to claim 7 or 8, wherein the power storage unit includes a switch circuit that blocks leakage of electric charge to the hard disk due to discharge when supply of power from the computer apparatus is stopped and discharge is started. Further comprising a removal prevention mechanism that prevents the hard disk carrier device from being removed from the computer device;
When supplying power from the computer device, the time control unit is in a state in which the hard disk carrier device cannot be removed from the computer device,
10. The device according to claim 7, wherein when the supply of power from the computer device is stopped and a preset time has elapsed, the time control unit enables the hard disk carrier device to be removed from the computer device. Hard disk removal prevention method.

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