JP2003184363A - Key safekeeping device and management machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key safekeeping device 31 which can safekeep a key in a locking state, can restrict persons capable of opening a lock with a key, and can identify the person who has opened the lock, by keeping a history of opening the lock with the key. <P>SOLUTION: This key safekeeping device 31 derives power from a battery 55. A cylinder, into which the key is inserted, is locked by an electrical drive means 49; and the key is safekept in a locked state. Unlocking information, which unlocks a cylinder and allows the identification of an individual, is preregistered in a registration means 62. If the unlocking information input by an input means 40 is the unlocking information preregistered in the registration means 62, the cylinder is unlocked by the drive mans 49, and the key is removed from the cylinder. The history, including the unlocking information, of opening the lock with the key is managed by being stored in a history management means 63. The persons capable of opening the lock with the key are restricted only to the ones who preregisters the unlocking information, and the person who has opened the lock is identified by the history of opening the lock with the key. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key storage device and a management machine for storing keys.

[0002]

2. Description of the Related Art Conventionally, a plurality of important keys such as a key for operating a processing device and a key for opening and closing a management place are used in a financial institution or a distribution institution. In order to restrict or leave a key use history, for example, a management machine disclosed in Japanese Patent Publication No. 7-103723 is used to manage keys by electronic control.

In such a management machine, since the locking / unlocking operation is performed by electronic control using a commercial power source, it cannot be unlocked by a normal operation in an emergency such as a power failure or an electrical failure. In order to deal with such an emergency, it is possible to manually unlock the management machine using an emergency key. The emergency key can be stored by one specific custodian or several people. Persons have adopted a method such as keeping on duty.

[0004]

However, in the above-mentioned emergency, if the person who stores the emergency key is not at the location of the management machine, the management machine cannot be unlocked and the key managed by the management machine cannot be used. However, there is a problem that the storage of important emergency keys is a burden on the custodian.

In consideration of such a case, if the emergency key is not stored by a specific custodian but is stored in a place where anyone can freely take it out, the emergency key is stored in an emergency. Even if there is no person, the emergency key can be used to unlock the management machine, but there is a problem that it is not possible to determine who used the emergency key afterwards.

The present invention has been made in view of the above point, and the key is stored in a locked state to limit the persons who can unlock the key, and who unlocks the key with a history of unlocking the key. It is an object of the present invention to provide a key storage device and a management device that can identify the key.

[0007]

According to a first aspect of the present invention, there is provided a key storage device, wherein a key can be inserted / removed in an unlocked state, and a key is locked so that the key cannot be removed in a locked state. Electric driving means for locking, a power source unit to which a battery is detachably mounted, registration means for previously unlocking personally identifiable unlocking information for unlocking the cylinder, and input means for inputting unlocking information And a control means for unlocking the cylinder by the electric drive means when unlocking information registered in advance in the registering means is input from the inputting means, and unlocking information input from the inputting means. And a history management unit that stores and manages the history of unlocking the key.

In this structure, the battery is used as the power source,
The key inserted in the cylinder is stored in a locked state, and the cylinder is unlocked when the personally identifiable unlocking information registered in advance in the registering means is input from the inputting means, and is also input from the inputting means. Since the history of key unlock including the unlock information is stored and managed in the history management means, the unlocking of the key is limited to the unlockable persons who have registered the unlock information in advance, and the unlocking of the key can be performed. From the history, who unlocked is specified.

According to a second aspect of the present invention, there is provided a key storage device according to the first aspect, wherein the key storage device has an opening on one surface, a cylinder and an input means are provided inside, and the key inserted into the cylinder is It comprises a key storage device main body that can be housed, and a lid body that is provided so that an opening of the key storage device main body can be opened and closed and that a power supply unit to which a battery is detachably mounted is disposed on the back surface. It is a thing.

In this structure, since the cylinder and the input means are arranged inside the key storage device main body which is opened and closed by the lid and the key inserted in the cylinder is accommodated, the key and the input means are covered. Since the power source unit is provided on the back surface of the lid body that is protected and is detachably mounted, the battery can be easily attached and detached.

According to a third aspect of the present invention, there is provided the key storage device according to the first or second aspect, wherein the cylinder locks the key so that the key can be inserted and removed and the key cannot be removed. A lock mechanism is provided that enables the key to be rotated with respect to the second rotation position and locks and unlocks the cylinder at the second rotation position by an electric drive means. .

Further, in this structure, the cylinder is operated to rotate the key between the first rotation position where the key can be inserted and removed and the second rotation position where the key cannot be removed. Since the lock is made possible and the electric drive means and the lock mechanism lock and unlock the lock in this second position, the key is reliably locked and unlocked.

A key storage device according to a fourth aspect of the present invention is the key storage device according to any one of the first to third aspects, wherein the key storage device has a detection means for detecting the rotational position of the cylinder, and the control means is the cylinder by the detection means. When the rotation of the cylinder to the second rotation position is detected, the cylinder is locked by the electric drive means, and the unlocking of the key is detected by the rotation detection of the cylinder to the first rotation position.

In this structure, since the detecting means for detecting the rotational position of the cylinder is provided, when the rotational movement of the cylinder to the second rotational position is detected, the cylinder is locked by the electric driving means, and The unlocking of the key is detected by detecting the rotation to the first rotation position.

According to a fifth aspect of the present invention, there is provided a key storage device according to any one of the first to fourth aspects, wherein the key is a lock / unlock operation under electronic control using a commercial power source to manage a managed object. It is an emergency key to unlock the machine manually.

Further, in this configuration, the key to be stored is an emergency key for manually unlocking the management machine that locks and unlocks by electronic control using a commercial power source to manage the managed object. It is not necessary for a specific custodian to store it, and the burden is reduced.

According to a sixth aspect of the present invention, there is provided a management machine main body which locks and unlocks by electronic control using a commercial power source to manage managed objects and which can be manually unlocked by an emergency key.
The key storage device according to any one of claims 1 to 4, which is provided integrally with the management machine main body and stores the emergency key.

Further, in this configuration, the emergency key is stored in the management machine main body which is locked and unlocked by electronic control using a commercial power source to manage the management object and which can be manually unlocked by the emergency key. Since the key storage device described in any one of 1 to 4 is provided integrally, it is easy to identify the storage location of the emergency key, and it becomes easy to respond to emergencies such as power failure or electrical failure, and the emergency key can be specified. The custodian does not have to keep it, which reduces the burden.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

1 to 12 show a first embodiment.

As shown in FIG. 3, the management machine 11 manages important objects such as keys, cards and documents by electronic control, and operates using a commercial power supply.

The management machine 11 has a management machine body 12, and a key storage section 13 for storing a plurality of keys is provided on the upper surface side of the management machine body 12.
A card storage unit 14 for storing cards and storage units 15, 16 for storing other important items are disposed on the front side of the management machine body 12. The keys 17, the cards 14, and the storages 15, 16 have doors 17, 18, respectively.
19 and 20 are provided so that they can be opened and closed, and these doors 17, 18, 19 and
Reference numeral 20 is a locking mechanism provided with an electric drive unit such as a motor and a solenoid, and is locked and unlocked.

An operation unit 21 is provided on the front side of the upper part of the management machine main body 12. The operation unit 21 has a card reader 22 through which a specific card for unlocking operation is inserted, a code number for unlocking operation, and the like. An operation key 23 for inputting a personal identification number, a display 24 for displaying an input number, a printer 25 for printing out history, etc. are provided.

A door 17 of the key storage unit 13 is provided on the side of the management unit body 12.
A cylinder 26 for unlocking manually is disposed,
This cylinder 26 is unlocked by an emergency key 27 as a key.

2 and 4 to 12 show a key storage device 31 for storing the emergency key 27. The key storage device 31 is separate from the management machine 11 and is near the location of the management machine 11, for example. It is installed on the wall. The key storage device 31 has a key storage device body 32 and a lid 33 which is attached to the front surface of the key storage device body 32 so as to be openable and closable, and the key storage device body 32 is housed in a case 34.

The key management device main body 32 has a box shape having a storage portion 35 inside, an opening portion 36 is formed on the front surface, and a flange portion 37 is formed on the outer peripheral edge of the front end. An operation surface 38 is formed on the inner surface of the storage section 35.
A cylinder 39 that allows the emergency key 27 to be inserted and removed and locks and unlocks, an input unit 40 having a keyboard including a numeric keypad, and a display unit 41 including a liquid crystal display and the like are provided.

The cylinder 39 is a keyhole into which the emergency key 27 is inserted and removed.
A lever 43 is attached to the rear end thereof and is rotated by the emergency key 27 inserted in the key hole 42. As shown in FIGS. 5 to 8, when the lever 43 is oriented in the horizontal direction, the emergency key 27 is set to the first pivot position so that the emergency key 27 can be inserted into and removed from the key hole 42. With the lever 43 turned upward from the first turning position by about 90 °, the emergency key
The second rotation position locks 27 so that it cannot be pulled out, and the emergency key 27, the cylinder 39, and the lever 43 are rotatable between the first rotation position and the second rotation position. .

A detection means 44 is provided for detecting the rotational position of the cylinder 39, and the detection means 44 detects the rotation of the lever 43 to the first rotational position.
1. It has a micro switch SW2 for detecting that the lever 43 has rotated to the second rotation position.

A locking mechanism 45 for locking and unlocking the cylinder 39 at the second rotation position via the lever 43 is arranged at a position facing the lever 43 rotated to the second rotation position. It is set up. The locking mechanism 45 serves as a pair of cam plates 47 and 48 that rotate together around the cam shaft 46, and an electric drive unit that integrally rotates the pair of cam plates 47 and 48 through the cam shaft 46. It has a motor 49. Each cam plate 47, 48
Is a disk shape, and four notches 50 are formed on the peripheral edge at equal intervals of 90 °. It is attached to the shaft 46. One cam plate 47 facing the lever 43 rotated to the second rotation position locks the adjacent notches 50.
The notch 50 functions as a locking member, and the tip end of the lever 43 is rotatable through the notch 50 with the turning position where the notch 50 faces the lever 43 as the lock releasing position. The lever 43 is set at the pivotal position facing the lever 43 at the moving position as the locking position.
The leading end of the contact is restricted by the locking portion 51 so that it can be locked at the second position.

Microswitches SW3 and SW4 are arranged so as to face the outer peripheral portions of the cam plates 47 and 48, and one cam plate 47 is provided.
When the notch 50 of the micro switch SW3 is in the unlocked position facing the lever 43, the detection lever 52 of the one microswitch SW3 enters the notch 50 of the one cam plate 47 for detection, and the engagement of the one cam plate 47 is detected. At the locking position where the stopper 51 faces the lever 43, the detection lever 53 of the other micro switch SW3 is moved to the notch 50 of the other cam plate 48.
Enter and detect.

The lid 33 is openably and closably supported by a hinge 54, and a power source portion 56 to which a battery 55 is detachably attached is arranged on the back surface. As the battery 55, a plurality of AA dry batteries, which are generally widely distributed and easily available, are used. The power supply unit 56 has a battery box 57 that detachably accommodates the battery 55, and the power of the battery 55 mounted in the battery box 57 is used as the power source of the key storage device 31.

FIG. 1 shows a block diagram of the key storage device 31, 61 is a control means, and this control means 61 has an input means 4
0, registration means 62, history management means 63, microswitch SW1
~ SW4, the display means 41 and the motor 49 as an electric drive means are connected, and these are operated by using the battery 55 of the power source unit 56 as a power source.

The registration means 62 is for previously registering unlocking information that allows the cylinder 39 to be unlocked and which allows personal identification.
A plurality of unlockable persons who can unlock 39 and use the emergency key 27 are defined, and for each unlockable person, personal identification information of the unlockable person and unlocking information such as a personal identification number are input to the input means 40. You can register by entering. The number of persons who can be unlocked is not limited to one person, but is determined by multiple persons, so that there is an unlockable person at the location of the management machine 11 in an emergency such as a power failure or an electrical failure of the management machine 11. The possibility can be increased.

The history management means 63 stores and manages the history of unlocking the emergency key 27 including the unlock information and the date and time input from the input means 40.

These registration means 62 and history management means 63
Is an EP-RO that enables data to be stored without power supply.
It is composed of a storage medium such as M or a recording medium for magnetically recording such as a tape or a disk.

The display means 41 displays the current date and time, the entered unlocking information, and the like.

Then, the control means 61 controls the motor 49 to lock the cylinder 39 when the rotation of the cylinder 39 in which the emergency key 27 is inserted to the second rotation position is detected, and causes the registration means 62 to advance. When the registered unlocking information is input from the input means 40, the cylinder 39 is unlocked, and the cylinder 39 is unlocked.
Has a function of detecting unlocking of the emergency key 27 by detecting rotation of the emergency key 27 to the first rotation position. Further, the control means 61 is
It also has a clock function.

Next, the operation of this embodiment will be described.

A case where the emergency key 27 of the management machine 11 is stored in the key storage device 31 will be described.

In the state before the emergency key 27 of the key storage device 31 is stored, the cylinder 39 is at the first rotation position where the emergency key 27 can be inserted and removed, as shown in FIGS. The detection lever 52 of the micro switch SW3 enters into the notch 50 of one cam plate 47 to detect it, and one notch of this cam plate 47
50 is in the unlocked position facing the lever 43 of the cylinder 39, and the rotation of the lever 43 between the first rotation position and the second rotation position is allowed.

Further, a plurality of unlockable persons who can unlock the cylinder 39 and use the emergency key 27 are determined, and for each unlockable person, the individual identification information of the unlockable person and the personal identification number are unlocked. Information is input by the input means 40, and the unlocking information is registered by the registration means 62.
Register in advance.

Then, the lid 33 of the key storage device 31 is opened, the battery 55 is attached to the battery box 57 on the back surface of the lid 33 if the battery 55 is not attached, and the emergency key 27 is set to the first rotation position. After inserting the cylinder 39 into the key hole 42 of the cylinder 39, the cylinder 39 is rotated together with the emergency key 27 by about 90 ° from the first rotation position to the second rotation position.

As shown in FIGS. 9 to 12, the emergency key 27
At the same time, by rotating the cylinder 39 to the second rotation position, the lever 43 of the cylinder 39 is moved to the micro switch SW2.
push. The control means 61 detects that the cylinder 39 has been rotated to the second rotation position by the micro switch SW2, and thereby drives the motor 49 to rotate in one direction, thereby causing the cam plate to move.
Rotate 47 and 48 in one direction. Cam plates 47 and 48 are approximately 45 °
When rotated, the detection lever 53 of the microswitch SW4
Enters the notch 50 of the other cam plate 48 and detects it, and the control means 61 stops the motor 49. In this state, the engaging portion 51 between the adjacent notches 50 of the one cam plate 47 faces the lever 43 rotated to the second rotation position, and the lever 43 is directed to the first rotation position. Restricted rotation. Therefore, the cylinder
39 is locked in the second rotation position, and the emergency key 27 is locked so that it cannot be removed from the cylinder 39.

If necessary, the battery 55 is removed, the lid 33 is closed, and the storage is completed. Since the emergency key 27 is rarely used for removing the battery 55, it may be left unused for a long period of time.
It is possible that liquid will leak from 55, and the purpose is to prevent these.

In the event of a power failure or electrical failure of the management machine 11, the emergency key 27 is taken out from the key storage device 31, the emergency key 27 is inserted into the cylinder 26 of the management machine 11 and manually unlocked.

To take out the emergency key 27 from the key storage device 31, the lid 33 of the key storage device 31 is opened, and the battery 55 is attached to the battery box 57 on the back surface of the lid 33 or the battery 55 is installed. Even if it is displayed, whether or not the power is consumed is confirmed by whether or not the display is made on the display means 41. If not, the battery 55 is attached, and if the battery 55 is exhausted, the battery 55 is replaced.

After confirming the battery 55, the person who can unlock the input means 40
Enter the unlock information such as PIN.

If the control means 61 collates the unlocking information input by the inputting means 40 with the unlocking information registered in the registering means 62 and determines that the unlocking information matches the registered unlocking information,
The motor 49 is rotationally driven in one direction to rotate the cam plates 47 and 48 in one direction. When the cam plates 47 and 48 rotate by about 45 °, the detection lever 52 of the micro switch SW3 enters into the notch 50 of one cam plate 47 to detect it, and the control means 61 stops the motor 49. In this state, the notch portion 50 of the one cam plate 47 faces the lever 43 in the second rotation position.
The rotation of 43 toward the first rotation position is allowed.

The emergency key 27 can be used by pulling out the emergency key 27 from the key hole 42 of the cylinder 39 by rotating the cylinder 39 together with the emergency key 27 from the second rotation position toward the first rotation position by approximately 90 °. Becomes

When the cylinder 39 turns to the first turning position, the lever 43 pushes the microswitch SW1. The control means 61 detects that the emergency key 27 has been unlocked by the micro switch SW1, and the history of unlocking the emergency key 27 including the unlock information and the date and time input by the input means 40 is history management means.
It is stored in 63 and managed.

As described above, in the key storage device 31, the battery 55 is used as a power source, the emergency key 27 inserted in the cylinder 39 is stored in a locked state, and the personal identification unlocking registered in the registration means 62 in advance is performed. The cylinder 39 is unlocked when the information is input from the input means 40, and the history of unlocking the emergency key 27 including the unlock information input from the input means 40 is recorded in the history management means 63.
Since the emergency key 27 is unlocked and managed, it is possible to limit the unlocking of the emergency key 27 only to the unlockable persons who have registered the unlocking information in advance, and it is possible to specify who unlocked the emergency key 27 from the unlocking history.

This means that the number of persons who can unlock the lock is not limited to one person, but is determined by a plurality of persons so that the location of the management machine 11 can be set in an emergency such as a power failure or an electrical failure of the management machine 11. It is possible to increase the possibility that there is a person who can unlock, and then it is possible to identify who unlocked it from the history of unlocking the emergency key 27.
Therefore, it is not necessary for a specific custodian to store the emergency key 27 as in the conventional case, and the burden can be reduced.

Further, since the cylinder 39 and the input means 40 are arranged inside the key storage device main body 32 which is opened and closed by the lid 33 and the emergency key 27 inserted in the cylinder 39 is accommodated, the emergency key 27 and the input are input. Since the means 40 can be covered and protected, and further, the power supply portion 56 to which the battery 55 is detachably mounted is arranged on the back surface of the lid 33, the battery 55 can be easily attached and detached.

Further, the cylinder 39 rotates the emergency key 27 between a first rotational position where the emergency key 27 can be inserted and removed and a second rotational position where the emergency key 27 is locked so that it cannot be removed. The emergency key 27 can be locked and unlocked reliably because it can be operated dynamically and is locked and unlocked by the locking mechanism 45 having the motor 49 at this second position.

Further, since the detection means 44 for detecting the rotation position of the cylinder 39 is provided, the cylinder 39 is locked when the rotation of the cylinder 39 to the second rotation position is detected, and the first rotation of the cylinder 39 is detected. The unlocking of the emergency key 27 can be detected by detecting the rotation to the moving position.

Next, FIGS. 13 and 14 show a second embodiment.

In this embodiment, the key storage device 31 is integrally arranged on the front surface of the management machine body 12.

In this way, the key storage device 31 is installed in the management machine main body 12
By integrally arranging it on the front surface of the emergency key 27, the storage location of the emergency key 27 can be easily understood and it is possible to easily cope with an emergency such as a power failure or an electrical failure.

The battery 55 is not limited to a dry battery, and may be a relatively easily available portable battery or a rechargeable secondary battery, and similar effects can be obtained.

The cylinder 39 is configured to rotate between a first rotation position where the emergency key 27 can be inserted and removed and a second rotation position where the emergency key 27 is locked so that it cannot be removed. , Emergency key
The emergency key 27 that is inserted may be locked and unlocked by an electric drive means only by inserting the same, and the same action and effect can be obtained.

Further, in each of the above-described embodiments, the key stored in the key storage device is used for electronically controlling the lock / unlock operation by electronic control using the commercial power source to manually unlock the management machine for managing the managed object. Although it was a key, it can also be used to store other important keys, not just the emergency key of the management machine.

[0062]

According to the key storage device of the first aspect of the present invention, the unlocking information which is stored in the cylinder as a power source, stores the key inserted in the cylinder in a locked state, and which is registered in advance in the registration means is identifiable. When the key is input from the input means, the cylinder is unlocked, and the history of key unlock including the unlock information input from the input means is stored and managed in the history management means. It is possible to limit the unlocking information to only those who can be unlocked in advance, and it is possible to specify who unlocked from the key unlock history.

According to the key storage device of the second aspect, in addition to the effect of the key storage device of the first aspect, the cylinder and the input means are arranged inside the key storage device body opened and closed by the lid. Since the key inserted in the cylinder is stored together with it, the key and the input means can be covered and protected, and the power supply section to which the battery is detachably mounted is arranged on the back surface of the lid, so that the battery can be easily attached and detached. You can

According to the key storage device of the third aspect, in addition to the effect of the key storage device of the first or second aspect, the cylinder has the first rotation position at which the key can be inserted and removed and the key. Since the key can be rotated between the second rotation position where the key is locked so that it cannot be pulled out, and the locking and unlocking is performed by the electric drive means and the locking mechanism at the second position, the key is locked. Can be securely locked and unlocked.

According to the key storage device of the fourth aspect, in addition to the effect of the key storage device according to any one of the first to third aspects, there is a detection means for detecting the rotational position of the cylinder. When the rotation of the cylinder to the rotation position of 2 is detected, the cylinder is locked by the electric drive means,
The unlocking of the key can be detected by detecting the rotation of the key to the rotation position.

According to the key storage device of claim 5, in addition to the effect of the key storage device according to any one of claims 1 to 4, the key to be stored is locked and unlocked by electronic control using a commercial power supply. It is an emergency key for manually unlocking the management machine that manages managed items, and it is not necessary for a specific custodian to store this emergency key, and the burden can be reduced.

According to the management machine of the sixth aspect, the emergency key is provided in the main body of the management machine in which the lock / unlock operation is performed by electronic control using a commercial power source to manage the management object and the emergency key can be manually unlocked. Since the key storage device according to any one of claims 1 to 4 for storing the key is integrally provided, it is possible to easily know the storage location of the emergency key and to easily cope with an emergency such as a power failure or an electrical failure. In addition, it is not necessary for a specific custodian to store the emergency key, and the burden can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram of a key storage device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the same key storage device.

FIG. 3 is a perspective view of a management machine to which the same key storage device is applied.

FIG. 4 is a front view of the same key storage device with a lid omitted.

FIG. 5 is a sectional view of the key storage device in the unlocked state.

FIG. 6 is a rear view of the key storage device in the unlocked state.

FIG. 7 is a sectional view of the same key storage device seen from the right side in an unlocked state.

FIG. 8 is a sectional view of the key storage device as seen from the left side in the unlocked state.

FIG. 9 is a sectional view of the same key storage device in a locked state.

FIG. 10 is a rear view of the same key storage device in a locked state.

FIG. 11 is a sectional view of the key storage device as seen from the right side in the locked state.

FIG. 12 is a sectional view of the same key storage device as seen from the left side in a locked state.

FIG. 13 is a perspective view of a management machine integrally provided with a key storage device according to a second embodiment of the present invention.

FIG. 14 is a perspective view of the same key storage device.

[Explanation of symbols]

11 Management machine 12 Management machine body 27 Emergency key as a key 31 Key storage device 32 Key storage device 33 Lid 36 openings 39 cylinders 40 Input means 44 Detection means 45 Locking mechanism 49 Motors as electric drive means 55 batteries 56 Power supply 61 Control means 62 means of registration 63 History management means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yuji Takahashi             System 3-14-11, Kotobuki, Taito-ku, Tokyo             Mu Research Manufacturing Co., Ltd.

Claims (6)

[Claims] 1. A cylinder in which a key can be inserted / removed in an unlocked state and locked in a locked state so that the key cannot be removed, an electric drive means for locking / unlocking the cylinder, and a battery detachably mounted. A power source unit, registration means for registering unlocking information for personally unlocking the cylinder in advance, input means for inputting unlocking information, unlocking information registered in advance for the registering means Control means for unlocking the cylinder by the electric drive means when is input from the input means, and a history for storing and managing a history of unlocking the key including unlock information input from the input means. A key storage device comprising: management means. 2. A key storage device main body having an opening on one surface, in which a cylinder and an input means are disposed, and capable of accommodating a key inserted in the cylinder, and an opening of the key storage device main body. 2. The key storage device according to claim 1, further comprising: a lid body that is openable and closable and that has a power supply unit on the back surface to which a battery is detachably attached. 3. The cylinder allows the key to be rotated between a first rotation position where the key can be inserted and removed and a second rotation position where the key cannot be removed. 3. The key storage device according to claim 1, further comprising a locking mechanism that locks and unlocks the cylinder at the second rotation position by the mechanical driving means. 4. A detection means for detecting the rotation position of the cylinder is provided, and the control means locks the cylinder by an electric drive means when the detection of the rotation of the cylinder to the second rotation position by the detection means. 4. The key storage device according to claim 1, wherein unlocking of the key is detected by detecting rotation of the cylinder to the first rotation position. 5. The key is an emergency key for manually unlocking a management machine that locks and unlocks by electronic control using a commercial power source and manages a managed object. Key storage device as described. 6. A management machine main body which locks and unlocks by electronic control using a commercial power source to manage managed objects and which can be manually unlocked by an emergency key, and which is provided integrally with this management machine body, A management machine comprising the key storage device according to any one of claims 1 to 4, which stores the emergency key.