JP2022089001A - Key device and key management system - Google Patents

Abstract

To provide a key device that automatically detects and displays an unlocked/locked state of a lock.SOLUTION: A key device 1 comprises: a blade part 11 for unlocking/locking a cylinder lock 5; a first detection part 21 that detects that the blade part 11 has contacted and/or has approached the cylinder lock 5; a second detection part 22 that detects an unlocking action in which the blade part 11 is turned from an insertion posture to an unlock posture when inserted into a keyhole 51, or a locking action in which the blade part 11 is turned from the insertion posture to a lock posture; an operation part 23 that estimates an unlocked/locked state of the cylinder lock 5 based on a detection result of the second detection part 22 when the first detection part 21 has detected that the blade part 11 has contacted and/or has approached the lock; and a display part that displays the unlocked/locked state of the cylinder lock 5 based on an estimation result of the operation part.SELECTED DRAWING: Figure 2

Description

The present invention relates to a key device and a key management system for managing the unlocked state of a lock.

There are still many environments where cylinder locks are used instead of electronic locks, such as residential doors, office cabinets, and hotel rooms, and it is often the case that the lock is checked after locking. Whether or not the cylinder lock is securely locked is extremely important in terms of crime prevention, and neglecting to manage such information assets will lead to major problems such as a decline in trust. Therefore, in order to manage the unlocked state, a method of displaying the unlocked state on the key cover, a method of confirming the unlocked state via the network, and the like have been devised.

For example, in Patent Document 1, a display unit for displaying the unlocking / locking is provided as a storage device on the key cover, and a mechanism for the operator to manually update the unlocking / locking display is provided. Further, Patent Document 2 discloses a system in which a mechanism for communicating with a key is provided on the cylinder side and the state of the cylinder is transmitted to the key side to grasp the state of the key. Further, Patent Document 3 discloses a system in which an unlocking / locking detection mechanism is provided on the cylinder side, and the state of the cylinder can be sent to a management server via a network and confirmed from a smartphone or the like.

Utility Model Registration No. 3165216 Gazette Japanese Unexamined Patent Publication No. 2019-206890 Japanese Unexamined Patent Publication No. 2016-125263

However, in the method of manually recording the unlocked state of the lock as in Patent Document 1, if the operator forgets to record whether or not the work has been performed, the lock is eventually locked or unlocked. There is a risk that you will not know.

In the method of providing the detection mechanism on the cylinder lock side as in Patent Document 2, it is necessary to attach a dedicated device around the lock to be confirmed for unlocking and locking. Then, since a space for a dedicated device is required, it may be difficult to install it in a small cabinet or the like, for example. In addition, many general-purpose cabinets do not have a communication device, and cannot be applied to such general-purpose products. In that case, the communication device may be attached later, but there are problems such as the above-mentioned space problem and high installation cost.

In Patent Document 3, there is a problem that installation work such as wiring and wiring is required, and management after installation such as battery replacement is required. In addition, when managing the state of the cylinder lock on the network, it is necessary to prepare a management server, which incurs operational costs.

Also, in general, in devices including arithmetic units, it takes several hundred milliseconds to several seconds to start up after the arithmetic unit is turned on, so in the case of a mechanism that turns on the power after the key is inserted, during that time. When the unlocking operation is completed, the unlocked state of the lock and the state of the device attached to the key may be different. It is possible to keep the power on all the time, but if the key is not opened and closed so often, there is a problem that power consumption is wasted. Further, a motion sensor may be used, but a large-scale system is also required, and it is difficult to say that the introduction is easy, and the hurdle to use is high.

Therefore, the present invention provides a key device that automatically detects and displays the unlocked / locked state of the lock without necessarily providing a large-scale system such as a device related to unlocking or a communication device with a network on the lock side. With the goal.

The unlocking state management device and system according to one aspect of the present disclosure detect that the blade portion inserted into the keyhole of the lock to unlock the lock and the blade portion come into contact with and / or approach the lock. The first detection unit and the unlocking operation in which the blade portion is rotated from the insertion posture when the blade portion is inserted into the keyhole to the unlocking posture for unlocking the lock, or the blade portion is in the insertion posture. A second detection unit that detects a locking operation that is rotated to a locking posture for locking the lock, and a state in which the first detection unit detects that the blade unit is in contact with and / or approaches the lock. Then, when the unlocking operation is detected by the second detection unit, it is estimated that the lock is in the unlocked state, and when the locking operation is detected by the second detection unit, the lock is released. It includes a calculation unit that is estimated to be in a locked state, and a display unit that displays the unlocked / locked state of the lock based on the estimation result of the unlocked / locked state in the calculation unit.

According to this aspect, on the key device side, a first detection unit that detects that the blade unit has touched and / or approached the lock, and a second detection unit that detects an unlocking operation or a locking operation of the key device. Is provided, and the calculation unit estimates the unlocked / locked state of the lock based on the detection results of the first detection unit and the second detection unit, and displays it on the display unit. That is, in the key device, it is possible to collectively process from the detection of the state or operation to the display. As a result, it is not always necessary to provide a large-scale system on the cylinder lock side, such as a device related to unlocking and a communication device with a network, and the unlocked state of the cylinder lock can be automatically detected and displayed.

According to the key device according to the present invention, it is not always necessary to provide a large-scale system such as a device related to unlocking or a communication device with a network on the lock side, and the unlocked state of the lock is automatically detected and displayed. Can be done.

Schematic configuration diagram showing a configuration example of a key device Block configuration diagram of key device The figure for demonstrating the detection operation of the 1st detection part The figure for demonstrating the detection operation of the 1st detection part The figure for demonstrating the detection operation example of the 2nd detection part Block configuration diagram of the second detector The figure for demonstrating another example of the detection operation of the 2nd detection part The figure which shows the configuration example of the 2nd detection part and the detection operation thereof The figure which shows the configuration example of the 2nd detection part and the detection operation thereof The figure which shows the structural example of the display part The figure which shows the other configuration example of the 2nd detection part and the detection operation thereof Flow chart showing an operation example of the key device Schematic diagram showing a configuration example of a key management system Flow chart showing an example of key management system processing Schematic diagram showing other configuration examples of the key management system

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its scope of application or its use.

(First Embodiment)
<Key device>
The key device 1 of the present invention includes a blade portion 11 and a head portion 12. The key device 1 is an article that is inserted into a lock keyhole provided in "a hotel room, a residential door, a cabinet door or a sliding door of an office, etc." (hereinafter collectively referred to as a door, etc. D) to unlock. be. The type of lock is not particularly limited, but a cylinder lock is exemplified. In the following description, the lock will be described as being a cylinder lock 5 (see FIG. 3A).

-Blade part-
The blade portion 11 is inserted into the keyhole 51 (see FIG. 4) of the cylinder lock 5 (see FIG. 3A) provided in the door or the like D, and is rotated in the locking or unlocking direction to lock the door or the like. Or it has a function to unlock. The configuration and shape of the blade portion 11 are not particularly limited, and various conventionally known configurations can be adopted. The material of the blade portion 11 is not particularly limited, but is, for example, made of metal.

Here, the direction in which the blade portion 11 is inserted into the keyhole 51, that is, the direction toward the back of the keyhole 51 is called the "insertion direction", and the direction in which the key is pulled out is called the "pull-out direction". Then, the direction from the insertion posture when the blade portion 11 is inserted into the keyhole 51 toward the unlocking posture in which the cylinder lock 5 is unlocked is the "unlocking direction", and the direction from the insertion posture toward the locking posture in which the cylinder lock 5 is locked is directed. The direction is called the "locking direction".

For example, when the cylinder lock 5 has a rectangular keyhole 51 having a long side in the vertical direction shown in FIG. 4, the blade portion 11 is inserted into the keyhole 51 from the front side to the back side of the paper surface. The unlocking direction is the direction in which the head portion 12 is rotated clockwise from the insertion posture, and the locking direction is the direction in which the head portion 12 is rotated counterclockwise so as to be tilted. Depending on the configuration of the cylinder lock 5, for example, rotating the head portion 12 clockwise from the insertion posture is the locking direction, and rotating the head portion 12 counterclockwise from the insertion posture is the unlocking direction. May be.

-Head part-
The head portion 12 is provided integrally with the blade portion 11 at the end of the blade portion 11 in the pulling direction, and has a function as a grip portion to be gripped when the user P locks or unlocks the door or the like D. .. The material and size of the head portion 12 are not particularly limited. For example, when the head portion 12 is covered with one or more kinds of materials selected from the group consisting of metal, resin, and wood, the unlocking detection unit 2 described later is safely accommodated. The head portion 12 is often provided with a key ring hole 121 for passing a string, a key holder, or the like.

1 (a) to 1 (e) show a configuration example of the head portion 12. 1 (a) and 1 (b) are generally known configurations, and is an example in which the head portion 12 and the blade portion 11 are integrally made of the same material. FIG. 1A shows an example in which the unlocking detection unit 2 is housed in the head unit 12. Further, in FIG. 1B, the unlocking detection unit 2 accommodates a key holder shape (for example, a rectangular shape) attached to the tip of a ring passed through a key ring hole 121 formed at the tip end portion of the head portion 12. An example housed in the part 13 is shown. FIG. 1C shows an example in which a cover made of a material different from that of the blade portion 11 is provided so as to cover the entire head portion 12. Further, FIGS. 1 (d) and 1 (e) show an example in which the head portion 12 is configured to accommodate the blade portion 11 (hereinafter referred to as a key case shape). In FIG. 1D, the head portion 12 and the blade portion 11 are configured to be accommodated in a key case 14 provided separately from the head portion 12 and the blade portion 11. Further, in FIG. 1 (e), a storage space for the blade portion 11 is provided in the head portion 12, and the blade portion 11 can be accommodated in the accommodation space. When adopting the key case shape, the head portion 12 may be configured to accommodate a part of the blade portion 11. When the key device 1 has a size used for a general residential door, a living room, or the like, it is preferably in the shape of a key case as shown in FIGS. 1 (d) and 1 (e).

<< Unlocking detector >>
As shown in FIG. 2, the unlocking / locking detection unit 2 includes a first detection unit 21, a second detection unit 22, a calculation unit 23, and a display unit 25.

-First detector-
The first detection unit 21 detects that the blade unit 11 has "contacted and / or approached" the cylinder lock 5 (hereinafter, collectively referred to as "contact or the like"). The specific detection means such as the contact by the first detection unit 21 is not particularly limited, but for example, a capacitance sensor, a contact sensor, a pressure sensor, an acceleration sensor, a magnetic sensor, an optical sensor, a radio wave sensor, and a gyro sensor. One or more types of sensors selected from the group consisting of two or more types of sensors can be preferably used.

FIG. 3 (FIGS. 3A and 3B) shows an example of the detection means of the first detection unit 21.

For example, when a contact sensor is used as the first detection unit 21, there is a method in which the metal blade unit 11 acts as an electrode. Specifically, for example, a predetermined voltage is applied to the blade portion 11, the voltage value applied to the blade portion 11 is divided by a voltage dividing circuit, and the voltage value is read by an AD converter. Then, when the blade portion 11 comes into contact with the cylinder lock 5, the value of the AD converter changes, so that it is possible to detect that the blade portion 11 has come into contact with the cylinder lock 5 (“1. Voltage drop” in FIG. 3A. "reference).

The contact between the blade portion 11 and the cylinder lock 5 may be determined by electrically ON / OFF depending on the presence or absence of contact between the blade portion 11 and the cylinder lock 5. Therefore, instead of the method using the AD converter, the key device 1 may be provided with a switch (not shown) connected to the blade portion 11, and the state of the switch may be detected by pull-up or pull-down. There are various possible switches that operate at this time, but for example, a momentary switch that closes the contacts inside the button and conducts conduction only while the key is pressed, or a magnet sheet attached to the lock side and approached the cylinder. It can be suitably used such as a reed switch that conducts at the time.

For example, when a pressure sensor is used as the first detection unit 21, a method of detecting the pressure generated when the blade unit 11 is inserted into the cylinder lock 5 and pressed (see “2. Pressure” in FIG. 3A) can be mentioned. ).

When a pressure sensor is used as the first detection unit 21, a pressure sensor that detects the pressure by hand may be used. In this case, for example, when the user P holds the key device 1 and inserts the blade portion 11 into the keyhole 51 of the cylinder lock 5, the pressure sensor is pressed. Therefore, the blade portion 11 is pressed based on the pressing pressure. May be detected as being inserted into the cylinder lock 5. In this case, it suffices if the presence or absence of pressing force can be detected, and in addition to the piezoelectric element, a pressing switch such as a tact switch can be adopted.

For example, when an acceleration sensor is used as the first detection unit 21, there is a method of detecting the acceleration generated in the direction in which the key device 1 is inserted into the cylinder lock 5 (see “3. Acceleration” in FIG. 3A).

For example, when an optical sensor is used as the first detection unit 21, a method of detecting that the key device 1 has come into contact with the cylinder lock 5 by detecting reflected light or transmitted light can be mentioned. Specifically, for example, as shown in FIG. 3B, visible light or infrared rays are irradiated toward the cylinder lock 5 from an optical element (not shown) provided on the surface of the head portion 12 facing the cylinder lock 5. A reflective encoder that calculates the distance between the key device 1 and the cylinder lock 5 based on the detection intensity of the received reflected light may be used. Instead of the optical element, the radio wave is output toward the cylinder lock 5, and the distance between the key device 1 and the cylinder lock 5 is calculated based on the time until the reflected radio wave is received. You may.

When an optical sensor or a radio wave sensor is used as the first detection unit 21, reflection from the cylinder lock 5 or the door D may be used, but more preferably, the periphery of the cylinder lock 5 or the door D is used. May be provided with a material having a high reflectance for light or radio waves, a material having a specific reflectance for a specific wavelength or a specific frequency, and a reflective member having a specific pattern shape. For example, if the member is a seal or a paint, it is easy to introduce such a member because it is not necessary to provide a large-scale device or the like on the cylinder lock 5 side.

Although not shown, for example, when a capacitance sensor is used as the first detection unit 21, a pair electrode of the capacitance sensor is placed at a position facing the cylinder lock 5 of the key device 1 (for example, the head unit 12). It is preferable to provide one of the constituent electrodes and to provide the other electrode around the keyhole 51 of the cylinder lock 5. As a result, a capacitance is generated between the pair electrodes when the key device 1 approaches the cylinder lock 5, and the key device 1 contacts and / or approaches the cylinder lock 5 based on the value of this capacitance. Can be detected.

Further, although not shown, for example, when a geomagnetic sensor is used as the first detection unit 21, a method of detecting the orientation when the blade unit 11 is inserted into the keyhole 51 of the cylinder lock 5 can be mentioned. Further, when a gyro sensor is used as the first detection unit 21, a method of detecting the direction and angle when the blade unit 11 is inserted into the keyhole 51 of the cylinder lock 5 can be mentioned (see “3. Acceleration” in FIG. 3A). Equivalent to the case). Further, for example, a magnet or a magnetic marker such as a magnet is provided around the cylinder lock 5 or the cylinder lock 5, and by detecting this with a magnetic sensor, the key device 1 and the cylinder lock 5 come into close contact with each other or come into contact with each other. Can be detected.

It is preferable to combine two or more of the above-mentioned detection methods (detection means) as the first detection unit 21 because malfunctions are suppressed. For example, a 9-axis sensor that combines an acceleration sensor, a geomagnetic sensor, and a gyro sensor is generally available. For example, by using the 9-axis sensor as the first detection unit 21, the direction and traveling direction of the key device 1 and the impact when the blade unit 11 is inserted into the cylinder lock 5 and pushed into the back are detected. It is possible to distinguish between the unlocking operation of the key device 1 and the operation that is not unlocking.

-Second detector-
The second detection unit 22 has an unlocking operation in which the key device 1 (blade unit 11) is rotated in the unlocking direction from the insertion posture to the unlocking posture, or the key device 1 moves from the insertion posture to the locking posture. Detects the locking operation that is rotated in the locking direction. The specific means for detecting the unlocking / locking operation by the second detection unit 22 is not particularly limited, but is selected from the group consisting of, for example, a capacitance sensor, an acceleration sensor, a magnetic sensor, an optical sensor, and a gyro sensor. One type or two or more types of sensors can be preferably used.

4, FIGS. 6, and 7 (FIGS. 7A and 7B) show an example of the detection means of the second detection unit 22.

For example, when a capacitance sensor is used as the second detection unit 22, one of the electrodes constituting the pair electrode of the capacitance sensor is provided in the key device 1 (for example, the head unit 12), and the cylinder lock 5 is provided. A plurality of electrodes paired with the keyhole 51 are provided around the keyhole 51 at intervals.

Specifically, for example, as shown in FIG. 4, one of the pair electrodes 220 is provided at a position facing the cylinder lock 5 of the head portion 12. Then, around the keyhole 51 of the cylinder lock 5, (1) a position facing one electrode 220 when the key device 1 is inserted into the keyhole in the inserted posture, and (2) one electrode 220 in the unlocking posture. Electrodes 521, 522, 523 having different areas are provided as the other electrode paired with the electrode 220 at each of the position facing the electrode 220 and the position facing the one electrode 220 in the locked posture. .. As a result, one of the key device 1 is inserted into the keyhole 51 in the inserted posture, (2) in the unlocked posture, and (3) in the locked posture. Capacitances different from each other are generated between the electrode 220 and the other electrode 521, 522, 523. Therefore, the calculation unit 23, which will be described later, can detect the unlocking operation and the locking operation of the key device 1 based on the capacitance value between one electrode 220 and the other electrode 521, 522, 523. .. When using a capacitance sensor, the electrode 220 on the key device 1 side and the electrodes 521, 522, 523 on the cylinder lock 5 side are 1 mm or more with the blade portion 11 inserted in the keyhole 51. It is preferable that the electrodes are separated by a range of 10 mm or less in order to obtain a difference in capacitance for each size of the electrodes 521, 522, 523.

FIG. 5 shows an example of a circuit configuration for detecting the capacitance between one electrode 220 and the other electrode 521, 522, 523. In the example of FIG. 5, a resistor 222 is connected in series with the electrode 220, a predetermined voltage is applied from the power supply 221, and digital conversion is performed by the ADC 224 via the diode 223. Then, the conversion result in the ADC 224 is processed by the calculation unit 23.

For example, when a magnetic sensor is used as the second detection unit 22, magnetic magnetic markers such as magnets and magnets are provided at the positions of the electrodes 521, 522, 523 in FIG. 4, respectively. Then, the head portion 12 is provided with a magnetic sensor (not shown) at the position of the electrode 220, and by detecting the above magnetic marker, the unlocking operation and the locking operation of the key device 1 can be detected.

Further, when a magnetic sensor is used as the second detection unit 22, a magnet sheet on which a specific pattern is formed, for example, a magnet sheet 53 in which magnetic markers 531 are arranged at a predetermined pitch in the circumferential direction as shown in FIG. May be installed around the cylinder lock 5. As a result, the key device 1 is counted by counting the number of magnetic markers 531 that pass along with the rotation of the key device 1 by using a magnetic sensor (for example, a reed switch) provided at the position of the electrode 220 in FIG. The rotation angle of can be detected. For example, in the example of FIG. 6, the key device 1 advances 6 counts from the insertion posture to the unlocking posture / locking posture, and by detecting the advanced 6 counts, it is possible to recognize the rotation of 90 °. can.

For example, by using a gyro sensor as the second detection unit 22, the direction and angle at which the key device 1 is turned can be detected. Examples of the gyro sensor used in the second detection unit 22 include a known vibration type gyro sensor. Among them, a capacitance type gyro sensor and a piezo type gyro sensor are generally distributed and can be preferably used. Further, as shown in FIGS. 7A and 7B, a spherical, liquid, particulate or the like conductive substance 227 is arranged in a predetermined moving space 226, and the conductive substance 227 moves by changing the angle of the key device 1. It may be configured to move within space 226. Then, it may be configured to detect the rotation direction and the rotation angle of the key device 1 by detecting the movement of the conductive substance 227.

For example, when an optical sensor is used as the second detection unit 22, the movement of the key can be detected by using the reflection of light around the cylinder lock 5 or the cylinder lock 5. For example, a material having a high reflectance or a member having a pattern having a specific pattern may be provided around the cylinder lock 5 or the cylinder lock 5, whereby the angle of the key device 1 with respect to the cylinder lock 5 may be more accurately set. Can be detected.

For example, a light reflecting member having a specific pattern (a pattern having a different shape or number as shown in FIG. 4 or a regular pattern as shown in FIG. 6) is provided around the cylinder lock 5, and the position of the electrode 220 of the head portion 12 is provided. It is advisable to read this specific pattern with the optical sensor provided in. Thereby, the unlocking operation and the locking operation of the key device 1 can be detected.

The pattern of the light reflecting member provided around the cylinder lock 5 is not limited to the configuration shown in FIGS. 4 and 6, and any other pattern can be adopted. The material used as the light reflecting member is not particularly limited, but for example, a metal sheet or a white pigment (titanium oxide or the like) can be applied. Further, a light absorbing material (black pigment or the like) can be used in addition to or in place of the light reflecting member. More specifically, an aluminum etching sheet having a specific pattern can be preferably used.

Further, although not shown, for example, by using an acceleration sensor as the second detection unit 22, it is possible to detect a change in acceleration that occurs when the key device 1 is turned and a rotation direction of the key device 1. Further, by using the accelerometer, the acceleration when the key device 1 starts to be turned in the locking direction increases, the acceleration when the cylinder lock 5 starts to be locked decreases, and the cylinder lock 5 is locked. It is possible to detect an increase in acceleration at that time. Similarly, the acceleration increases when the key device 1 starts to be turned in the unlocking direction, the acceleration decreases when the cylinder lock 5 starts to be unlocked, and when the cylinder lock 5 is unlocked. It is possible to detect an increase in acceleration.

When using an accelerometer, it is preferable to mount a Kalman filter. Noise such as vibration is generated in the accelerometer, but such noise can be removed and only the information caused by the operation of the key device 1 can be extracted.

It is preferable that the second detection unit 22 can prevent erroneous detection by combining two or more of the above-mentioned detection methods (detection means). For example, a 9-axis sensor that combines an acceleration sensor, a geomagnetic sensor, and a gyro sensor is generally available. For example, by using the 9-axis sensor as the second detection unit 22, it is possible to detect the rotation direction of the key device 1, the angle of the key device 1, and the insertion / removal of the key device 1.

When such a sensor is used, it is preferable to use a Kalman filter to remove noise. Specifically, an angle error called drift occurs during use, and such an error can be suppressed by using a Kalman filter. Further, a complementary filter may be applied based on the data of the acceleration sensor and the gyro sensor. As a result, it is possible to suppress an angle detection error of the key device 1 as in the Kalman filter. More preferably, the data of the complementary filter may be combined with the data of the Kalman filter. That is, the raw data detected by the acceleration sensor is calculated by applying a Kalman filter, and the acceleration of the key device 1 is detected. On the other hand, the raw data detected by the accelerometer and the raw data detected by the gyro sensor are complementarily filtered to calculate the data. The Kalman-filtered data strongly removes noise such as vibration, while the complementary-filtered data can exaggerate the angle information due to vibration. Therefore, the Kalman-filtered data and the complementary-filtered data can be exaggerated. By comparing with, it is possible to detect the vibration caused by the catching at the time of unlocking from this difference.

-Calculation unit-
The calculation unit 23 estimates the unlocked / locked state of the cylinder lock 5 based on the detection result of the first detection unit 21 and the detection result of the second detection unit 22. More specifically, the calculation unit 23 is unlocked by the second detection unit 22 in a state where the first detection unit 21 detects that the blade unit 11 has touched and / or approached the cylinder lock 5. It is estimated that the cylinder lock 5 is in the unlocked state when is detected, and it is estimated that the cylinder lock 5 is in the locked state when the locking operation is detected by the second detection unit 22. That is, the calculation unit 23 is said to estimate the unlocked / locked state of the lock when a specific condition is satisfied. That is, the arithmetic unit 23 is an arithmetic processing device capable of executing a program, and specifically, a CPU, a microcomputer, and an IC are exemplified.

In the technique of the present disclosure, the calculation unit 23 does not estimate the unlocked / locked state of the lock only by detecting that the key has touched and / or approached the lock by the first detection unit 21, and the second detection unit 21 does not estimate the unlocked state. The feature is that the detection unit 22 does not estimate the unlocking state of the lock only by detecting the unlocking operation or the locking operation of the cylinder lock 5. That is, the calculation unit 23 is programmed so that both the first detection unit 21 and the second detection unit 22 estimate the unlocked / locked state of the cylinder lock 5 when a predetermined condition is satisfied. ..

For example, assume that the first detection unit 21 is a contact sensor and the second detection unit 22 is an acceleration sensor. In this case, the contact sensor (first detection unit 21) detects that the blade unit 11 has come into contact with the cylinder lock 5. Then, the acceleration sensor (second detection unit 22) detects that the key device 1 is inserted into the keyhole 51 of the cylinder lock 5 and then rotated in either the locking direction or the unlocking direction. Then, the calculation unit 23 estimates that the lock has been made (being in the locked state) or that the lock has been made (being in the unlocked state) based on the detection status of the contact sensor and the acceleration sensor.

Further, for example, the first detection unit 21 and the second detection unit 22 may both be optical sensors. In this case, the optical sensor (first detection unit) measures the reflected light from the cylinder lock 5 to detect that the blade unit 11 has come into contact with the cylinder lock 5. Further, the optical sensor (second detection unit) detects that the optical sensor (second detection unit) has been rotated in either the locking direction or the unlocking direction from the change in the reflected light in the rotation direction. Then, the calculation unit 23 estimates that the lock has been made (being in the locked state) or that the lock has been made (being in the unlocked state) based on the detection status of the contact sensor and the acceleration sensor. The same optical sensor may be used for the first detection unit 21 and the second detection unit 22, or different optical sensors may be used for the first detection unit 21 and the second detection unit 22. good. One optical sensor may be configured to have the functions of the first detection unit 21 and the second detection unit 22, thereby reducing the number of parts.

Further, for example, the first detection unit 21 and the second detection unit 22 may both be a 9-axis sensor including an acceleration sensor, a magnetic sensor, and a gyro sensor.

In this case, the 9-axis sensor (first detection unit 21) detects that the key device 1 advances in the insertion direction perpendicular to the direction of the lock, and the blade unit 11 is inserted into the keyhole 51 of the cylinder lock 5. Detects changes in acceleration that occur at the time. Next, the 9-axis sensor (second detection unit 22) detects that the key device 1 is rotated in either the locking direction or the unlocking direction with the key device 1 inserted in the keyhole 51. Then, the calculation unit 23 estimates that the lock has been made (being in the locked state) or that the lock has been made (being in the unlocked state) based on the detection status of the contact sensor and the acceleration sensor. Even when a 9-axis sensor is used as the first detection unit 21 and the second detection unit 22, the function of the first detection unit 21 and the function of the second detection unit 22 are the same as the above-mentioned optical sensor. May be realized by one 9-axis sensor, or 9-axis sensors different from each other may be used in the first detection unit 21 and the second detection unit 22.

The combination of the sensor used as the first detection unit 21 and the sensor used as the second detection unit 22 is not limited to the above. For example, as the first detection unit 21, one or more types of sensors selected from the group consisting of a capacitance sensor, a contact sensor, a pressure sensor, an acceleration sensor, a magnetic sensor, an optical sensor, a radio wave sensor, and a gyro sensor. As the second detection unit 22, one or more types of sensors selected from the group consisting of a capacitance sensor, an acceleration sensor, a magnetic sensor, an optical sensor and a gyro sensor can be freely combined. By using different types of sensors for the sensor used as the first detection unit 21 and the sensor used as the second detection unit 22, the function of one sensor may be lost or detection may be difficult. In some cases, the other sensor can complement or replace the function of the other sensor.

Further, the calculation unit 23 estimates the unlocked state or the locked state of the cylinder lock 5, and performs display control for displaying the estimation result of the unlocked state of the cylinder lock 5 on the display unit 25 described later.

As shown in FIG. 2, the unlocking / locking detection unit 2 may include a storage unit 24. The storage unit 24 has a function of storing the unlocked / locked state of the cylinder lock 5 estimated by the calculation unit 23. For example, when the calculation unit 23 estimates the unlocked / locked state and then estimates the unlocked / locked state again, the unlocked / locked state may be updated and the latest unlocked / locked state may be stored. As a result, it can be effectively used for estimating the operation to be performed next. Further, it is preferable that the display unit 25 can display the latest locked state stored in the storage unit 24 so that the user P of the key device 1 can confirm the unlocked state.

The storage unit 24 may be provided outside the calculation unit 23 or inside the calculation unit 23. From the viewpoint of reducing the number of parts and consuming power, it is preferable to use parts having a storage area as a storage unit 24 inside the calculation unit 23 such as an IC.

Further, the first detection unit 21 and the second detection unit 22 may each include a controller for controlling the operation, but the calculation unit 23 includes the first detection unit 21 and the second detection unit 22. It is preferable that the configuration is controllable. In this case, the calculation unit 23, for example, applies a voltage to each sensor as the first detection unit 21 and the second detection unit 22, has a function of controlling each sensor, reads a detection signal from each sensor, and the like. It will have a function.

-Display section-
The display unit 25 displays the unlocked / locked state of the cylinder lock 5 estimated by the calculation unit 23. Examples of the display unit 25 include screens such as a liquid crystal display, an OLED display, and an electronic ink (E-ink) display, as well as LEDs. 1 (c) to 1 (e) show an example in which an LED lamp is provided as a display unit 25 on the surface of the head unit 12. Further, FIG. 8 shows an example in which a display unit 25 for displaying the unlocked / locked state of the cylinder lock 5 is provided on the side surface of the head unit 12.

It is preferable to use an electronic ink (E-ink) display as the display unit 25, which does not require a backlight and keeps displaying the state until the next operation, from the viewpoint of power consumption.

-Communication unit-
As shown in FIG. 2, the unlocking / locking detection unit 2 may include a communication unit 26 configured to enable wireless communication. The communication unit 26 notifies the communication unit 64, for example, the unlocked / locked state of the cylinder lock 5 estimated by the calculation unit 23. The communication unit 26 can be realized by, for example, Bluetooth (registered trademark) or RFID.

Further, for example, when the key user P or the administrator uses the key, it may be misplaced or forgotten to be returned. In such a case, there is a possibility that the unlocked state of the cylinder lock 5 cannot be confirmed without finding the entire key device. In such a case, if the communication unit 26 is present, the location of the key device 1 can be detected by the smartphone.

Specifically, for example, a radio wave is output from the communication unit 26 of the key device 1, the received radio wave strength of the key device 1 is confirmed with a smartphone, and the distance between the smartphone and the key device 1 is determined by using, for example, a smartphone application. It may be configured to be calculable. Then, when it is detected that the communication terminal such as a smartphone possessed by the user P and the key device 1 are separated by a certain distance or more, it is regarded as a misplacement of the key device 1 and the communication terminal is notified that the key has been separated. It may be configured to do so.

-Other configurations-
In addition to the above configuration, the unlocking detection unit 2 may be provided with an activation unit composed of a push button switch or the like for activating the calculation unit 23. In the key device 1, the user P performs an operation of picking and gripping the head portion 12 (hereinafter, referred to as a gripping operation). Therefore, for example, as shown in FIG. 8, a grip sensor such as a strain sensor, a pressure sensor, a capacitance sensor, or an electric resistance type contact sensor that detects that the user P has gripped the side surface of the head portion 12 or the like. 15 may be provided, and the calculation unit 23 in the sleep state may be woken up by using the detection of the gripping operation by the user P as a trigger. Further, the sleep state may be entered after a predetermined time has elapsed after the grip by the user P is no longer detected. It is preferable to use a pressure sensor as a sensor for detecting the gripping motion. By using the pressure sensor, the key device 1 is activated when it is not necessary to estimate the unlocked / locked state of the cylinder lock 5. Can be prevented. In addition, it is possible to prevent forgetting to press the start switch when it is necessary to estimate the unlocked state, and to ensure that it operates when necessary.

Further, for example, when the blade portion 11 is provided with a configuration for accommodating the blade portion 11 as in FIGS. 1 (d) and 1 (e), the calculation is performed with the blade portion 11 being exposed so as to be insertable into the keyhole 51 as a trigger. The unit 23 may be configured to be activated.

For example, FIG. 1 (e) is configured such that the blade portion 11 can be accommodated in the head portion 12 or can be projected out of the head portion 12 by a slider mechanism. Therefore, when the user P operates the slider and the blade unit 11 jumps out of the head unit 12, the arithmetic unit 23 is waked up and activated, the slider is pulled back, and the blade unit 11 is the head unit 12. The arithmetic unit 23 can be put into a sleep state when it is housed in. As a result, the user P can start the arithmetic unit 23 only when necessary without worrying about the existence of the power supply, and can prevent a malfunction when not in use.

Further, it is preferable that the unlock / lock detection unit 2 includes a power supply unit (not shown) for supplying power. For example, it is preferable that the power supply unit is configured to be able to supply power to the first detection unit 21, the second detection unit 22, and / or the display unit 25, including the calculation unit 23. The power supply means of the power supply unit is not particularly limited, and examples thereof include a primary battery, a secondary battery, a solar cell, a piezoelectric element that converts mechanical energy into electric energy, and the like. From the viewpoint of miniaturization of the key device 1, the power supply unit is preferably made of a button battery or a small lithium ion polymer. Further, the power supply voltage of the power supply unit is not particularly limited, but preferably, if the power supply voltage is a battery in the range of 1V to 5V, a general-purpose IC and various sensors can be operated from the PIC microcomputer.

Further, the key device 1 does not have to be provided with a power supply unit. In this case, for example, a power source such as a battery is provided on the cylinder lock 5 side, and when the blade portion 11 of the key device 1 is inserted into the keyhole 51, the power supply and the unlocking / locking detection unit 2 are electrically connected. As a result, power may be supplied to the unlocking detection unit 2 to operate the calculation unit 23, the first detection unit 21, the second detection unit 22, and the display unit 25. Then, a method of ending the power supply when the estimation of the unlocked / locked state of the cylinder lock 5 is completed by the calculation unit 23 and the key is pulled out can be mentioned. In this case, if the electronic ink is used as described above, the display of the unlocked / locked state displayed on the display unit can be maintained even if the power supply is interrupted. Further, for example, a power supply for the key device 1 and a wireless power transmission unit are provided on the cylinder lock 5 side, and a wireless power receiving unit is provided on the key device 1 side to supply power to the key device 1 by wireless power supply. May be good.

Further, an identification code such as an ID or a two-dimensional bar code may be attached to the key device 1 so that the identification code can be managed by a mobile terminal device such as a smartphone or a terminal device such as a PC. By providing the identification code in this way, it is possible to input the identification code into a notebook, electronic data, or the like when the key device 1 is taken out, and to be able to identify when and who took it out. Further, by managing the holder by using the identification code at the time of delivery of the key device 1, the location of the key device 1 can be further clarified.

Further, the unlocking / locking detection unit 2 has a function of determining the unlocking / locking pattern and determining the angle in unlocking / locking, that is, the position of the unlocking posture or the position of the locking posture is stored in advance or changed later. It may have a function to do so.

Generally, the key device 1 is a type in which the blade portion 11 is rotated 90 ° from the position of the insertion posture in which the blade portion 11 is inserted into the keyhole 51 of the cylinder lock 5, unlocked, returned to the original position, and removed (see FIG. 9A). ), Rotate 180 ° in the same procedure to unlock, return to the original position and pull out (see Fig. 9 (b)), rotate to near 360 ° in the same procedure to unlock and lock. There are various types (see FIG. 9 (c)) in which the key is inserted back into the keyhole of the lock, that is, the insertion posture is also various in the horizontal direction and the vertical direction orthogonal to the horizontal direction.

Therefore, for example, in the unlocking / locking detection unit 2, the unlocking / locking pattern is stored in the storage unit 24, and the unlocking / locking pattern stored in the storage unit 24 by the second detection unit and the calculation unit 23 is stored in the unlocking / locking state of the cylinder lock 5. It may be used for the estimation of. Further, for example, the unlocking / locking pattern registered in the storage unit 24 may be configured to be changeable by operating an operation unit (not shown) such as a button or a dial. Further, the key device 1 may be provided with a slot for inserting a retrofit component (not shown), and for example, a retrofit component having a plurality of circuit patterns having different internal resistances may be set in the slot. Then, the user P may select a retrofit component according to the unlocking / locking pattern of the target lock and incorporate the retrofit component. Then, a part for incorporating the retrofit component is connected to the arithmetic unit 23, the arithmetic unit 23 reads the voltage divided by applying a voltage to the retrofit component, and the unlocking / locking selected by the user P according to the change in the voltage. The pattern may be determined. As a result, the calculation unit 23 can determine the unlocking / locking pattern selected by the user P based on the change in the voltage value, and can determine the position and angle of the insertion posture, the unlocking posture, and / or the locking posture in the unlocking / locking posture.

<< Operation of unlocking detector >>
FIG. 10 is a flowchart showing an operation example of the unlock / lock detection unit. Here, the key device 1 will be described assuming that it has the configuration shown in FIG. That is, it is assumed that the grip sensor 15 and the display unit 25 are provided on the side surface of the unlock / lock detection unit 2. Further, it is assumed that the unlocking / locking detection unit 2 is equipped with a retrofit component for discriminating the above-mentioned unlocking / locking pattern.

First, in step S1, when the grip sensor 15 detects that the key device 1 is gripped by the user P, the process proceeds to step S2, and the calculation unit 23 is activated.

When the calculation unit 23 is activated in step S2, the calculation unit 23 applies a voltage to the retrofitted component to read the unlocking / locking pattern of the target key device 1. Further, the calculation unit 23 restores the environment for estimating the unlocked / locked state of the cylinder lock 5 based on the unlocking / locking pattern read from the retrofitted component and the previous setting information stored in the storage unit 24. Let me. When the environment restoration is completed, the process proceeds to step S3, and the unlocked state of the cylinder lock 5 can be estimated (input can be accepted).

In step S4, the first detection unit 21 determines whether or not the blade unit 11 has come into contact with the cylinder lock 5 within an arbitrarily set predetermined time. If it is not detected that the blade portion 11 is in contact with the cylinder lock 5 within a predetermined time (NO in step S4), the calculation unit 23 is in the unlocked state of the previous cylinder lock 5 stored in the storage unit 24. Is displayed on the display unit 25 (step S7). On the other hand, when it is detected that the blade portion 11 is in contact with the cylinder lock 5 within a predetermined time (YES in step S4), the process proceeds to step S5, and the blade portion is used for an arbitrarily set predetermined time or longer. It is determined whether or not the contact between the 11 and the cylinder lock 5 is continuing.

When it is detected in step S5 that the contact between the blade portion 11 and the cylinder lock 5 continues for a predetermined time or longer, the process proceeds to step S6. On the other hand, when the contact or the like is completed in less than a predetermined time, that is, when it is presumed that the blade portion 11 has been pulled out from the keyhole 51 of the cylinder lock 5, the process proceeds to the above-mentioned step S7.

In step S6, the second detection unit 22 is activated, and the rotation of the key device 1 from the insertion posture to the unlocking posture or the locking posture can be detected. In this way, by receiving the detection result of the first detection unit 21 and activating the second detection unit 22, it is possible to prevent erroneous detection from occurring in the second detection unit 22. In addition, the power consumption of the unlocking detection unit 2 can be reduced. In general, the key device 1 has a total length of about several cm and the head portion 12 is also small, so that the batteries that can be mounted are limited. Therefore, reduction of power consumption is extremely important.

In the next step S8, it is determined whether or not the unlocking direction or locking direction operation is detected by the second detection unit 22. Then, when it is detected that the blade unit 11 has changed from the inserted posture to the unlocked posture or changed from the inserted posture to the locked posture (YES in step S8), the calculation unit 23 operates the key device 1. Assuming that the unlocked / locked state of the cylinder lock 5 corresponding to the direction is estimated, the unlocked / locked state stored in the storage unit 24 is updated (step S9). After the unlocked state is updated, the process returns to step S5 described above.

Further, in step S8, for example, it was not detected that the insertion posture was changed to the unlocking posture or the insertion posture was changed to the locking posture until a predetermined time arbitrarily set elapses. If (NO in step S8), the process returns to step S5 described above.

Then, when the process of step S5 to step S9 is repeated and the blade portion 11 is pulled out from the keyhole 51, a NO determination is made in step S5, and the process proceeds to step S7 and is estimated immediately before being stored in the storage unit 24. The unlocked / locked state of the cylinder lock 5 is displayed on the display unit 25.

"Example"
The key device 1 shown in FIG. 8 was assembled with the following configuration, and an operation experiment of the key device 1 was performed.
-Grip sensor 15: Pressure sensor-Calculation unit 23 and storage unit: SoC microcontroller (ESP32 (manufactured by Espressif Systems))
・ First detection unit 21: reed switch ・ Second detection unit 22: gyro sensor ・ Display unit 25: E-ink display ・ Parts for determining unlocking / locking pattern: resistance 1kΩ
-Power supply: Li polymer battery (1000mAh)

As a result of conducting an experiment with the above configuration, the key device 1 which is rotated 90 ° in FIG. 9A to unlock, the key device 1 which is rotated 180 ° in FIG. 9B to unlock, and FIG. It was possible to determine whether the key device 1 was unlocked or locked by rotating it to around 360 ° in (c), and it was possible to display the unlocked / locked state on the display unit 25.

As described above, in the key device 1 of the present embodiment, it is not always necessary to provide a large-scale system such as a device related to unlocking or a communication device with a network on the cylinder lock 5 side, and the cylinder lock is unlocked. Can be automatically detected and displayed.

(Second embodiment)
In the key device 1 shown in the first embodiment described above, it is easy to confirm the unlocked state of the cylinder lock 5 at a glance. However, when a plurality of keys are centrally managed, such as when there are a plurality of similar cabinets (library stacks), the relationship between the key device 1 and the cabinet 7 corresponding to the key device is systematized. It is desirable to manage as.

<Key management system>
FIG. 11 is a schematic diagram showing a configuration example of a key management system. FIG. 11 shows an example in which the key device 1 of FIG. 1 (c) is used as the key device 1.

As shown in FIG. 11, the key management system is used, for example, to grasp and manage the unlocked state of a plurality of cabinets 7A to 7X arranged side by side in an office or the like. In the following description, when the cabinets 7A to 7X are described without particular distinction, they are simply referred to as the cabinet 7.

In the example of FIG. 11, the key management system is provided with a plurality of cabinets 7, a plurality of key devices 1 for unlocking / locking the cylinder lock 5 of each cabinet 7, and a plurality of keys 1 corresponding to each cabinet 7. A storage box 6 for housing the key device 1 of the above is provided. Since the configuration and operation of each key device 1 are the same as those in the above-described first embodiment, the differences will be mainly described here.

As shown in FIG. 11, the storage box 6 can open / close or lock the front door 61 by unlocking / locking the cylinder lock 5 by using the key device 1 like the other cabinet 7. You can do it.

The storage box 6 is provided with hooks 62 for hanging and storing the key device 1 side by side on the front side of the back plate 60, and a box-side display unit for displaying the unlocked / locked state of the key device 1. 65 is provided. Then, when the front door 61 of the storage box 6 is opened, the state in which each key device 1 is hooked on the hook 62 and the display content of the display unit 25 can be confirmed at a glance from the front. Further, in the storage box 6, the unlocked state of the cylinder lock 5 estimated by the calculation unit 23 from the communication unit 26 (corresponding to the communication unit on the key device side) of each key device 1, that is, the unlocking / locking state of each cabinet 7. A box-side communication unit 64 for receiving the state is provided. The unlocked state of each cabinet 7 received by the box-side communication unit 64 is displayed on the box-side display unit 65, transmitted to the external mobile terminal device 81 or the terminal device 82, and displayed on their display screens. To.

<< Operation of key management system >>
FIG. 12 is a flowchart showing the operation of the key management system. Here, it is assumed that the key devices 1A, 1B, ..., 1X corresponding to the plurality of cabinets 7A, 7B, ..., 7X are hung on the hooks 62A, 62B, ..., 62X of the storage box 6, respectively. (Step SA1. SB1, ..., SX1).

First, in the storage box 6, for example, the cabinets 7A, 7B corresponding to the communication units 26 of the key devices 1A, 1B, ..., 1X from the box-side communication unit 64 at predetermined intervals set arbitrarily. , ..., Sends a signal to confirm the unlocked / locked state of 7X. Hereinafter, it is simply referred to as "key status confirmation".

Then, the key devices 1A, 1B, ..., 1X return the unlocked / locked status of the latest cabinets 7A, 7B, ..., 7X stored in the storage unit 24 at that time ("key status confirmation (1)". reference). Then, the box-side communication unit 64 reflects the unlocked state of the received cabinets 7A, 7B, ..., 7X on the display of the box-side display unit 65, or the external mobile terminal device 81 or the external terminal device 82 (hereinafter,). , Collectively referred to as "terminal device 8"). If there is no change in the unlocked / locked state of the cabinets 7A, 7B, ..., 7X, the transmission to the terminal device 8 may not be performed (see "Key status confirmation (2)"). In addition, the timing for checking the unlocked state of the cabinets 7A, 7B, ..., 7X is limited to the case where the key device 1 is taken out or stored only when the front door 61 is opened. You may.

Here, for example, it is assumed that the key devices 1A and 1B are taken out from the storage box 6. Then, in the confirmation of the unlocked / locked state of the cabinets 7A, 7B, ..., 7X from the next box-side communication unit 64 to the key devices 1A, 1B, ..., 1X, the key device 1 is taken out from the key devices 1A, 1B. This is notified to the box-side communication unit 64 (see "Key status confirmation (3)"). The box-side communication unit 64 reflects the unlocked / locked state of the updated cabinets 7A, 7B, ..., 7X on the display of the box-side display unit 65, or transmits the updated cabinets 7A, 7B, ..., 7X to the terminal device 8. For example, in the box-side display unit 65, the color and shape of the identifier displayed on the key devices 1A and 1B are changed.

After that, it is assumed that the cabinet 1A is unlocked by the key device 1A, and the key device 1A is returned to the storage box 6 with the cabinet 1A unlocked. Then, in the next "key status confirmation", the box-side communication unit 64 is notified that the unlocked key device 1 has been returned to the key device 1A (see "key status confirmation (4)"). .. The box-side communication unit 64 reflects the unlocked / locked state of the updated cabinets 7A, 7B, ..., 7X on the display of the box-side display unit 65, or transmits the updated cabinets 7A, 7B, ..., 7X to the terminal device 8. For example, in the box-side display unit 65, the color and shape of the identifier displayed on the key devices 1A and 1B are changed.

In FIG. 11, the identifier corresponding to the position of the key device 1A in which the cabinet 7 is unlocked is shown by dot patching. FIG. 11 shows an example in which the key device 1A and two additional key devices 1 are returned in the unlocked state.

Then, it is assumed that the key device 1B is not returned to the storage box 6 even after the lapse of an arbitrarily set predetermined time. Then, in the "key status confirmation" after a predetermined time has elapsed since the key device 1B was taken out, it is notified that the key device 1B has not been returned for the predetermined time (see "key status confirmation (5)"). .. In FIG. 11, since the key device 1B has not been taken out and returned, the identifier of the position corresponding to the key device 1B is filled in. At this time, the terminal device 8 may notify the user P and the administrator of an alarm by sound or display regarding the non-storage of the key device 1B.

<< Modification example >>
FIG. 13 shows an example in which the key device 1 of FIG. 8 is used as the key device 1 in the key management system.

In FIG. 13, since the unlocked / locked state of the cabinet 7 is displayed on the surface of the key device 1 itself, the unlocked / locked state of each cabinet 7 can be known at a glance, so that the box-side display unit 65 is omitted. Other configurations are the same as in FIG. 11, and the same effect as in FIG. 11 can be obtained.

The present invention is extremely useful because it can automatically detect and display the unlocked state of the lock.

1 Key device 5 Cylinder lock (lock)
11 Blade unit 21 First detection unit 22 Second detection unit 23 Calculation unit 25 Display unit 65 Display unit (box side display unit)

Claims (5)

The blade part that is inserted into the keyhole of the lock to unlock the lock,
A first detection unit that detects that the blade unit has touched and / or approached the lock, and
An unlocking operation in which the blade portion is rotated from an insertion posture when it is inserted into the keyhole to an unlocking posture for unlocking the lock, or a locking posture in which the blade portion locks the lock from the insertion posture. A second detector that detects the locking operation that is rotated to
The lock is unlocked when the unlocking operation is detected by the second detection unit while the blade unit is detected by the first detection unit to be in contact with and / or approach the lock. A calculation unit that estimates that the lock is in the locked state when the locking operation is detected by the second detection unit.
A key device including a display unit that displays the unlocked / locked state of the lock based on the estimation result of the unlocked / locked state in the calculation unit. The first detection unit is one or more types of sensors selected from the group consisting of a capacitance sensor, a contact sensor, a pressure sensor, an acceleration sensor, a magnetic sensor, an optical sensor, a radio wave sensor and a gyro sensor. The key device according to claim 1, wherein the key device is characterized by the above. The first detection unit and the second detection unit are at least one type or two or more types of sensors such as a capacitance sensor, an acceleration sensor, a magnetic sensor, and a gyro sensor.
The calculation unit estimates that the blade unit has contacted and / or approached the lock based on the change in the movement direction and the movement speed of the key device detected by the first detection unit, and the second unit. The key device according to claim 1 or 2, wherein the unlocking operation or the locking operation is estimated based on the result of the rotation direction and the rotation angle of the key device detected by the detection unit. The key device according to claim 1, wherein the function of the first detection unit and the function of the second detection unit are realized by one optical sensor or one nine-axis sensor. A containment box for accommodating multiple key devices,
The plurality of key devices according to any one of claims 1 to 4 are provided as the plurality of key devices housed in the storage box.
Each of the key devices further includes a communication unit on the key device side.
The storage box includes a box-side communication unit that receives an estimated unlocked state of the lock in the calculation unit from the key device-side communication unit of each key device, and a box side that displays the unlocked / locked state of the lock. A key management system characterized by having a display unit.

Images