JP6684663B2 - Unlocking device, unlocking method and unlocking program - Google Patents

Description

  The present invention relates to an unlocking device, an unlocking method, and an unlocking program for unlocking a locking device.

  As a general safe lock device, there is a lock device having a structure in which a dial lock and a cylinder lock are combined. The dial lock includes a plurality of discs that rotate in accordance with the rotation of the dial, and each of the discs has a cutout. For example, when the dial is turned to the correct number such as four times to the right, three times to the left, two times to the right, and once to the left, the notches of the disks are aligned. The cylinder lock has a structure in which the insertion piece advances toward the peripheral edge of the disk when the key is inserted and rotated.

  When the positions of the cutouts of the plurality of disks are not aligned, the insert piece hits the peripheral edge of the disks and does not enter the cutouts, so the key cannot be rotated sufficiently and the cylinder lock cannot be unlocked. When the dial is turned according to the correct answer number, all the notches of the disc are aligned and the key can be rotated until the insertion piece fits in the matched notches, so that it can be unlocked.

Japanese Utility Model Publication No. 2-20379

  There is an unlocking device that can be unlocked by attaching to the safe when the safe cannot be unlocked because the correct answer number is unknown. This unlocking device tries to insert the insertion piece by rotating the key while changing the combination of the cutout positions of the plurality of disks by rotating the dial. While the positions of the notches are not aligned, the insertion piece hits the peripheral edge of the disc and cannot be unlocked as described above. When the positions of the notches are aligned, the insertion piece enters the notches, and the key is unlocked by turning to the unlock position. In other words, by rotating the dial and sequentially changing the combination of the positions of the notches within the brute force or within the designated range, the operation of turning the key is performed step by step, whereby it is possible to finally reach the position where the notches are aligned.

  For example, with the notch of the three discs maintained at a specific position, every time the other disc is rotated by a predetermined amount and then stopped, the key is turned to try to insert the insertion piece. If unlocking is not possible even if the trial is performed by rotating the other one disk once, the positions of the notches of the three disks are changed, and then the other one disk is rotated once again. When the positions of the cutouts of the three discs are aligned, the cutouts of the four discs are aligned during one round of the other disc, so that the insertion piece can be inserted and unlocked. .

  However, in such an unlocking device, the insertion piece repeatedly collides with the peripheral edge of the disc until all the cutouts of the disc are aligned. Then, for example, even if the three disks are set at specific positions, the impact of the insertion pieces causes the positions of the disks to shift. Then, for example, after the positions of the notches of the three discs are aligned, the positions of the notches of the three discs may be displaced due to the collision of the insertion piece during the trial while rotating the other disc. There is a nature. If such a shift occurs, the cutouts will not be aligned even if the other disc makes one round, and eventually the unlocking will not be possible.

  The present invention has been proposed in order to solve the problems of the prior art as described above, and an object thereof is to prevent the disc notch from being displaced during the trial of unlocking and to improve the possibility of unlocking. An object is to provide an unlocking device, an unlocking method, and an unlocking program that can be improved.

  In order to achieve the above object, in the unlocking device of the present invention, when the positions of the cutouts of the plurality of discs rotated by the dials match, the insertion piece is inserted into the cutouts by the rotation of the key and unlocked. An unlocking device for unlocking a locking device, wherein a combination of a dial drive unit for rotating the dial, a key drive unit for rotating the key, and a position of the notch of the plurality of disks is changed. As described above, the dial drive unit is configured to rotate the dial, and the key drive unit is configured to rotate the key to test whether the insertion piece can be inserted into the notch. A trial unit and a correction unit for instructing the dial driving unit to realign the positions of the cutouts of the disk during a plurality of trials.

  The correction section may instruct the realignment every time one of the disks makes a round.

  One of the plurality of discs is a drive disc that drives the other disc in accordance with the rotation of the dial, and the correction unit instructs the realignment every time the drive disc makes one revolution. You may.

  The correction unit may instruct the realignment according to the number of times the trial unit tries.

  In the unlocking method of the present invention, when the positions of the notches of the plurality of discs rotated by the dial are aligned with each other, the insertion piece is inserted into the notches and unlocked by the rotation of the key. In the locking method, a computer or an electronic circuit connected to a dial drive unit for rotating the dial and a key drive unit for rotating the key is a combination of positions of the notches of the plurality of disks. In order to change, the rotation instruction processing for instructing the dial driving section to rotate the dial, and whether or not the key driving section rotates the key to determine whether the insertion piece can be inserted into the notch. A trial process for making a trial and a correction process for instructing the dial driving unit to realign the positions of the cutouts of the disk are executed between the trial processes a plurality of times.

  The unlocking program of the present invention unlocks a locking device that causes the insertion piece to be inserted into the notch by the rotation of the key and unlocked when the positions of the notches of the plurality of discs rotated by the dial match with the computer. An unlocking program for locking, wherein a combination of the positions of the cutouts of the plurality of disks is connected to the computer connected to a dial drive unit for rotating the dial and a key drive unit for rotating the key. Rotation instruction processing for instructing the dial driving unit to rotate the dial so that the key changes, and whether the insertion piece can be inserted into the notch by rotating the key by the key driving unit. And a correction process for instructing the dial driving unit to realign the positions of the cutouts of the disk between the trial processes of a plurality of times.

  According to the present invention as described above, it is possible to provide an unlocking device, an unlocking method, and an unlocking program, which can prevent the disc from being dislocated during trial unlocking and increase the possibility of unlocking. You can

Front view of a safe using a locking device having a dial section Side sectional view (A) and front view (B) showing the dial portion of the locking device Explanatory drawing showing the unlocking procedure of the locking device Explanatory drawing which shows operation | movement of the key part of a locking device. Explanatory drawing which shows the link mechanism of the key part of the locking device. The front view which shows the attachment state to the safe of the unlocking device of embodiment. Side sectional view showing a dial drive unit of the unlocking device Partial cross-sectional side view showing the key drive unit of the unlocking device Block diagram showing a control device for controlling the unlocking device Explanatory drawing showing the unlocking procedure of the unlocking device Flow chart showing the unlocking procedure of the unlocking device Explanatory diagram showing an unlocking procedure including a correction operation of the unlocking device Explanatory diagram showing an unlocking procedure including a correction operation of the unlocking device Flowchart showing another unlocking procedure of the unlocking device Explanatory drawing which shows the unlocking procedure including the other correction operation of an unlocking device.

Embodiments of the present invention will be described with reference to the drawings.
[safe]
First, the safe 100 to which the present embodiment is applied will be described with reference to FIG. In the following description, the front side of the safe 100 may be called the front side and the back side may be called the back side. The safe 100 has a main body 11 and a door 12. The main body 11 is a rectangular parallelepiped casing having an opening on the front side. The door 12 has a rectangular shape with a size that closes the front opening of the main body 11. When viewed from the front, the right side of the door 12 is attached by a hinge 121 to the right edge of the opening so as to rotate about an axis. As a result, the door 12 is opened to the right.

[Locking device]
The locking device 200 is the object of unlocking according to the present embodiment, and is provided on the door 12 of the safe 100. The locking device 200 has a dial section 210 and a key section 220.

(Dial part)
As shown in FIGS. 2A and 2B, the dial part 210 has a fixed part 211, a dial 212, a shaft 213, a drive part 214, and a rotating part 215. The fixed portion 211 has a fixed plate 211a, a shaft cylinder 211b, and a locking ring 211c.

  The fixed plate 211a is a disk-shaped member and is fixed to the door 12 of the safe 100. A reference line C indicating the reference position of the turning amount of the dial 212, which will be described later, is formed on the upper edge of the fixed plate 211a. The shaft cylinder 211b is a cylindrical member whose one end extends horizontally in the back side of the safe 100. The other end of the shaft cylinder 211b penetrates the door 12 and is continuous with the fixed plate 211a, and a hole penetrating the center of the fixed plate 211b communicates with the inside of the shaft cylinder 211b. The locking ring 211c is an annular member that is provided on the inner side of the barrel 112 and is fixed so as to expand the barrel 112.

  The dial 212 has a knob 212a and a display 212b. The knob portion 212a is a columnar member, and a side surface thereof is formed with a non-slip groove over the entire circumference. The display portion 212b is a substantially frustoconical portion in which one end of the knob portion 212a has an enlarged diameter. As shown in FIG. 2B, a scale S that serves as a guide for the amount of rotation is provided on the front surface of the display unit 1212b over the entire circumference. In the present embodiment, the scale S from 0 to 9 that divides the entire circumference into 10 equal parts is provided. The unit width of the scale S is an example for simplifying the description, and may be larger or smaller.

  The shaft column 213 is a columnar member provided in the axial direction of the dial 212, and one end thereof is fixed to the center of the dial 212 on the back surface side. The shaft column 213 is inserted into the shaft cylinder 112 through the hole at the center of the fixed plate 111, so that the dial portion 12 is rotatably supported by the fixed portion 11. The other end of the shaft column 213 projects from the end of the shaft cylinder 112.

  The drive unit 214 has a disk D1 and a fixture 214a. The disk D1 is a disk-shaped member. The disc D1 has a notch N1 and a protrusion P1 as shown in FIGS. 2 (A) and 3 (A). The notch N1 is a trapezoidal defect portion provided at one location around the disk D1. The protrusion P1 is a protruding portion provided at one location on the front surface of the disc D1.

  The fixture 214a is a tubular body, and fixes the disc D1 to the end of the shaft column 213 protruding from the end of the shaft cylinder 211b. Since the center of the disk 151 is fixed to the shaft 213 by a fixing tool 214a, it is rotatably provided together with the shaft 213 which is rotated by the dial 212. In this embodiment, the relationship between the rotation amount of the dial 212 and the disc D1 is one to one. The disk D1 is a drive disk that drives disks D2 to D4 described later according to the rotation of the dial 212.

  The rotating portion 215 has disks D2, D3, D4, a washer 215a, and a coil spring 215b. The disks D2, D3, D4 are disk-shaped with a slightly smaller diameter than the disk D1. The disks D2, D3, D4 all have the same diameter, and the shaft cylinder 211b between the disk D1 of the drive unit 214 and the locking ring 211c is provided in the center hole of each of the disks D2, D3, D4. By being inserted so as to be arranged in this order, they are rotatably provided independently of the barrel 211b.

  A disc D2 adjacent to the disc D1 is provided with a notch N2 and protrusions Pa2 and Pb2 as shown in FIGS. 2 (A) and 3 (A). The notch N2 is a trapezoidal defect portion provided at one location around the disk D2. The protrusion Pa2 is a protruding portion provided at one location on the back surface of the disc D2. The protrusion Pb2 is a protruding portion provided at one location on the front surface of the disc D2.

  A disc D3 adjacent to the disc D2 is provided with a notch N3 and protrusions Pa3 and Pb3 as shown in FIGS. 2 (A) and 3 (A). The notch N3 is a trapezoidal defect portion provided at one location around the disk D3. The protrusion Pa3 is a protruding portion provided at one location on the back surface of the disc D3. The protrusion Pb3 is a protruding portion provided at one location on the front surface of the disc D3.

  As shown in FIGS. 2A and 3A, the disc D4 on the locking ring 211c side is provided with a notch N4 and a projection Pa4. The notch N4 is a trapezoidal defect portion provided at one location around the disk D4. The protrusion Pa4 is a protruding portion provided at one location on the back surface of the disc D4.

  The protrusion P1 of the disc D1 contacts the protrusion Pa2 of the disc D2 and biases the disc D2 as the disc D1 rotates. The projection Pb2 of the disk D2 contacts the projection Pa3 of the disk D3 and biases the disk D3 as the disk D2 rotates. The protrusion Pb3 of the disc D3 contacts the protrusion P4 of the disc D4 and biases the disc D4 according to the rotation. When the protrusion P1 and the protrusion Pa2 are separated, the disc D1 rotates independently of the disc D2. When the protrusion Pb2 and the protrusion Pa3 are separated, the disc D2 rotates independently of the disc D3. When the protrusion Pb3 and the protrusion P4 are separated, the disc D3 rotates independently of the disc D4.

  The washer 215a is a ring-shaped member, is interposed between the disks D1, D2, D3, and D4, and the barrel 211b is inserted into each of them. Further, the coil spring 215b is inserted with the barrel 1 between the disc D4 and the locking ring 215b, and biases the discs D2, D3, and D4 toward the disc D1 side. The washer 214a maintains the distance between the disks D1, D2, D3, D4 biased by the coil spring 215b and smoothens the rotation of the disks D1, D2, D3, D4.

(Key part)
As shown in FIG. 4, the key portion 220 has a cylinder lock 221, a link mechanism 222, an insertion piece 223, and a dead bolt 224. The cylinder lock 221 has an outer cylinder 221a fixed to the safe 100 and an inner cylinder 221b that can rotate. When the key K is inserted into the key hole 221c of the inner cylinder 221b, an internal pin (not shown) moves up and down according to the groove of the key K, so that the cylinder lock 221 has a pin at the boundary between the inner cylinder 221b and the outer cylinder 221a. When the boundaries match, the inner cylinder 221b can rotate.

  The link mechanism 222 is connected to the inner cylinder 221b, and as shown in FIGS. 4B and 4C, the inner cylinder 221b is rotated and the insertion piece 223 is moved in the horizontal direction, and the dead bolt 224 is horizontally moved. Move in the direction. The insertion piece 223 moves in a direction projecting toward the peripheral edges of the disks D1 to D4 when the inner cylinder 221b is rotated clockwise in the drawing by the key K. As shown in FIG. 4C, the protrusion amount of the insertion piece 223 has such a length that it can be inserted into the notches N1 to N4 of the disks D1 to D4 that coincide with the unlocked positions. However, as shown in FIG. 4B, when the notches N1 to N4 do not coincide with the unlocked positions, the rotation amount of the inner cylinder 221b is regulated by hitting at least one outer edge of the disks D1 to D4. Here, the unlocked position is a position where the insertion piece 223 can be inserted, and the agreement with the unlocked position means that all the notches N1 to N4 are aligned and the insertion piece can be inserted. In this case, nothing is present between the notches N1 to N4 when viewed from the front. It should be noted that even if they are coincident with each other, it is sufficient that the insertion pieces 223 are aligned so that they can be inserted for unlocking, and some deviation is allowed.

  As shown in FIG. 4 (A), the dead bolt 224 is engaged with the lock hole 11a formed in the main body 11 of the safe 100 when locked. As shown in FIGS. 4B and 4C, when the inner cylinder 221b is rotated clockwise by the key K, it is disengaged from the lock hole 11a formed in the main body 11 of the safe 100.

  When the key K is rotated in the unlocking direction, that is, clockwise, when the cutouts N1 to N4 are aligned as shown in FIG. 4C, the insertion piece 223 enters the cutouts N1 to N4. Since the inner cylinder 221b is rotated and the dead bolt 224 is disengaged from the lock hole 11a, it can be unlocked. However, as shown in FIG. 4B, when the cutouts N1 to N4 are not aligned, the insertion piece 223 abuts the outer circumference of the disks D1 to D4, and the rotation of the inner cylinder 221b is restricted. Cannot be unlocked because it cannot be removed from the lock hole 11a.

  A more specific configuration example of the link mechanism 222 will be described with reference to FIG. FIG. 5 is a view of FIG. 4 viewed from the back side. That is, the link mechanism 222 has the movable plate 225 and the cam plate 226. The movable plate 225 is provided on the back side of the door 12 of the safe 100 so as to be slidable in the horizontal direction. A horizontal elongated hole 225a is formed in the movable plate 225, and a pin 225b provided on the back surface of the door 12 is inserted into the elongated hole 225a. The movable plate 225 is guided by the pin 225b and horizontally moves within the range of the length of the elongated hole 225a.

  An insert piece 223 is provided at one end of the movable plate 223 in the horizontal direction, and a dead bolt 224 is provided at the other end. Therefore, when the movable plate 223 moves in the direction in which the insertion piece 223 projects, the dead bolt 224 moves in the direction in which it is pulled. When the movable plate 223 moves in the direction in which the insertion piece 223 is pulled, the dead bolt 224 moves in the protruding direction.

  The cam plate 226 is an eccentric cam rotatably provided together with the inner cylinder 221b of the cylinder lock 221. The cam plate 226 is provided with a pin 226a at a portion that bulges away from the rotation shaft of the inner cylinder 221b. The pin 226a is inserted into an elongated hole 225c provided in the movable plate 225 in a vertical direction. When the cam plate 226 is rotated by the rotation of the inner cylinder 221b, the movable plate 225 moves in the horizontal direction because the pin 226a biases the elongated hole 225c.

  With the above configuration, when the key K is rotated in the unlocking direction (clockwise in FIG. 4) as described in FIGS. 4A, 4B, and 4C, the inner cylinder 221b rotates. Therefore, as shown in FIGS. 5A and 5B, the cam plate 226 rotates (counterclockwise in FIG. 5), and the cam plate 226 urged by the pin 226a moves in the horizontal direction. The insertion piece 223 projects and the dead bolt 224 is pulled in.

[Unlocking device]
The unlocking device 300 of the present embodiment will be described with reference to FIGS. 6 to 9. In the unlocking device 300, as described above, when the positions of the cutouts N1 to N4 of the plurality of disks D1 to D4 rotated by the dial 212 are aligned, the insertion piece 223 is cut out by the rotation of the key K. It is a device for unlocking a locking device 200 that is inserted into N4 and unlocked. The unlocking device 300 repeatedly attempts to insert the insertion piece 223 while rotating the dial 212 to search for the unlocking position. As shown in FIG. 6, the unlocking device 300 has a dial driving unit 310, a key driving unit 320, and a control device 330.

(Dial drive)
The dial driving unit 310 is a device that rotates the dial 212. The dial driving unit 310 has a holding unit 311, a motor 312, and a fixing unit 313. As shown in FIG. 7, the holding portion 311 has a bottomed cylindrical shape, and is a member that holds the holding portion 212a by fitting it so as to cover the holding portion 212a of the dial 212 and fixing it with a screw 311a. The motor 312 is a drive source in which the holding portion 311 is connected to the rotation shaft, and the dial 212 is rotated by rotating the holding portion 311. This rotation amount is adjusted depending on which number on the scale S is matched with the reference line C (see FIG. 2).

  The motor 312 performs intermittent rotation according to the interval of the scale S or seamless rotation in which the motor 312 rotates from the position of the specific scale S to the position of the specific scale S without stopping. Further, the motor 312 rotates in both forward and reverse directions. As the motor 312, for example, a stepping motor can be used.

  As shown in FIGS. 6 and 7, the fixed portion 313 has a support plate 313a, an arm 313b, a leg portion 313c, and a mounting portion 313d. The support plate 313a is a plate that is interposed between the grip portion 311 and the motor 312 in a direction parallel to the front surface of the door 12 and supports and fixes the motor 312. The rotation shaft of the motor 312 penetrates the support plate 313a and is connected to the holding portion 311. As shown in FIG. 6, the arms 313b are plates extending radially from the peripheral edge of the support plate 313a in three directions when viewed from the front. As shown in FIG. 7, the leg portion 313c is a rod-shaped member attached to the back surface of the end portion of the arm 313b and extending in the direction orthogonal to the door 12. The attachment portion 313d is a member fixed to the tip of the leg portion 313c and attached to the door 12 by a disk-shaped permanent magnet.

(Key drive)
The key driving unit 320 is a device that rotates the key K. As shown in FIGS. 6 and 8, the key driving section 320 has a gripping section 321, a solenoid 322, a supporting section 323, and a connecting section 324. As shown in FIG. 8, the grip portion 321 is a member that grips the key K inserted into the key hole 221c of the key portion 3. The grip portion 321 has a cylindrical shape and is formed with a slit into which a head serving as a handle of the key K is inserted. The solenoid 322 is a drive source in which the grip portion 321 is connected to the rotation shaft and the grip portion 321 is rotated to reciprocally rotate the key K by a predetermined amount.

  That is, as shown in FIG. 4 (B), when the insertion piece 223 stops by hitting one of the edges of the disks D1 to D4, it returns to the initial position shown in FIG. 4 (A), and at the next timing, As shown in FIG. 4B, the insertion piece 223 is moved again toward the edges of the disks D1 to D4. When the insertion piece 223 enters the notches N1 to N4 while repeating this, as shown in FIG. 4C, the rotation amount of the key K increases, and the solenoid 322 stops.

  As shown in FIG. 8, the support portion 323 is a plate that is interposed between the grip portion 321 and the solenoid 322 in a direction parallel to the front surface of the door 12 to support and fix the solenoid 322. The rotary shaft of the solenoid 322 penetrates the fixed portion 423 and is connected to the grip portion 321. As shown in FIG. 6, the connecting portion 324 is a member that connects the supporting portion 323 to the fixed portion 313 of the dial driving portion 310.

(Control device)
The control device 330 is a device that controls the operations of the dial driving unit 310 and the key driving unit 320. That is, the control device 330 is connected to the motor 312 and the solenoid 322, which are drive sources, and controls the respective rotations to perform the unlocking operation. The control device 330 can be realized by, for example, a dedicated electronic circuit or a computer operating with a predetermined program. The control device 330 includes a CPU and the like to perform an arithmetic operation necessary for the processing of the unlocking device 300, a memory including a memory to store various information necessary for the processing, and a driver to be controlled. It has an interface for controlling signal conversion and input / output with and.

  More specifically, as shown in FIG. 9, the control device 330 is configured by each unit having the following functions. Note that an unlocking method in which a computer or an electronic circuit executes the function of each unit as described below and an unlocking program that causes the computer to execute the function of each unit are also aspects of the present invention. That is, the control device 330 includes a storage unit 31, a rotation instruction unit 32, a trial unit 33, a stop unit 34, a start processing unit 35, a correction unit 36, a mode switching unit 37, and an interface unit 38. The storage unit 31 stores various settings necessary for the processing of this embodiment. The rotation instruction unit 32 instructs the dial drive unit 310 to rotate the dial 212 so that the combination of the positions of the cutouts N1 to N4 of the disks D1 to D4 changes. That is, the rotation instruction unit 32 rotates the rotary shaft of the motor 312 in a set amount and direction to rotate the dial 212 and sequentially change the combination of the positions of the notches N1 to N4. As described above, this rotation may be intermittent or seamless. The direction of rotation may be clockwise or counterclockwise when viewed from the front. The unit of intermittent rotation is the amount of rotation corresponding to the units 1 to 10 of the scale S. The stop position of the seamless rotation is also any position corresponding to the units 1 to 10 of the scale S.

  The storage unit 31 stores a rotation pattern of the dial 212 from the initial position of each of the disks D1 to D4 until the combination of the positions of all the notches N1 to N4 is completed as a data table. For this reason, it is possible to return to any combination even while the unlock position is being searched.

  The trial unit 33 causes the key driving unit 220 to rotate the key K to try whether the insertion piece 223 can be inserted into the notches N1 to N4. The trial here means to test whether or not unlocking is possible. That is, the trial unit 33 rotates the solenoid 322 in the forward direction to rotate the key K in the unlocking direction, and moves the insertion piece 223 toward the disks D1 to D4. The trial unit 33 detects the amount of rotation of the solenoid 322 and rotates the solenoid 322 in the opposite direction when the insertion piece 223 hits the peripheral edge of one of the disks D1 to D4 and unlocking is not achieved. Then, the insertion piece 223 is returned to the initial position (see FIGS. 4A, 4B, and 4C).

  The stopping unit 34 stops the search operation when the lock can be unlocked. That is, when the trial unit 33 detects that the solenoid 322 has rotated until the insertion piece 223 enters the notches N1 to N4 of the disks D1 to D4, the stop unit 34 determines that the unlocking has been completed and stops the search operation.

  The start processing unit 35 causes the rotation instruction unit 32 to rotate the motor 312 so that the disks D1 to D4 are at the start position of the unlocking operation. This starting position is an initial position which is a starting point of rotation of all the disks D1 to D4, a position corresponding to a specific unlocking number when it is known, and a position corresponding to the number when the search is interrupted during the search. There are various cases such as the interrupted position. The storage unit 31 stores the start position.

  The correction unit 36 instructs the dial drive unit 310 to realign the positions of the cutouts N1 to N4 of the disks D1 to D4 during a plurality of trials. Here, the realignment means that at least one position of the notches N1 to N4 is set to a correct stop position. In this embodiment, the correct stop position is a position corresponding to 1 to 10 on the scale S. That is, even if any of the notches N1 to N4 are coincident with each other in the unlocked position, when the subsequent trial is repeated, the insertion piece 223 collides with the peripheral edges of the disks D1 to D4, and thus the notches N1 to N4. There will be a shift in N4. Therefore, the instruction of the correction unit 36 causes the motor 312 to rotate so as to realign the notches N1 to N4. This rearrangement is based on the rotation pattern corresponding to the positions of the disks D1 to D4 immediately before the start of the rearrangement among the rotation patterns stored in the storage unit 31 after the disks D1 to D4 are once set to the initial positions. Then, the dial 212 is rotated so as to return to the state immediately before the start of realignment.

  The mode switching unit 37 switches the mode in which the correction unit 34 performs rearrangement. This mode includes a first mode and a second mode. The first mode is a mode in which any one of the disks D1 to D4 performs realignment every one revolution. For example, in the present embodiment, the first mode is set to perform realignment every time the disk D1 makes one revolution. The second mode is a mode in which correction is made according to the number of times the trial unit 33 tries. For example, the present embodiment is set to perform realignment every five trials. The storage unit 31 stores the first mode and the second mode.

  The interface unit 38 includes a driver for driving the motor 312 and the solenoid 322, and the like, and controls the motor 312 and the solenoid 322 as described above between the rotation instruction unit 32, the trial unit 33, and the correction unit 36. Input and output signals.

  The control device 330 further includes an input unit 39a and an output unit 39b. The input unit 39a is an input device such as a switch, a touch panel, a keyboard, a mouse, or the like for the operator to input information necessary for the operation of the unlocking device 300. Using the input unit 39a, the operator can input a start position, a mode selection, a known dial number, and the like. The output unit 39b is an output device such as a screen interface for information input, a display for displaying the state of the device, a lamp, a meter, and the like.

[Unlock operation]
(Manual unlocking operation)
In order to manually unlock the locking device 200, a regular dial number and a regular key are required. The regular dial number is a number that allows the notches N1 to N4 to coincide with the unlock position by rotating the scale S of the dial 212 in accordance with the number. The regular key K is a key that can rotate the inner cylinder 221b of the key portion 220. The locking device 200 is a device having a double defense in that it cannot be unlocked unless the dial number and the key K are available.

  A procedure for manually unlocking the locking device 200 will be described with reference to FIG. In this embodiment, the dial number is 6 → 3 → 8 → 1 as an example. The unlocked positions of the notches N1 to N4 are the 9 o'clock direction of the timepiece when viewed from the front.

  As shown in FIG. 3A, by rotating the dial 212 three times in the clockwise direction in the drawing and aligning 0 of the scale S with the reference line C, the disks D1 and D2 are set to the initial positions. In this initial position, the protrusion P1 of the disc D1 contacts the protrusion Pa2 of the disc 2, the protrusion Pb2 of the disc D2 contacts the protrusion Pa3 of the disc D3, and the protrusion Pb3 of the disc D3 contacts the protrusion P4 of the disc D4. This is the position where when the dial 212 is rotated clockwise, the protrusion P1 urges the protrusion Pa2, the protrusion Pb2 urges the protrusion Pa3, and the protrusion Pb3 urges the protrusion P4.

  From this initial position, as shown in FIG. 3B, the dial 212 is rotated clockwise to set the scale S to 6. This is stopped in the middle of the fourth rotation in addition to the three rotations for the initial position. As a result, the disk D1 rotates clockwise, and the disks D2, D3, and D4 urged by the disk D1 also rotate clockwise, and the notch N4 of the disk D4 comes to the unlocked position.

  Next, as shown in FIG. 3C, the dial 212 is rotated counterclockwise two turns, and the scale S is adjusted to 3 on the third turn. By rotation of two counterclockwise turns, the projection P1 of the disk D1 contacts the projection Pa2 of the disk 2 and the projection Pb2 of the disk D2 contacts the projection Pa3 of the disk D3 from the direction opposite to that of FIG. 3B. By further adjusting the scale S to 3 on the third lap, the disk D rotates counterclockwise until the notch N3 reaches the unlocked position. However, since the protrusion Pb3 of the disc D3 is separated from the protrusion P4 of the disc D4, the disc D4 does not rotate and the notch N4 remains in the unlocked position.

  Further, as shown in FIG. 3 (D), the dial 212 is rotated clockwise once, and the scale S is adjusted to 8 on the second cycle. By rotating one turn clockwise, the protrusion P1 of the disc D1 comes into contact with the protrusion Pa2 of the disc 2 from the direction opposite to that of FIG. 3C, and by further adjusting the scale S to 8 on the second turn, The disk D2 rotates clockwise until the notch 2 reaches the unlocked position. However, since the protrusion Pb2 of the disc D2 is separated from the protrusion Pa3 of the disc D3, the disc D3 does not rotate and the notch N3 remains in the unlocked position. Since the disk D3 does not rotate, the disk D4 also does not rotate and the notch N4 remains in the unlocked position.

  Further, as shown in FIG. 3 (E), the dial 212 is rotated counterclockwise to set the scale S to 1. As a result, the disc D1 rotates counterclockwise until the notch N1 reaches the unlocked position. However, since the protrusion P1 of the disc D1 is separated from the protrusion Pa2 of the disc D2, the notch N2 remains in the unlocked position without rotating the disc D2. Since the disk D2 does not rotate, the disks D3 and D4 also do not rotate, and the notches N3 and N4 remain in the unlocked position. As a result, the cutouts N1 to N4 all coincide with the unlocked position.

  In this state, when the regular key K is inserted into the key hole 221c and rotated in the unlocking direction, the insertion piece 223 enters the notches N1 to N4 as shown in FIG. The door 12 of the safe 100 can be opened by being disengaged from the lock hole 11a.

[Unlocking operation by the unlocking device]
Next, the unlocking operation by the unlocking device 300 of the present embodiment will be described below. In unlocking by the unlocking device 300, while changing the combination of the positions of the notches N1 to N4 in the brute force or the specified range, the key K is rotated in the brute force or the specified range to try inserting the insertion piece 223. By. In the case of brute force, a combination of the positions of the notches N1 to N4 is tried. In the case of the specified range, if some dial numbers are already known, it is assumed that the positions of the cutouts N1 to N4 corresponding to the dial numbers are fixed, and a combination of unknown parts is tried. Become.

(Installation in safe)
First, the operation of mounting the unlocking device 300 on the door 12 of the safe 100 will be described. First, as shown in FIG. 7, the holding portion 311 of the dial driving portion 310 is fitted into the knob portion 212a of the dial 212 and fixed with the screw 311a. Then, the support plate 313a of the fixed portion 313 is aligned with the position of the dial 212, the rotation shaft of the motor 312 is connected to the holding portion 311, and the attachment portion 313d is attached to the door 12 of the safe 100.

  On the other hand, as shown in FIG. 8, the regular key K is inserted into the key hole 221c of the key portion 3, and the head of the key K is fitted into the grip portion 321 of the key driving portion 320. Then, as shown in FIG. 6, the support portion 323 that supports the solenoid 322 is fixed to the support plate 313 a of the dial driving portion 310 via the connecting portion 324.

(Unlocking operation without realignment)
An example of the basic operation of the unlocking device 200 as described above that does not perform realignment will be described with reference to FIG. 10. This unlocking operation is performed by setting the notch N4 of the disc D4, the notch N3 of the disc D3, and the notch N2 of the disc D2 at specific positions and then rotating the disc D1 by one scale. That is, in the case of brute force, each disk D4 covers all combinations of the positions of the cutout N4 of the disk D4, the cutout N3 of the disk D3, and the cutout N2 of the disk D2 from the initial position of FIG. ~ Change the position of D2 one by one. Then, for each combination, a trial is made every time the disk D1 stops, in the process in which the disk D1 makes one revolution by intermittent rotation. Hereinafter, the rotation position corresponding to one scale is referred to as one position. In the course of this trial, the impact that the insert piece 223 hits the peripheral edge of the discs D1 to D4 may cause the discs D2 to D4 to rotate and the notches N2 to N4 may be displaced from the positions where they should be stopped. This will be described later in the explanation of realignment.

  FIG. 10 is an excerpt of a part of this operation. First, it is assumed that the cutouts N4 to N2 of the disks D4 to D2 are at specific positions. FIG. 10A shows a case where the same state as in FIG. 3C is reached by repeating the trial from the initial position. In FIG. 10A, the cutout N4 of the disk D4 and the cutout N3 of the disk D3 happen to coincide with the unlocked position, but this is merely an example, and the case where the cutouts N4 are not aligned is also possible. .

  From the state of FIG. 10A, as shown in FIG. 10B, the rotation instruction section 32 controls the motor 312 to rotate the dial 212 clockwise one position at a time. The trial unit 33 controls the solenoid 322 to perform a trial for each first position. After trials at all positions, the rotation instructing unit 32 controls the motor 311 to rotate the disk D1 one position clockwise. Then, as shown in FIG. 10 (C), the protrusion P1 biases the protrusion Pa2, so that the disc D2 rotates clockwise by one position. As a result, a new combination of the notches N4, N3, N2 of the disks D4, D3, D2 is constructed.

  From the state of FIG. 10C, as shown in FIG. 10D, the rotation instruction section 32 controls the motor 312 to rotate the dial 212 counterclockwise by one position at a time. The trial unit 33 controls the solenoid 322 to make a trial for each position. After trials at all positions, the rotation instructing unit 32 controls the motor 311 to rotate the disk D1 once in the clockwise direction, and then further advances by one position. Then, as shown in FIG. 10 (E), the projection Pa2 is biased by the projection P1, so that the disk D2 rotates clockwise by one position. As a result, a new combination of the notches N4, N3, N2 of the disks D4, D3, D2 is constructed.

  By repeating the above procedure, all combinations of notches N4, N3, N2, N1 are tried, and when the state shown in FIG. 3 (E) is reached, as shown in FIG. 4 (C), insertion is performed. Since the key K rotates until the piece 223 enters the notches N1 to N4, the dead bolt 224 is disengaged from the lock hole 11a and unlocked.

(Unlocking operation for re-arranging)
Next, an unlocking operation for performing realignment in the above-described search process will be described below with reference to the flowchart of FIG. 11 and the explanatory diagrams of FIGS. 12 and 13.

(First mode)
First, the procedure for performing realignment in the first mode will be described with reference to the flowchart of FIG. In this example, the first mode is set to perform realignment every time the disk D1 makes one revolution. First, the operator uses the input unit 39a to specify the start position (step S01). The start position can be, for example, an initial position or a position corresponding to a number already known.

  Next, the rotation instruction unit 32 controls the motor 311 to set the combination of the disks D2, D3, and D4 (step S02). Then, the rotation instructing unit 32 controls the motor 311 to intermittently rotate only the disk D1, and the trial unit 33 controls the solenoid 322 to start trial for each position (step S03). .

  In this process, if the unlocking is successful (YES in step S04), the stopping unit 34 stops the unlocking operation. If the disk D1 has completed one rotation (YES in step S05) without unlocking (NO in step S04), or if all the rotation patterns have not been hit (NO in step S06), the correction unit 36 The dial driver 310 is instructed to realign (step S07). The motor 311 operates so that the disks D1 to D4 once become the initial position and then return to the state immediately before the realignment.

  Then, the rotation instruction section 32 controls the motor 311 to advance the disk D2 by one position and change the combination of the disks D4 to D2 (step S02). After that, when the process from step S03 onward is repeated and unlocking is reached (YES in step S04), the process ends. Also, if all the rotation patterns are hit (YES in step S06), the process is ended.

  A more specific example of realignment in the first mode will be described with reference to FIGS. 12 and 13. As shown in FIGS. 12 (A) and 12 (B), while the notch N2 of the disc D2 is in a specific position, the rotation instruction section 32 controls the motor 311 to rotate the disc D1 in a clockwise direction. , At each position, the trial unit 33 controls the solenoid 322 to perform a trial (see FIGS. 10A and 10B). In the process of this trial, as shown by the dotted arrow in FIG. 12B, the impact of the insertion piece 223 against the peripheral edge of the discs D1 to D4 causes the discs D2 to D4 to rotate and the notches N2 to N4 to stop. There is a deviation from the position where it should be.

  Then, as shown in FIGS. 12C, 12D, and 12E, the correction unit 36 causes the dial driving unit 310 to temporarily set the disks D1 to D4 to the initial state, and then sets the disks D3 and D4 to the same position again. To return to (see FIG. 3 (A) (B) (C)). The operations of such realignment are collectively indicated by R. Further, as shown in FIGS. 13 (A) and 13 (B), while the motor 311 is controlled to rotate the disk D1 in the counterclockwise direction, the trial unit 33 controls the solenoid 322 to perform a trial at each position. Is performed (see FIGS. 10C and 10D). Even at this time, the notches N2 to N4 may be misaligned as in the above case.

  Next, as shown in FIG. 13C (see FIGS. 12C, 12D, and 12E), the correction unit 36 causes the dial drive unit 310 to set the disks D1 to D4 to the initial state once, Again, it is instructed to return the disks D3 and D4 to the same position. That is, the same operation as that shown in FIGS. 12C, 12D, and 12E is performed. Further, as shown in FIG. 13D, the disc D3 is advanced by one position from FIG. 13A, and the motor 311 is controlled to rotate the disc D1 clockwise as shown in FIG. 13E. During one rotation, the trial unit 33 controls the solenoid 322 to perform a trial at each position. Also at this time, the notches N2 to N4 may be displaced.

(Second mode)
Next, a procedure for performing realignment in the second mode will be described with reference to the flowchart of FIG. This procedure is basically the same as the above-mentioned first mode. That is, after the start position is designated (step S11) and the combination is set (step S12), the trial is started (step S13). However, from the start of this trial, the trial unit 33 starts counting the number of trials.

  In this process, if the unlocking is successful (YES in step S14), the stopping unit 34 stops the unlocking operation. If unlocking is not possible (NO in step S14), the count number reaches the preset number of trials (YES in step S15), and if all rotation patterns are not hit (step S16). NO), the correction unit 36 instructs the dial drive unit 310 to perform realignment (step S17). The motor 311 operates so that the disks D1 to D4 once become the initial position and then return to the state immediately before the realignment.

  At this time, the rotation instruction unit 32 controls the motor 311 to rotate the disk D1 to the position next to the tried position and change the combination of the disks D4 to D1 (step S12). After that, when the process from step S13 onward is repeated and unlocking is reached (YES in step S14), the process ends. Also, when all the turning patterns are hit (step S16), the process is ended.

  A more specific example of realignment in the second mode will be described with reference to FIG. As shown in FIGS. 15A and 15B, with the cutout N2 of the disc D2 in a specific position, the rotation instruction section 32 controls the motor 311 to rotate the disc D1 five positions clockwise. During the movement, the trial unit 33 controls the solenoid 322 at each position to perform the trial. Also at this time, the notches N2 to N4 may be displaced.

  Next, after trial of 5 positions, as shown in FIG. 15C, the correction unit 36 causes the dial drive unit 310 to temporarily set the disks D1 to D4 to the initial state, and then the disks D1 and D4 again. An instruction is given to return D2, D3, and D4 to the same position (see FIGS. 3A, 3B, and 3C). Then, as shown in FIG. 15D, the motor 311 rotates the disks D1 in the clockwise direction to return the disks D1 to the state immediately before the realignment.

  Further, as shown in FIGS. 15A and 15B, the rotation instruction section 32 controls the motor 311 with the cutout N2 of the disc D2 at a specific position, so that the disc D1 is rotated clockwise by 5 mm. During the rotation of the position, the trial unit 33 controls the solenoid 322 at each position to perform the trial. In this manner, the alignment is performed every time the set number of 5 positions is tried.

[Effect]
(1) According to the present embodiment as described above, when the positions of the cutouts N1 to N4 of the plurality of disks D1 to D4 rotated by the dial 212 are aligned, the insertion piece 223 is cut out by the rotation of the key K. An unlocking device 300 that unlocks a locking device 200 that is inserted into N1 to N4 and unlocked, including a dial drive unit 310 that rotates a dial 212, a key drive unit 320 that rotates a key K, The key K is turned to the rotation instruction section 32 for instructing the dial drive section 310 to rotate the dial 212 and the key drive section 320 so that the combination of the positions of the notches N1 to N4 of the plurality of disks D1 to D4 changes. A trial unit 33 that moves the insertion piece 223 to try to insert it into the notches N1 to N4, and realigns the positions of the notches N1 to N4 of the disks D1 to D4 during a plurality of trials. Da And a correcting unit 36 that instructs the dial driver 310.

  Thus, even if any of the discs D1 to D4 is rotated and displaced due to the insertion piece 223 colliding with the discs D1 to D4 in the trial, the cutouts N1 to N4 are cut during a plurality of trials. Since the realignment is performed, the notches N1 to N4 can be matched and the possibility of unlocking can be increased. For example, when the cutouts N4 to N2 of the three discs D4 to D2 are aligned, it is possible to maintain the aligned state by rearranging them in the middle of a plurality of trials. When the notch N1 coincides with the other notches N4 to N2, it can be unlocked.

(2) The correction unit 36 instructs realignment every time one of the disks D1 to D4 completes a cycle. If the discs far from the disc D1 which is the drive disc are realigned every time they make one revolution, the number of realignment can be reduced and the search time can be shortened. If the discs close to the disc D1 are realigned every time they make a round, it is possible to increase the number of realignment and increase the possibility of unlocking. That is, in the first mode, the disks to be realigned for each round may be any disks.

(3) One disk D1 of the plurality of disks D1 to D4 is a drive disk that drives the other disks D2 to D4 according to the rotation of the dial 212, and the correction unit 36 makes one rotation of the drive disk. Each time you do, you are instructed to realign. Therefore, with the disk D2 in a specific position, after the disk D4 makes one round and tries, the disks D4 and D3 are realigned before the disk D2 is rotated to the next position. Therefore, the disc D1 will not be displaced more than the number of trials.

(4) The correction unit 36 instructs realignment according to the number of times the trial unit 33 tries. Therefore, the timing of realignment can be set in more detail. For example, if the deviation occurs even during the number of trials for one round of the disk D1, it is possible to increase the possibility of unlocking by setting a number smaller than the number of trials. In particular, when the value is set to 1, all the disks D1 to D4 are realigned every time the trial is performed, so that the occurrence of the deviation can be prevented. However, the smaller the number is set, the longer the unlocking work time is. Therefore, the operator can input and set a desired number of times in consideration of the balance between the unlocking certainty and the work time. That is, the number of times of setting is not limited to the above specific example.

[Other Embodiments]
The present invention is not limited to the above embodiment.
(1) The configuration of the locking device 200 to be unlocked is not limited to the above aspect. For example, in the dial portion 210, the rotation amount of the dial 212 and the rotation amount of the drive disk D1 have a one-to-one relationship, but the rotation amount of the dial may be proportional to the rotation amount of the drive disk. Therefore, a dial lock having a structure in which a gear mechanism is interposed between the dial and the drive disk and the disk rotates once by rotating the dial by a plurality of graduations, which is a part of one rotation, is used. Good. Further, in the above-described embodiment, the dial unit 210 rotates clockwise when starting alignment from the initial position, but may rotate counterclockwise when starting alignment from the initial position. .

(2) For the unit of rotation of the graduation S and the disc D1, in the above embodiment, the entire circumference is divided into 10 and the rotation amount for one graduation is one stop position for the sake of simplification of the description. Shaped However, the scale unit or the amount of rotation for one rotation may be larger or smaller than this. When the scale is finely set, each dial number for aligning the notch position of each disk may have two or more digits. For example, it can be applied to a locking device in which each dial number has two digits, for example, as a scale in which the entire circumference is divided into 100, it is combined with 46-55-85-23.

(3) The number of disks may be plural. Therefore, the number may be two, three, or more than four. The position of the notch and the position of the protrusion provided on each disk may be determined according to the dial number for unlocking, and is not limited to the mode shown in the above embodiment.

100 safe 11 main body 11a lock hole 12 door 121 hinge 200 locking device 210 dial part 211 fixing part 211a fixing plate 211b shaft cylinder 211c locking ring 212 dial 212a knob part 212b display part 213 shaft post 214 drive part 214a fixing tool 215 turning Part 215a Washer 215b Coil spring 220 Key part 221 Cylinder lock 221a Outer cylinder 221b Inner cylinder 221c Key hole 222 Link mechanism 223 Inserting piece 224 Dead bolt 225 Movable plate 225a Long hole 225b Pin 225c Long hole 226 Cam plate 226a Pin 300 Unlocking device 310 Dial Drive part 311 Holding part 311a Screw 312 Motor 313 Fixed part 313a Support plate 313b Arm 313c Leg part 313d Attachment part 320 Key drive part 321 Grip part 322 Solenoid 323 Support part 324 Connection part 330 Control device 31 Storage part 32 Rotation instruction part 33 Trial part 34 Stop part 35 Start processing part 36 Correction part 37 Mode switching part 38 Interface part 39a Input part 39b Output part C Reference lines D1 to D4 Disks N1 to N4 Notches P1, P4 Protrusion Pa2, Pb2 Protrusion Pa3, Pb3 Protrusion S Scale

Claims (6)

An unlocking device for unlocking a locking device, wherein when the positions of the cutouts of a plurality of discs rotated by a dial match, the insertion piece is inserted into the cutouts and unlocked by the rotation of the key,
A dial driving unit for rotating the dial,
A key driving unit for rotating the key,
A rotation instructing section for instructing the dial driving section to rotate the dial so that the combination of the positions of the notches of the plurality of disks changes.
A trial unit that causes the key drive unit to rotate the key to try whether the insertion piece can be inserted into the notch;
A correction unit for instructing the dial drive unit to realign the positions of the cutouts of the disc during a plurality of trials;
An unlocking device comprising:   The unlocking device according to claim 1, wherein the correction unit instructs the realignment every time one of the disks makes a round. One of the plurality of disks is a drive disk that drives another disk in accordance with the rotation of the dial,
The unlocking device according to claim 1, wherein the correction unit instructs the realignment every time the drive disk makes one revolution.   The unlocking device according to claim 1, wherein the correction unit instructs the realignment according to the number of times the trial unit tries. A unlocking method for unlocking a locking device, wherein when the positions of the notches of a plurality of discs rotated by a dial match, the insertion piece is inserted into the notches and unlocked by the rotation of the key.
A dial driving unit for rotating the dial,
A key driving unit for rotating the key,
A computer or electronic circuit connected to
A rotation instruction process for instructing the dial drive unit to rotate the dial so that the combination of the positions of the notches of the plurality of disks changes.
A trial process of rotating the key to the key drive unit to try whether the insertion piece can be inserted into the notch;
During a plurality of trial processes, a correction process for instructing the dial driving unit to realign the positions of the notches of the disc,
An unlocking method, characterized by executing. It is an unlocking program for unlocking a locking device, which causes a computer to unlock a locking device in which an insert piece is inserted into a notch when a key is rotated when the positions of the notches of a plurality of discs rotated by a dial match. ,
A dial driving unit for rotating the dial,
A key driving unit for rotating the key,
To the computer connected to
A rotation instruction process for instructing the dial drive unit to rotate the dial so that the combination of the positions of the notches of the plurality of disks changes.
A trial process of rotating the key to the key drive unit to try whether the insertion piece can be inserted into the notch;
During a plurality of trial processes, a correction process for instructing the dial driving unit to realign the positions of the notches of the disc,
An unlocking program that is characterized by executing.

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