JP6756811B2 - Highly secure lock - Google Patents

Description

Mutual Reference to Related Applications The invention is a US application filed on September 4, 2009, claiming the interests of US Provisional Application No. 61 / 094,730 (expired) filed on September 5, 2008. One of U.S. Patent Application Publication Nos. 13 / 331,222 (pending) filed on December 20, 2011, which is a continuation of 12 / 554,372 (current U.S. Pat. No. 8,091,392). It is a partial continuation application, the entire disclosure of which is incorporated herein by reference.

The present invention relates generally to locks, and more specifically to highly secure locks configured for use in safes and other security structures or areas.

In many cases, documents with characteristics that should be handled with care and items of very high property value should be stored in safes and other structures. The structure typically comprises a locking mechanism, and the structure is basically designed to be accessible only by a small number of selected parties, to whom the locking mechanism is locked. A default combination code is given to help unlock. An unauthorized person uses a simple lock picking tool or a sophisticated device that can apply high mechanical stress or electric or magnetic field to the lock mechanism to manipulate the components inside the lock mechanism.

As the tools used to pick locks become more sophisticated, the locking mechanism must also be improved to withstand such advanced lock picking methods. Mechanical and / or electrical elements have been used in locks to provide a complex barrier to potentially unauthorized persons attempting to break into structures. However, unauthorized persons continue to drill and attack into the interior of the locking mechanism through the opening of the locking casing, even with these improved locking mechanisms. Frequently attacked parts of the lock casing include mounting bolts and spindle mounts where the spindle shaft from the combination dial enters the lock casing.

In addition, unauthorized persons attempting to break into the structure are known to use devices to apply high acceleration to the combination dial to overcome the security elements of the locking mechanism. The high acceleration of the gear train can sometimes force the gear that controls the lock bolt to rotate and unlock without entering the proper combination. Such a high acceleration device may include a so-called automatic dialing device that quickly attempts all possible combinations until the appropriate combination is identified. Even if an unauthorized person does not succeed in releasing the locking mechanism in the above manner, the rapid collision of gear teeth in the geartrain caused by high acceleration often damages the geartrain and causes the locking mechanism to fail. May cause proper operation. Gear tooth collisions may also provide audible information that can be sensed and used by an unauthorized person to identify the programmed combination that initiates the unlocking of the mechanism.

In addition, the improved locking mechanism must comply with very stringent government specifications for use in government controlled structures or containment devices. For example, the rigor of the relevant US Government specification is easily understood from the Federal Specification FF-L-2740 "FEDERAL SPECIFICATION: LOCKS, COMBINATION" dated October 12, 1989 for all federal agencies. In Section 3.4.7 "Combination Redial", when a lockbolt is extended to that lock position, "the locked combination must not be able to be re-released without being dialed completely again". Required. Section 3.6.1.3, “Emanation Analysis” requires that the lock must not emit any sound or other signal that could be used to secretly release the lock within a specified time period. In addition, US Government requirements include "FEDERAL SPECIFICATION: COMBINATION LOCK, MECHANICAL" in Federal Specification FF-L-2937 dated 31 January 2005. In this document, section 4.7.4, "Endurance Test", the sample lock is "50 times, including 3 open / close tests, after each change" to ensure the proper combination to set functionality. It is required to be repeated after changing the combination. Section 4.7.7 “Resistance to Unauthorized Opening Test” requires that the lock cannot be released by mechanical operation or automatic dial input with a computer-assisted device for at least 20 hours.

Therefore, it is desired to improve the highly secure locks to deal with the frequently attacked areas of the locking mechanism while fully adhering to typical government specifications.

In one embodiment, the locking mechanism includes a locking bolt that moves between an extended position and a retracted position. The lock bolt is connected to a bolt retreat gear that is movable between the engaging and disengaging positions. In the engaging position, the bolt retracted gear is engaged with the manually-driven gear. The locking mechanism further includes a user input device for receiving user input information and a controller for collating the stored authentication information with the user input information. When valid user input information is detected, the controller initiates an actuator assembly with a guide element that can operate between the capture and release positions. In the capture position, the guide element prevents the bolt retreat gear from moving. In the disengagement position, the guide element allows the bolt retreat gear to move. The guide element prevents the bolt retreat gear from moving towards the engagement position until the controller confirms that the user input information matches the stored credentials.

In one aspect, the guide element engages the bolt retreat gear during movement from the disengagement position to the capture position in order to orient the bolt retreat gear towards the disengagement position. The actuator assembly further includes a cam that is movable between a first position and a second position, an actuator, and a clutch mechanism. The actuator engages the cam via the clutch mechanism. The cam is positioned close to the guide element in the first position and engages the guide element in the second position. Therefore, the cam engages the guide element to move the guide element between the capture position and the capture release position.

According to another embodiment, the locking mechanism includes a locking bolt that moves between an extended position and a retracted position. The lock bolt is connected to a bolt retreat gear that is movable between the engaging and disengaging positions. In the engagement position, the bolt retract gear is engaged with the manual gear. The locking mechanism further includes a locking dial for receiving user input information and a sensor configured to detect the rotation of the locking dial. The display is configured to visualize the user input information and the controller is configured to match the user input information with the stored authentication information. The controller is operably connected to the sensor and display to convert the rotation of the lock dial into user input information visualized on the display via a predetermined algorithm. When it is confirmed that the user input information is the stored authentication information, the bolt retreat gear moves from the disengagement position to the engagement position together with the manual gear.

In one aspect, the user input information visualized on the display is basically randomly selected from the rotation position of the lock dial, that is, at random. In addition, the algorithm converts the turnover rate of the lock dial into user input information selected by the user.

A further embodiment of the locking mechanism comprises a locking casing having an internal component of the locking therein. The lock casing is made of at least partially translucent material. In this regard, the internal components of the lock can be seen from outside the casing so that evidence of unauthorized interference with the lock is visible. Additionally, the lock casing further includes an opaque first portion and a substantially translucent second portion. The first and second parts of the lock casing are permanently sealed together so that at least a portion of the lock casing is damaged by splitting the first and second parts.

In use, the method of activating the lock comprises capturing the bolt retracted gear with a guide element in the capture position to prevent the bolt retracted gear from moving towards engagement with the manual gear. The method further includes a step of recording the user input information from the user input device and a step of verifying that the user input information matches the authentication information stored in the controller. The method further comprises rotating the cam of the actuator assembly to engage the guide element and move the guide element to the release position. In addition, the method includes disengaging the guide element from the bolt retracted gear to allow engagement of the bolt retracted gear with the manual gear after the user input information has been verified. The method further includes the step of driving the lockbolt to the retracted position by manually driving the gear with the bolt retracted gear.

In one aspect of the use of the lock, the method comprises actuating the actuator over a predetermined period of time to rotate the clutch mechanism over a predetermined period of time, and engaging the clutch mechanism with a cam. The method further comprises the step of abruptly stopping the operation of the cam while the actuator continues to rotate the clutch mechanism operably.

Various additional objectives, advantages and features of the present invention will become apparent by reading the following detailed description of exemplary embodiments associated with the accompanying drawings.

The accompanying drawings are incorporated into and part of this description, exemplifying embodiments of the invention with a schematic description of the invention described above and a detailed description of the embodiments below. It is useful for explaining the principle of.

It is a perspective view of the lock with high safety configured based on one Embodiment of this invention. It is an exploded perspective view of the lock illustrated in FIG. It is an exploded perspective view from the rear of the lock. It is a perspective sectional view of the lock cut out along the central axis in the longitudinal direction. It is an exploded perspective view of the lock casing and the bolt retreat hardware. It is a partially disassembled perspective view illustrating various bolt retracting hardware. It is a perspective view of a bolt retract assembly. It is a partially cutout front view showing bolt retracted hardware with bolts in the extended or locked position. FIG. 8A is a front view similar to FIG. 8A showing the initial portion of the bolt retreat sequence. FIG. 8B is a front view similar to FIG. 8B, showing the bolt retracted hardware associated with the fully retracted position of the bolt. It is sectional drawing which was cut out along the line 9A-9A of FIG. 8A. It is sectional drawing which is cut out along the line 9B-9B of FIG. 8B. It is sectional drawing which is cut out along the line 9C-9C of FIG. 8C. FIG. 5 is a rear perspective view of the lock of FIG. 1 with a partially disassembled lock casing to show a circuit break coil. It is an exploded perspective view of the alternative embodiment of a lock casing and a bolt retreat hardware. It is an exploded view of the bolt retracting hardware and the retracting mounting screw shield of FIG. FIG. 11 is a perspective view of the bolt retracting hardware and the retracting mounting screw shield of FIG. It is a front view which shows the retracting mounting screw shield of FIG. 11 at the lock position of a bolt retracting hardware. FIG. 14A is a front view similar to FIG. 14A, illustrating the initial portion of the bolt retreat sequence. FIG. 4A is a front view similar to FIG. 14A, showing the fully retracted position of the bolt and the associated rotation of the retracted mounting screw shield. FIG. 6 is a partially cutout front view of another alternative embodiment of the lock showing bolt retracted hardware with the bolt in the extended or retracted position. FIG. 15A is a front view similar to FIG. 15A showing the initial portion of the bolt retreat sequence. FIG. 15A is a front view similar to FIG. 15A, showing the fully retracted position of the bolt and the associated bolt retracted hardware. FIG. 6 is a partially cutout front view of an alternative embodiment of a lock showing bolt retracted hardware with the bolt in an extended or retracted position. FIG. 16A is a front view similar to FIG. 16A showing the initial portion of the bolt retreat sequence. FIG. 16A is a front view similar to FIG. 16A, showing the bolt retracted hardware associated with the fully retracted position of the bolt. FIG. 16A is a partially cutout inverted front view of the lock of FIG. 16A showing bolt retracted hardware with bolts in the extended or retracted position. FIG. 16A is an inverted front view similar to FIG. 16A showing the initial portion of the bolt retreat sequence. FIG. 16A is an inverted front view similar to FIG. 16A, showing the bolt retracted hardware associated with the fully retracted position of the bolt. FIG. 3 is a rear perspective view of another alternative embodiment of the lock, illustrating the visible damage from unauthorized unauthorized interference, including a lock case. FIG. 3 is a perspective view of a highly secure lock based on yet another alternative embodiment of the present invention. It is an exploded perspective view of the lock casing and the bolt retreat hardware. It is an exploded perspective view of a part of a lock casing and bolt retreat hardware. It is a partially disassembled perspective view of a bolt retreat assembly. It is a partially cutout front view showing the bolt retracting hardware in which the bolt is in the extended or locked position. FIG. 8A is a front view similar to FIG. 8A showing the initial portion of the bolt retreat sequence. FIG. 8B is a front view similar to FIG. 8B, illustrating bolt retract hardware associated with a fully retracted position of the bolt. It is sectional drawing which is cut out along the line 23A-23A of FIG. 22A. It is sectional drawing which is cut out along the line 23B-23B of FIG. 22C. It is an enlarged view which shows a part of FIG. 23A. It is an enlarged cross-sectional view which was cut out approximately along the line 24B-24b of FIG. 22B. It is an enlarged view which shows a part of FIG. 23B. FIG. 6 is a cross-sectional view cut along line 25A-25A of FIG. 22 showing a thermal relocking device in the operating position. FIG. 5 is a cross-sectional view similar to FIG. 25A showing a thermal relocking device in an illicit interference position. It is a figure which shows the flowchart which shows the control logic of the operation mode for one Embodiment of a lock. It is a figure which shows the flowchart which shows the control logic of the operation mode for one Embodiment of a lock. It is a figure which shows the flowchart which shows the control logic of the configuration mode for one Embodiment of a lock.

FIG. 1 shows, for example, an embodiment of a highly secure lock 10 connected to a door 12 of a structure. The lock 10 includes a lock casing 14 and a user input device 15. The user input device 15 of this embodiment of the lock 10 is a mechanical lock dial 24 disposed within the dial housing 16. The dust cover 18 may be connected to the dial housing 16 in a removable manner using a suitable snap fitting connector 20 and may have, for example, an opening 22 through which the lock dial 24 passes through the opening 22. It is postponed. The dial 24 may be rotated to enter a numeric combination, and the numeral of the combination can be seen through the window 26 in the dial housing 16 by reflection at the mirror 28 as described below.

FIG. 2 is an exploded view of the user input device 15 and its contents. The dial 24 includes a protruding portion 30 that can be manually gripped by the user, and a plate portion 32 (see FIG. 3) that includes a number 34 for a number combination on its back surface. The brass insert 36 is firmly fixed to the dial 24 using the screw fixture 38. The brass insert 36 can provide a weight for the dial 24 and functions as a bearing member for rotation with respect to the portion 40 of the dial housing 16. The dial housing 16 includes windows 42, 44 to make the numbers on the back of the dial plate portion 40 visible through reflections on the mirror 28. The LED indicator light 46 is provided and may be used in various modes to provide instructions for combination input. A battery 48, such as a standard 9 volt battery, may be detachably placed in the dial housing 16 via the battery door 50. The battery 48 provides power for the electrical circuits and servomotors described below. The rotary spindle shaft 52 is provided to transmit the rotation of the dial 24 to the bolt retracting hardware when the correct combination code is entered.

FIG. 3 is a perspective view from the rear side of the lock 10 and shows a lock bolt 54 extending from the lock casing 14. The shaft 52 extends through the back surface 56 of the lock casing 14 and is fixed with nuts 58 in such a manner that the shaft 52 can rotate when the dial 24 is rotated. As further shown in FIG. 3, the back surface of the dial plate portion 32 includes a combination number that becomes visible to the user when reflected by the mirror 28 (FIG. 2).

FIG. 4 is a longitudinal perspective sectional view of the lock 10 and includes the various components described above. In particular, the spindle shaft 52 is shown so as to completely penetrate and extend the dial housing 16 and the lock casing 14. One or more spindle sleeves 60 receive the spindle shaft 52 along its length. Such sleeves 60 help prevent unwanted entry into the lock casing 14 and prevent access to various bolt retracting hardware when the shaft 52 is removed.

With reference to FIG. 5, the lock casing 14 is shown in disassembled form to show the circuit board 62 and various lockbolt retreat hardware, the lockbolt retreat hardware with the bolt guide member 64 and the bolt 54. Includes a bolt retraction gear 68, an actuator 70, a pivot block 72, and a cover 74 for fixing to the pivot block 72 and covering the rotational output element 76 of the actuator 70. The lock casing 14 includes a front casing half body 14a and a rear casing half body 14b. The circuit board 62 is arranged inside the front casing half body 14a. Therefore, when the drill is used to drill a hole in the lock casing 14 from the outside of the door 12, the tip of the drill is expected to first contact the circuit board 62 to invalidate the lock 10, making entry more difficult. It becomes. The spindle gear 78 is coupled to rotate with the spindle shaft 52 and the connected dial 24 (FIG. 4). The spindle gear 78 meshes with the first gear portion 80a of the drive gear element 80. On the opposite side of the drive gear element 80, that is, the second gear portion 80b, the second gear portion 80b engages with the bolt reverse gear 68 when the correct combination code is input as shown in FIGS. 6 and 7. It extends through the opening 82 in the rear casing half body 14b so that it can fit. The encoder 84 is used to detect the input of the combination code via the rotation of the shaft 52 and is used in conjunction with the control circuit of the appropriate controller on the circuit board 62.

The bolt retreat sequence will be described with reference to FIGS. 6 and 7 in connection with FIGS. 8A-8C and 9A-9C. When the correct combination code is entered as recognized by the encoder and control circuit, the actuator 70 is actuated to rotate its output element 76. The output element 76 includes a pin 76a, which rotates through a slot 86 in the pivot block 72 (FIG. 5) and further moves through a slot 68c in the bolt retreat gear 68. Normally, the pin 76a blocks the rotation of the bolt retreat gear 68, for example as shown in FIG. 8A. However, when the output element 76 of the actuator 70 is rotated as shown in FIGS. 8A-8C to move the pin 76a downward, the bolt retreat gear 68 is such that the bolt retreat gear 68 is the second drive gear element 80. It can be moved or rotated clockwise as illustrated in FIGS. 8A-8C so that it can engage with portion 80b. Although not shown, the bolt retreat gear 68 uses, for example, a low spring force torsion spring so that the bolt retreat gear 68 is urged clockwise toward the position shown in FIG. 8B when the actuator 70 is activated. A slight spring load may be applied. When the gear 68 and the gear 80b are engaged as illustrated in FIG. 8B, the dial 24 rotates the drive gear element 80 via the engagement of the first drive gear portion 80b with the spindle gear 78. As it is rotated by hand. As illustrated in FIGS. 8A-8C, the spindle gear 78 is connected to the shaft 52 by a key 88. When the bolt retreat gear 68 is engaged with the drive gear portion 80b as shown in FIG. 8B, the bolt retreat gear 68 rotates about its pivot shaft 68a and is a pin 68b fixed to the bolt retreat gear 68. Raises from a position accommodated in the recess 64a of the bolt guide member 64 and the curved slot of the bolt guide member 64 (FIG. 5) or the end 90a of the pin guide 90. The pin 68b further extends through the slot 54a in the bolt 54, and as the bolt retreat gear 68 rotates, the pin 68b rises upward in the slot 54a as illustrated in FIGS. 8b and 8C, and at the same time. The bolt 54 is moved into the lock casing 14 via the bolt guide member 64. By rotating the dial 24, the shaft 52, and the gears 78, 80, 68 in opposite directions, the bolt 54 extends back to its fully extended position, and the bolt retreat gear 68 is illustrated by pins 76a in FIG. 8A. Return to the initial position. In this regard, the output element 76 is spring loaded with the spring 92 so that the spring 92 returns the pin 76a to the initial position shown in FIG. 9A when the actuator 70 is deactivated. The spring force of the output element 76 is strong enough to push the bolt retreat gear 68 toward the initial position shown in FIG. 8A.

By using the dial plate portion 32 and the mirror 28, the battery 48 can be arranged in the dial housing 16 in a space-efficient manner. The lock casing portions 14a and 14b are mechanically fixed to each other, and when the lock casing portions 14a and 14b are pried open, the mechanical elements (not shown) for fixing the lock casing 14 to each other are damaged. As a matter of course, the bolt 94 extending through the lock casing 14 does not fix both the lock casing portions 14a and 14b, but merely functions to fix the lock casing 14 to the door 12, for example. Other methods of unauthorized entry into the lock include the use of an external hammer to exert a force on the spindle shaft 52 through the lock 10. Note that with existing locks, this does not move the casing 14, thus eliminating the need for the "relock" feature used in other more secure locks. The actuator 70 is a servomotor 70 in the illustrated embodiment. For example, there is an advantage in using a servo motor 70 such as a micro servo which is opposite to a step motor. For example, the servomotor 70 includes a relatively complex geartrain with some revolutions to rotate the output element 76 with only partial rotation as described above. Therefore, the servomotor 70 is difficult to operate in some fraudulent fashion. The pin 68b used in the bolt retreat gear 68 is clamped in a recess in the home position where the lock bolt 54 extends as shown in FIG. 8A. Therefore, if an unauthorized attempt is made to gain unauthorized access to the lock 10 and the lock bolt 54 is forcibly pushed inward, the force will not act on the gear train, but rather a bolt designed and configured to withstand a large force. It acts on the guide member 64.

Referring to FIG. 10, the lock 10 further comprises a circuit break device 96. The circuit breaking device 96 of the illustrated embodiment consists of a continuous conductive wire having a first end 96a and a second end 96b. The ends 96a and 96b are electrically connected to the circuit board 62. The circuit break device 96 is integrally connected to the main control circuit of the lock 10, and if the circuit break device 96 is damaged, the lock 10 becomes inoperable. As illustrated in FIG. 10, the circuit break device 96 is placed close to the spindle sleeve 60 that holds the spindle shaft 52 when the shaft 52 enters the lock casing 14. An unauthorized person attempting to disable the lock 10 would remove the user input device 15 and subsequently attempt to puncture the spindle sleeve 60 at the front opening of the lock casing 14. However, attempts at unauthorized entry into the lock casing 14 through the spindle sleeve 60 will damage the circuit break device 96, thereby hampering this method of attacking the lock 10. The circuit break device 96 is illustrated in FIG. 10 as a coil covering the spindle sleeve 60. Those skilled in the art will recognize that the circuit break device 96 may include multiple wires.

With reference to FIGS. 11-14C, another embodiment of the lock 110 is illustrated. As most clearly illustrated in the exploded view of the lock casing 14 and the inner lock hardware of FIG. 11, the lock 110 is the first embodiment of the lock 10 such as the circuit board 62, the bolt retract gear 68 and the actuator 70. Contains many of the same elements. In this application, the same elements are given the same reference numerals in the various embodiments disclosed. This embodiment of the lock 110 follows the same bolt retreat sequence as illustrated in FIGS. 6-9C above, but the lock 110 includes a different lock bolt 112 and a retreat bolt shield 114. The lock bolt 112 includes a slot 112a configured to receive the pin 68b of the bolt retreat gear 68. The lock bolt 112 further includes a pair of opposing recesses 112b used in the retracting bolt shield 114 and a bolt extension 112c, as detailed below. The bolt extension portion 112c is connected to the lock bolt 112 by using a screw fixing tool 116 which is arranged on the same plane as the outer surface of the bolt extension portion 112c when the bolt extension portion 112c is arranged on the lock bolt 112. .. In the embodiment of FIG. 11, the bolt extension 112c has a thickness of about 1/10 (0.100) to 3/16 (0.1875) of an inch. Various government contractors manufacture locks for the United States, and one of the leading lock makers is designing lock bolts that are in the same plane as the lock casing when retreating, while another. Major lock makers design lock bolts that extend approximately three-sixteenths (0.1875) of the lock casing when reversing. The bolt extension 112c can be added to the lock bolt 112 if desired for the selected door 12. Therefore, the lock bolt 112 can be configured to be used for any type of door.

As shown in the embodiments described above, the mounting bolts 94 of the lock casing 14 are accessible from the back surface 56 of the lock casing 14. When accessing such a back surface 56, an unauthorized person may remove the mounting screw 94, replace the lock casing 14 with a lock body of a different mechanism, and gain unauthorized access to the lock 110. To address these issues, the lock 110 of this embodiment includes a retracting bolt shield 114. As illustrated in FIGS. 11 and 12, the lock 110 includes a modified bolt guide member 118. The bolt guide member 118 continues to include a recess 118a and a curved slot 120 to engage the pin 68b of the bolt retreat gear 68. The bolt guide member 118 further has a pair of longitudinally oriented openings 118b formed on both sides of the bolt guide member 118. These longitudinally oriented openings 118b communicate with the laterally oriented slots 118c. The slot 118c extends from the edge of the bolt guide member 118 to the longitudinal receiving portion 122 that holds the mounting bolt 94. The retreat bolt shield 114 enables the block member 124 having the non-circular opening 124a, the first member 126 having the non-circular opening 126a, and the block member 124 to operate the first member 126 in the non-circular openings 124a, 126a. Includes a non-circular drive rod 128 to be connected. The drive rod 128 is positioned in one of the longitudinally oriented openings 118b of the bolt guide member 118, while the block member 124 is located in the side slot 118c as most clearly illustrated in FIG. At least partially placed in one of them. The drive rod 128 and associated openings 124a, 126a are hexagonal in the illustrated embodiment, but alternative non-circular shapes may be selected for these elements as will be apparent to those skilled in the art. The first member 126 has a first end 126b configured to engage one of the recesses 112b in the lock bolt so as to engage the lock bolt 112.

The operation of the retracting bolt shield 114 is illustrated in a series of drawings in FIGS. 14A-14C. In FIG. 14A, the bolt retreat gear 68 is exactly engaged with the gear trains 78, 80 to initiate the retreat process of the lock bolt 112. When the lock bolt 112 is in the extension position, the block member 124 completely hides the mounting bolt 94 on the bolt side of the lock 110. In FIG. 14B, the bolt retreat gear 68 is moved to partially retract the lock bolt 112. In this operating state, the block member 124 continues to hide the mounting bolt 94 because the first end 126b of the first member is moved into the recess 112b of the lock bolt but is not rotated. As the bolt retreat gear 68 continues to retract the lock bolt 112, the recess 112b forces the first member 126 to rotate to the position shown in FIG. 14C. When the lock bolt 112 is completely retracted to such a position, the drive rod 128 transmits the movement of the first member 126 to the block member 124, exposing the mounting bolt 94. When the spindle gear 78 drives the bolt retreat gear 68 and the lock bolt 112 to return to the extension position or the lock position, the first member 126 engages the lock bolt 112b again and rotates to return to the position in FIG. 14A. To do. Therefore, the retreat bolt shield 114 prevents an unauthorized person from attempting to gain unauthorized access to the lock 110 by removing the mounting bolt 94.

In a similar embodiment (not shown), the retracting bolt shield 114 may include a second pair of block members connected to rotate with the bolt side block member 124 via a simple link mechanism. In such an embodiment, the bolt-side block member 124 hides the mounting bolt 94 on one side of the lock 110 when the lock bolt 112 is extended, and a second pair of blocks when the lock bolt is retracted. A member may hide the mounting bolt 94 on the opposite side of the lock 110. Therefore, an unauthorized person must use a combination to activate the lock 110 in order to access all four mounting bolts.

Referring to FIGS. 15A-15C, additional embodiments of the lock 210 are illustrated. The lock 210 operates in a bolt retreat sequence substantially similar to the bolt retreat sequence described above shown in FIGS. 8A-9C, with some differences. The lock 210 includes a spindle gear 212, a drive gear 214 having a first drive gear portion 214a and a second drive gear portion 214b configured to engage the spindle gear 212, and a second drive gear portion 214b. Includes a bolt retreat gear 216 configured to engage with. Similar to the embodiments described above, the bolt retreat gear 216 includes a pivot shaft 216a and a pin 216b that operate supported by the corresponding slots 54a, 90 of the lock bolt 54 and the bolt guide member 64. Similar to the embodiment described above, when the lock bolt 54 is fully extended as shown in FIG. 15A, the bolt retreat gear 216 remains engaged with the second drive gear portion 214b. A two-tooth relief (two-tooth relief) 218 is provided on the spindle gear 212 and a corresponding two-tooth relief 220 is provided on the first drive gear portion 214a. The relief 220 in the first drive gear portion 214a is oriented as shown in FIG. 15A so that the spindle gear 212 and the drive gear 214 engage while the spindle gear 212 is rotated during the input of the combination. Prevent it from happening. Therefore, audible information due to gear interference is not provided to a person who is not authorized to rotate the dial 24.

When the correct combination is input, the actuator 70 does not immediately rotate the output pin 76a from the path of the bolt retreat gear 216. Instead, the controller waits for the spindle gear 212 to rotate to the position shown in FIG. 15B. At this time, the relief 218 in the spindle gear 212 is positioned so as to face the drive gear 214. In this position, the controller signals the actuator 70 to rotate the output element 76 and the pin 76a from the path of the bolt as already illustrated in FIGS. 9A-9C. The bolt retreat gear 216 is subsequently rotated slightly downward as shown in FIG. 15b, thereby rotating the drive gear 214 and towards a position for engaging with the spindle gear 212, the first drive gear portion 214a. Move your teeth. As the spindle gear 212 continues to rotate with the dial 24, the first drive gear portion 214a is driven to the position shown in FIG. 15C, which is further rearward of the bolt retract gear 216 via the second drive gear portion 214b. It leads to rotation. In addition, the pin 216b forces the lock bolt 54 to retract to the position illustrated in FIG. 15C, thereby completing the bolt retract sequence of the lock 210.

Additional embodiments of the lock 310 are illustrated in FIGS. 16A-17C. The lock 310 is similar to the lock 210 of the embodiment described above and has a spindle gear 312 and a drive having a first drive gear portion 314a and a second gear portion 314b configured to engage the spindle gear 312. It includes a gear 314 and a bolt retreat gear 316 configured to engage the second drive gear portion 314b. The spindle gear 312 and the first drive gear portion 314a are further provided with the corresponding two-tooth reliefs 318, 320 in the same manner as described above in connection with the lock 210. In the embodiment of the lock 310, the actuator 70 and the associated output element 76 are removed. The second drive gear portion 314b prevents the bolt retreat gear 316 from engaging with the second drive gear portion 314a when the lock bolt 54 is fully extended as shown in FIGS. 16A and 17A. Includes a two-tooth relief 322 configured to do so. The bolt retreat gear 316 is initially positioned in the same position as in the embodiment described above, with the gear teeth facing the second drive gear portion 314b for engagement.

When the lock bolt 54 is fully extended, the drive gear 314 is disengaged from both the spindle gear 312 and the bolt retreat gear 316 in the direction of the reliefs 320 and 322 at the drive gear portions 314a and 314b on both sides. Is set. The drive gear 314 of this embodiment is mounted on the input shaft 324, and the actuator 326 is operably coupled to the drive gear 314 at the opposite end of the shaft 324. The actuator 326 is arranged close to the circuit board 62 and is configured to rotate the shaft 324 and the drive gear 314. The actuator 326 is a low-power drive device such as a geared servomotor, a non-geared servomotor, or an air-core rotary solenoid. When the appropriate combination is input to the lock 310, the circuit board 62 has the dial 24 so that the relief 318 in the spindle gear 312 faces the first drive gear portion 314a as illustrated in FIGS. 16B and 17B. Wait until it is rotated. The circuit board 62 then sends a signal to the actuator 326 to engage the shaft 324 and drive gear 314 so that both the spindle gear 312 and the bolt retreat gear 316 are simultaneously engaged as shown in FIGS. 16B and 17B. Rotate. As the user continues to rotate the dial 24, the spindle gear 312 drives the drive gear 314 and the bolt retreat gear 316 to the positions shown in FIGS. 16C and 17C. Here, the lock bolt 54 is completely retracted. This embodiment of the lock 310 further eliminates all audible noise due to gear engagement and interference during the combination input, and the actuator 326 is as small as 10% of the operating energy of the servomotor 70 of the embodiment described above. Requires only working energy. As such, this embodiment of the lock 310 further interferes with unauthorized input through the door.

With reference to FIG. 18, an alternative embodiment of the lock 410 is illustrated. The lock 410 includes a lock casing 414 made of a substantially translucent material so that the internal components of the lock 410 are visible from the outside of the lock casing 414. If an unauthorized input is made to the lock 414 or an attempt is made to destroy the lock 410, the translucent lock casing 414 clearly shows evidence of the attempted intrusion as illustrated in FIG. A drill hole 412 through the casing 414 can be seen near the lock bolt 54. Unlike the opaque lock casing, the drill holes 412 in the translucent lock casing 414 are repaired or repaired with a material that conceals attempted intrusions undetected by the person inspecting the back 56 of the lock casing 414. It cannot be closed. Further inspection of the lock 410 through the translucent lock casing 414 reveals any unauthorized interference or problem with any of the components of the lock 410. As will be apparent to those skilled in the art, the translucent casing 414 of this embodiment can be used with the embodiments described above to further prevent unauthorized interference with the lock.

In FIGS. 19A and 19B, a further alternative to the lock 510 shows the circuit board 514 and the lock casing 512 disassembled to illustrate various lockbolt retreat hardware. The lockbolt retract hardware includes a bolt guide member 516, a lockbolt 518, a bolt retractor gear 520, an actuator assembly 522, and an urging device 524. The lock casing 512 includes a front casing half body 512a and a rear casing half body 512b. The front and rear casing halves 512a, 512b are mechanically fixed to each other as described above using mechanical elements (not shown). In addition, the front and rear casing halves 512a, 512b are further permanently sealed to each other with an adhesive during the manufacture of the lock 510. Therefore, attempts to separate the front and rear casing halves 512a, 512b will at least partially damage the lock casing 512, indicating unauthorized unauthorized entry into the lock 510.

The circuit board 514 is arranged on the front inner surface of the front casing half body 512a. Therefore, when a drill is used to make a hole in the lock casing 512, it is expected that the tip of the drill first comes into contact with the circuit board 514 to make the lock 510 inoperable, which makes intrusion more difficult. The spindle gear 78 is coupled to rotate with the spindle shaft 52 and the connected lock dial 24. Therefore, a similar reference code associated with lock 510 points to the same features described above. The spindle gear 78 meshes with the first gear portion 80a of the drive gear element 80. The opposite end of the drive gear element 80, i.e., the second gear portion 80b, allows the second gear portion 80b to engage the bolt retract gear 520 as illustrated in FIGS. 20 and 21 when the correct combination code is entered. Extends through the opening 82 in the rear casing half body 512b.

The lock 510 further includes a sensor 526 configured to detect the rotation of the lock dial 24. More specifically, the sensor 526 includes an encoder 528 and a rotary sensor 530. The encoder 528 is attached directly to the drive gear element 80, which is manually and mechanically driven by the lock dial 24. The rotary sensor 530 is electrically connected to a suitable control circuit on the circuit board 514. The rotary sensor 530 is positioned adjacent to the encoder 528, which is a magnet. Since the rotary sensor 530 is arranged sufficiently close to the encoder 528 to detect the magnetic field of the magnet, the rotary sensor 530 detects the rotation of the drive gear element 80. In contrast, the position of the drive gear element 80 may be directly or indirectly associated with the position of the lock dial 24. An exemplary embodiment of circuit board 514 operates a predetermined algorithm based on the rotation of the drive gear element 80 to convert the rotation of the lock dial 24 into user input information. Further, the display 532 visualizes the user input information converted from the rotation of the lock dial 24 via the algorithm. The display 532 is an LED display that is placed in a recess within the lock 510 to limit the viewing angle of the visualized user input information. The display 532 further includes a filtering device 534 that covers at least a portion of the display 532 to further interfere with the visibility of user input information from multiple viewing angles.

According to an exemplary embodiment, the algorithm converts the rate of rotation of the lock dial 24 into user input information visualized on the display 532. Therefore, the user input information is distinct or random from the rotational position of the lock dial 24 for further blocking of unauthorized access to the lock 510. Unsurprisingly, while an exemplary embodiment of the algorithm converts the rate of rotation of the lock dial 24 into user input information, other properties of the operation of the lock dial 24 may be used alone or in combination for use in the algorithm. May be used. For example, such characteristics may include, but are not limited to, the position, direction, speed, acceleration and / or rotation time of the lock dial 24.

The bolt retreat sequence will be described with reference to FIGS. 20 and 21 associated with FIGS. 22A-22C and 23A-24C. When the correct combination code visualized on the display 532 to be authenticated by the control circuit is entered, the actuator assembly 522 is activated and the movement of the bolt retract gear 520 urged towards the drive gear element 80 is It will be possible. Actuator assembly 522 includes guide element 536. The guide element 536 can operate between the capture position and the capture release position. In the capture position, the guide element 536 prevents the bolt retreat gear 520 from moving, and in the capture release position, the guide element 536 allows the bolt retreat gear 520 to move. In addition, the rear casing half body 512b also includes a guide recess 537 configured to receive the guide element 536 during movement to the capture release position.

The bolt retraction gear 520 is slightly spring-loaded using the urging device 524 so that the bolt retraction gear 520 is urged clockwise toward the position shown in FIG. 22B when the actuator assembly 522 is activated. Has been done. When the gears 520, 80b are engaged as shown in FIG. 22B, the lock dial 24 is such that the drive gear element 80 is rotated through the engagement of the first drive gear portion 80a with the spindle gear 78. , May be manually rotated (see FIG. 19).

Actuator assembly 522 may further include actuator 538 operably connected to rotary cam 540 to move the guide element 536 as illustrated in FIGS. 20 and 21. The cam 540 includes a protrusion 542. The protrusion 542 is adjacent to the guide element 536 in the first position. When the cam 540 rotates to the second position, the protrusion 542 engages with the guide element 536 to move the guide element 536 from the capture position to the capture release position. Normally, the guide element 536 prevents rotation of the bolt retreat gear 520, for example as illustrated in FIG. 22A. However, as illustrated in FIGS. 23A-23B, when the protrusion 542 of the cam 540 rotates to move the guide element 536 slightly downward toward the rear casing half body 512b, the bolt retreat gear 520 moves the drive gear element. The bolt retract gear 520 illustrated in FIGS. 22A-22C can be moved or rotated clockwise so that it can engage the second portion 80b of 80.

Actuator assembly 522 further includes a clutch mechanism 544 for operably and rotatably elastically engaging the cam 540 to the actuator 538, as illustrated in FIGS. 20 and 21. The clutch mechanism 544 includes a hub 546 having a proximal wall 548 connected to an actuator 538. According to an exemplary embodiment, the actuator 538 is an electric motor. The clutch mechanism 544 further includes a pivot stopper 550 and a clutch torsion spring 552 to transmit the rotation of the hub 546 to the cam 540. Specifically, the cam 540 is positioned on the hub 546 so as to contact the proximal wall 548. Similarly, the clutch torsion spring 552 is positioned on the hub 546 and engages with the cam arm 554 of the cam 540. In this regard, the cam 540 and the clutch torsion spring 552 may rotate freely with each other on the hub 546, unless the clutch torsion spring 552 further engages with the pivot arm 558 of the pivot stopper 550. The pivot stopper 550 is firmly attached to the distal end 556 of the hub 546 so that the pivot arm 558 engages the clutch torsion spring 552 as the hub 546 is rotationally driven by the actuator 538. The clutch torsion spring 552 is subsequently rotatably engaged with the cam arm 554 to elastically rotate the cam 540.

Further, the guide element 536 is elastically attached to the rear casing half body 512b in a capture position close to the cam 540 and close to the platform 560. The guide element 536 includes a lateral portion 562 extending towards a lateral portion 564 forming a substantially right angle along the guide element 536. More specifically, the guide element 536 is a wire guide that is bent at a substantially right angle to form a lateral portion 562 and a lateral portion 564.

The lateral portion 562 is essentially elastic to move with the lateral portion 564 between the capture and release positions. The side portion 562 is basically placed between the catch member 566 and the guide stopper 568 of the platform 560. In FIGS. 20 and 23A with respect to the capture position, the side adjacent to the catch member 566 so that the lateral portion 564 extends and contacts the bolt retract gear 520 to prevent the bolt retract gear 520 from moving. The square portion 562 is illustrated. On the other hand, FIG. 23 shows the guide element 536 in the capture release position. The protrusion 542 of the cam 540 moves the side portion 562 toward the rear casing half body 512b and away from the bolt retreat gear 520 until the lateral portion 562 comes into contact with the guide stopper 568. In particular, the cam 540 and the guide element 536 may press the guide stopper 568, while the pivot stopper 550 may continue to rotate and bend the clutch torsion spring 552. According to an exemplary embodiment, the actuator 538 is configured to operably rotate the hub 546 and the pivot stopper 550 over a predetermined period of time. More specifically, the actuator 538 rotates the hub 546 and the pivot stopper 550 for a period of time greater than or equal to the time required to move the guide element 536 against the guide element 568. Therefore, the pivot stopper 550 keeps the clutch torsion spring 552 rotating with respect to the fixed cam 540, and the clutch torsion spring 552 is wound tighter between them.

As illustrated and briefly described in FIGS. 19A-21, the bolt retreat gear 520 is urged by the urging device 524 towards the drive gear element 80. The urging device 524 basically includes a hollow drum body 572 rotatably attached to the rear casing half body 512b and a kicker torsion spring 574 positioned around the drum body 572. In addition, the front portion 576 of the drum body 572 includes a gear forward lever 578, a stop lever 580 and a kicker arm 582. The kicker torsion spring 574 is wound around the stop lever 580 and the rear casing half body 512b to rotatably urge the drum body 572. The gear forward lever 578 extends to the notch portion 584 of the bolt retract gear 520 and engages with the notch portion 584. Therefore, when the bolt retreat gear 520 is in the disengagement position, the bolt retreat gear 520 presses the gear advance lever 578 and further tightly winds the torsion spring 574 as shown in FIG. 22A. On the other hand, FIG. 22B shows a state in which the guide element 536 moves toward the capture release position and the gear forward lever 578 directs the bolt reverse gear 520 toward the engagement position with the drive gear element 80. Finally, the stop lever 580 is in a position to re-engage with the bolt retreat gear 520 while moving from the engaging position to the disengaging position, in order to stop the rotation of the drum body 572, the rear casing half body 512b. Engage with.

When the bolt retreat gear 520 is engaged with the drive gear portion 80b as shown in FIG. 22B, the bolt retreat gear 520 rotates around its pivot shaft 68a and a pin 68b fixed to the bolt retreat gear 520 It rises from a position arranged at the recess 64a of the bolt guide member 516 and the end 90a of the curved slot of the bolt guide member 516 or the pin guide 90 (FIG. 19). The pin 68b also extends further through the slot 586 in the lock bolt 518, and as the bolt retreat gear 520 rotates, the pin 68b moves upward in the slot 586 as illustrated in FIGS. 22B and 22C. At the same time, the lock bolt 518 is moved into the lock casing 512 via the bolt guide member 516. By rotating the dial 24, shaft 52 and gears 78, 80, 520 in opposite directions, the lock bolt 518 is extended to return to its fully extended position, and the bolt retreat gear 520 is lateral to the guide element 536. Part 564 returns to the initial position illustrated in FIG. 22A.

24A to 24C show the bolt retreat gear 520 that moves from the disengagement position to the engagement position as described above. In this regard, the pivot arm 558 allows the cam arm 554 to rotate the clutch torsion spring 552 and subsequently rotate the protrusion 542 of the cam 540 towards the guide element 536. The bolt retracting member 520 further includes an inclined edge portion 588 that cooperates with a curved end portion 590 of the lateral portion 564. While the curved end 590 moves from the capture position to the release release position, the lateral portion 564 can be urged by the bolt retreat gear 520 so that the inclined edge 588 effectively falls off the curved end 590. To. The curved end portion 590 moves toward the inclined edge portion 588 in order to return the guide element 536 from the capture release position to the capture position. Upon reaching the sloping edge 588, the curved end 590 engages the sloping edge 588 and directs the bolt retreat gear 520 to the disengagement position. Therefore, the guide element 536 overcomes the urging force of the urging device 524 applied to the bolt retreat gear 520 and returns the bolt retreat gear 520 to the initial position shown in FIG. 22A.

The lock bolt 518 includes a recess 592 that cooperates with a detent ball 594 to positively align the lock bolt 518 to the extension position as illustrated in FIGS. 20 and 25A-25B. Specifically, the ball spring 596 elastically supports the detent ball 594 with respect to the lock bolt 518 in the bolt guide member 516. The recess 592 is positioned on the lock bolt 518 such that the detent ball 594 urged when the lock bolt 518 is in the extension position engages the recess 592 slightly. Finally, slot 586 in the lockbolt 518 has a wide portion 598 so that the detent ball 594 is effectively centered in the recess 592 to facilitate the final advance towards the extension position of the lockbolt 518. Has. In this regard, the ball spring 596, the detent ball 594 and the recess 592 are each selected to have the expected holding stress on the lock bolt 518 in the extension position.

25A-25B show a thermal relocking device 600 positioned in the cavity 602 of the bolt guide member 516 to prevent the lock bolt 518 from moving to the retracted position. The thermal relock device 600 includes a thermal disk 604, a relock pin 606, and a pin spring 608. Basically, the pin spring 608 urges the re-lock pin 606 against the thermal disk 604 in the cavity 602 adjacent to the lock bolt 518. The thermal disc 604 covers the opening 610 to prevent the pin spring 608 from exerting a force on the relock pin 606 at least partially through the opening 610. Under normal operating conditions, the thermal disc 604 is strong enough to hold the relock pin 606 in the operating position. Due to the influence of time and threshold temperature, in the thermal disk 604, the pin spring 608 exerts a force on the re-lock pin 606 through the opening 610 so as to engage the lock bolt 518 in the lock channel 612 in the illegal interference position. May be weakened. For example, FIG. 25B shows a lock 510 that is illicitly interfered with by bringing a welding torch close to the lock casing 512. When the torch raises the temperature of the thermal disk 604 to the threshold temperature over a sufficient period of time, the relock pin 606 engages the lock bolt 518 in the extension position. Therefore, the lock bolt 518 is held in the extension position so as to prevent the lock 510 from being released.

For each of the embodiments of locks 10, 110, 210, 310, 410, 510 having a lock dial 24 for the user input device 15 as described above, the circuit board 62 and encoder 84 are illustrated in FIGS. 26A-27. The lock 10 is programmed to be controlled by a particular set of actuation instructions. In the operating modes of FIGS. 26A and 26B, when a counterclockwise rotation of the lock dial 24 is detected, the lock power supply is activated and the number of incorrect combination inputs attempted since the lock was last unlocked. The authentication information or appropriate combination values X, Y, Z are acquired from the memory together with the value P indicating. The LED 46 flashes red P times so that if another person attempts to destroy it through the unsuccessful door 12, it will be recognized by the legitimate user of the lock. After blinking to indicate a penalty, the LED 46 blinks red and green for one dial rotation, followed by a continuous glow in green. When the controller detects that the counterclockwise rotation has stopped and the clockwise rotation has begun, the controller subsequently stores the dial value entered at the time of the stop as X ₁ , and then the Y ₁ value and Z ₁ Repeat this process to get the value. The controller then verifies that the input dial values X ₁ , Y ₁ , Z ₁ match the appropriate combination values X, Y, Z. If these values do not match, the LED 46 flashes red for 10 seconds, increasing the P-value by 1 before the lock 10 is powered down. If these values match, the servomotor 70 or actuator 326 is engaged to allow the bolt 54 to retract and the P value is set to zero. As long as the lock bolt 54 remains in the open or retracted position, the LED 46 flashes red once every 10 seconds to indicate that the lock 10 is in the open position. When the lock bolt 54 is moved to return to the extended position, the lock power is turned off.

Referring to FIG. 27, the configuration mode is activated when the change key is inserted into the lock 10. The lock power supply is activated and the appropriate combination values X, Y, Z are acquired from the memory. When a counterclockwise rotation of the dial is detected, the lock obtains user input values X ₁ , Y ₁ , Z ₁ according to the procedure described in FIGS. 26A and 26B. After a 5-second pause, the user input process is repeated and the values X ₂ , Y ₂ , Z ₂ are stored. The controller then sets the appropriate combination values X, Y, Z equal to the average of the two sets of user input values. As a result, the configuration mode confirms that the desired new combination is set correctly.

As will be appreciated by those skilled in the art, various embodiments of locks 10, 110, 210, 310, 410, 510 can be activated using an alternative user input device 15 instead of the mechanical lock dial 24. For example, an electronic keypad can be placed outside the door 12 for electronic input of combination values. Alternatively, the user input device 15 can include a fingerprint authentication device or a retinal scan matching device. The internal components of the lock 10 disposed within the lock casing 14 operate as described above regardless of the selected user input device 15.

Although the present invention has been illustrated in the description of various embodiments and such embodiments have been described in great detail, the claims of the present application are not intended to be limited or limited to such details. Further benefits and examples of modifications will be readily apparent to those skilled in the art. For example, the configuration mode detailed in FIG. 27 may be modified to require a set of three user input values that are averaged to set a new combination. As such, the invention is not limited to the particular details described and illustrated in its broader aspects. The various features disclosed herein may be used in combination if desired or depending on the particular application. Therefore, it may be expanded from the details described in the present specification as long as it does not deviate from the purpose and scope of the claims of the present application.

10 Lock 12 Door 14 Lock Casing 15 User Input Device 16 Dial Housing 18 Dust Cover 20 Snap Fitting Connector 22 Opening 24 Lock Dial 26 Window 28 Mirror 30 Protruding Part 32 Dial Plate Part 34 Number Combination Number 36 Insert 38 Fixture 40 Dial plate part 46 LED
48 Battery 50 Battery door 52 Spindle shaft 54 Lock bolt 56 Back 58 Nut 60 Spindle sleeve 62 Circuit board 64 Bolt guide member 68 Bolt retreat gear 70 Servo motor 72 Pivot block 74 Cover 76 Rotation output element 78 Manual gear 80 Drive gear element 80a No. 1 Gear Part 80b 2nd Gear Part 82 Opening 84 Encoder 86 Slot 88 Key 94 Mounting Bolt 96 Circuit Breaking Device 110 Lock 112 Bolt Extension 114 Retreat Bolt Shield 116 Fixture 118 Bolt Guide Member 124 Bolt Side Block Member 128 Drive Rod 210 Lock 212 Spindle Gear 214 Drive Gear 214a Second Drive Gear Part 214b First Drive Gear Part 216 Bolt Retreat Gear 218,220 Two Tooth Relief 310 Lock 312 Spindle Gear 314 Drive Gear 314a First Gear Part 314b Second Gear Part 316 Bolt Retraction Gear 318,320 2 Tooth Relief 324 Input Shaft 326 Actuator 410 Lock 412 Drill Hole 414 Lock Casing 510 Lock 512 Lock Casing 514 Circuit Board 516 Bolt Guide Member 518 Lock Bolt 520 Bolt Retreat Gear 522 Actuator Assembly 524 Bias Device 526 Sensor 528 Encoder 530 Rotary Sensor 532 Display 534 Filtering Device 536 Guide Element 537 Guide Recess 538 Actuator 540 Rotating Cam 542 Protrusion 544 Clutch Mechanism 546 Hub 548 Proximal Wall 550 Pivot Stopper 554 Cam Arm 556 Pivot Arm 556 562 Side part 564 Lateral part 566 Catch member 568 Guide stopper 57 2 Drum body 578 Gear forward lever 580 Stop lever 582 Kicker arm 584 Notch part 586 Slot 588 Inclined edge 590 Curved end 594 Return stop ball 596 Ball spring 598 Wide part 600 Thermal Relocking Device 602 Cavity 604 Thermal Disc 606 Relock Pin 608 Pin Spring 610 Opening 612 Lock Channel

Claims (8)

It is a locking mechanism;
With a lock bolt that can be moved between the extended position and the retracted position;
With a bolt retreat gear that is operably connected to the lock bolt and is movable between the engaging and disengaging positions;
With a manual gear configured to engage the bolt retract gear in said engagement position and drive the lock bolt between the extension position and the retracted position;
With a rotatable lock dial configured to receive user input information;
With a display for visualizing user input information;
With a sensor configured to detect the rotation of the lock dial;
A controller configured to store authentication information and collate user input information, wherein the controller rotates the lock dial to the user input information visualized on the display via a predetermined algorithm. With a controller, which is operably connected to the sensor and the display for conversion;
When the controller confirms that the user input information and the stored authentication information match, the bolt retreat gear is moved from the disengagement position to the engagement position by the manual gear.
The sensor is a rotary sensor, and the locking mechanism further includes an encoder attached to the manual gear, and the rotary sensor directly detects rotation of the manual gear via the encoder. Lock mechanism. The locking mechanism according to claim 1, wherein the rotatable lock dial is mechanically connected to the manual gear. The lock mechanism according to claim 1 , wherein the user input information visualized on the display is basically random from the rotation position of the lock dial. The locking mechanism according to claim 3 , wherein the algorithm converts the rotation rate of the lock dial into the user input information. The first aspect of the present invention is further comprising a filtering device that covers at least a part of the display, and the filtering device is configured to prevent the display from being visually recognized from a plurality of viewing angles. Lock mechanism. It also has a thermal relock device that includes a relock pin.
The relock pin is movable under the influence of time and temperature due to the engagement of the lock bolt in the extension position so that the relock pin prevents the lock bolt from moving to the retracted position. The locking mechanism according to claim 1, wherein the locking mechanism is the same. It further comprises a lock casing that surrounds the controller, the manual gear, and the bolt retreat gear.
The lock casing has a first portion and a second portion.
1. The first and second portions are permanently sealed together so that the separation of the first and second portions damages at least a portion of the lock casing. The locking mechanism described in. It further comprises a lock casing that surrounds the controller, the manual gear, and the bolt retreat gear.
The locking mechanism of claim 1, wherein the locking casing is at least partially formed from a substantially translucent material in order to make evidence of unauthorized interference with the locking visible.

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