JP2019090312A - High security lock - Google Patents

Abstract

To provide a high security lock configured for use in safes and other security structures or areas.SOLUTION: The high security lock includes: a lock bolt 54 movable between an extended position and a retracted position: a bolt retraction gear 68 coupled to the lock bolt 54; and a manually-driven gear 78. When a controller verifies that user-input information is correct for unlocking the lock, the bolt retraction gear 68 and the manually-driven gear 78 are operatively coupled such that the bolt retraction gear 68 and the manually-driven gear 78 can move the lock bolt 54 from the extended position to the retracted position.SELECTED DRAWING: Figure 7

Description

This application claims the benefit of US Provisional Application Ser. No. 61 / 094,730 filed Sep. 5, 2008, filed on Sep. 4, 2009, claiming the benefit of US Provisional Application Ser. One of U.S. Patent Application Publication No. 13 / 331,222 (pending pending) filed Dec. 20, 2011, which is a continuation application of U.S. Patent Application Serial No. 12 / 554,372 (current U.S. Patent No. 8,091,392). Application that is incorporated herein by reference in its entirety.

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

  In many cases, documents with properties that require careful handling or articles of very valuable value need to be stored in safes or other structures. The structure typically includes a locking mechanism, and the structure is basically designed to be accessible only by a small number of selected parties, and it is possible for the parties to lock the locking mechanism. Predefined combination codes are provided to help with the release. Unauthorized persons use simple lock picking tools or sophisticated equipment 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 the lock become more sophisticated, the locking mechanism must be improved to withstand such advanced lock picking methods. Mechanical and / or electrical elements have been used for locking to provide a complex barrier to potentially unauthorized persons attempting to break into a structure. However, unauthorized persons continue to drill and attack even with these improved locking mechanisms through the opening of the locking casing towards the interior of the locking mechanism. The frequently attacked portion of the lock casing includes a mounting bolt and a spindle attachment where the spindle from the combination dial enters the lock casing.

  In addition, it is known for unauthorized persons who attempt to break into the structure to use a device to apply high acceleration to the combination dial to overcome the security element of the locking mechanism. The high acceleration of the gear train can sometimes cause the gears that control the lock bolts to be forced to rotate and unlock without entering the proper combination. Such high acceleration devices may include so-called automatic dialing devices which attempt all possible combinations quickly until the appropriate combination is identified. Even if an unauthorized person does not succeed in opening the locking mechanism in the above manner, the rapid collision of gear teeth in the gear train caused by high acceleration frequently breaks the gear train and causes failure of the locking mechanism. May cause proper operation. Gear tooth collisions may also provide audible information that can be sensed and used by an unauthorized person to identify a programmed combination that triggers 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 storage devices. For example, the severity of the relevant U.S. government specification is easily understood from the Federal Specification FF-L-2740 "FEDDER SPECIFICATION: LOCKS, COMBINATION" dated October 12, 1989, for all federal agencies. In Section 3.4.7 “Combination Redial”, when the lock bolt is extended to its lock position, “the locked combination must not be able to reopen the lock without being completely re-dialed”. Required Section 3.6.1.3 “Emanation Analysis” requires that the lock not emit sounds or other signals that can be used to secretly release the lock within a specified period of time. Further, the U.S. government requirements include "FEDDER SPECIFICATION: COMBINATION LOCK, MECHANICAL" in Federal Specification FF-L-2937, dated January 31, 2005. In this document, in Section 4.7.4, “Endurance Test”, the sample lock “performed 50 times including 3 opening and closing tests after each change, to ensure the proper combination to set the functionality. It is required to be repeated after changing the combination. Section 4.7.7 “Resistance to Unauthorized Opening Test” requires that the lock can not be opened by mechanical manipulation or automatic dialing by a computer assisted device for at least 20 hours.

  Therefore, it is desirable to improve a highly secure lock to address the frequently attacked areas of the lock mechanism while fully complying with 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 coupled to a bolt retraction gear movable between an engaged position and an disengaged position. In the engaged position, the bolt retraction 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 actuates an actuator assembly having a guide element operable between a capture position and a capture position. In the capture position, the guide element blocks the movement of the bolt retraction gear. In the capture release position, the guide element permits movement of the bolt reverse gear. The guide element prevents movement of the bolt reverse gear towards the engaged position until the controller confirms that the user input information matches the stored authentication information.

  In one aspect, the guide element engages the bolt retraction gear during movement from the capture release position to the capture position to direct the bolt retraction gear toward the disengaged position. The actuator assembly further includes a cam movable between the first position and the second position, an actuator, and a clutch mechanism. The actuator engages the cam via the clutch mechanism. The cam is positioned proximate to the guide element in the one position and engaged with the guide element in the second position. The cam thus 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 comprises a locking bolt which moves between the extended position and the retracted position. The lock bolt is coupled to a bolt retraction gear movable between an engaged position and an disengaged position. In the engaged position, the bolt retraction gear is engaged with the manual gear. The locking mechanism further includes a lock dial for receiving user input information and a sensor configured to detect rotation of the lock dial. The display is configured to visualize user input information and the controller is configured to match the user input information with the stored authentication information. The controller is operatively connected to the sensor and the display to convert the rotation of the lock dial into user input information to be visualized on the display via a predetermined algorithm. When it is confirmed that the user input information is the stored authentication information, the bolt reverse gear is moved from the disengagement position to the engagement position with the manual gear.

  In one aspect, user input information visualized on the display is basically selected randomly from the rotational position of the lock dial. The algorithm further converts the lock dial rotation rate into user input information selected by the user.

  A further embodiment of the locking mechanism comprises a lock casing having therein the internal components of the lock. The lock casing is at least partially formed of a substantially translucent material. At this point the internal components of the lock can be viewed from the outside of the casing so that evidence of tampering with the lock can be seen. 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 to one another such that dividing the first and second parts breaks at least a portion of the lock casing.

  In use, the method of actuating the lock includes capturing the bolt retraction gear with the guide element in the capture position to prevent movement of the bolt retraction gear towards engagement with the manual gear. The method further includes the steps of recording user input information from a user input device and verifying that the user input information matches the authentication information stored in the controller. Further, the method includes rotating the cam of the actuator assembly to engage the guide element to move the guide element to the uncaptured position. Additionally, the method includes the step of disengaging the guide element from the bolt retraction gear to enable engagement of the bolt retraction gear with the manual gear after the user input information is verified. The method further includes driving the lock bolt to the retracted position by manually driving the gear using a bolt retraction gear.

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

  Various further objects, advantages and features of the present invention will become apparent upon reading the following detailed description of exemplary embodiments in conjunction with the accompanying drawings.

  BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of this description, illustrate embodiments of the invention in conjunction with the foregoing general description of the invention and the following detailed description of the embodiments. It helps to explain the principle of

FIG. 1 is a perspective view of a highly secure lock constructed in accordance with an embodiment of the present invention. FIG. 2 is an exploded perspective view of the lock illustrated in FIG. 1; It is a disassembled perspective view from the back of a lock. FIG. 7 is a perspective cross-sectional view of the lock cut along its longitudinal central axis; FIG. 5 is an exploded perspective view of the lock casing and bolt retraction hardware. FIG. 7 is a partially exploded perspective view illustrating various bolt retraction hardware. FIG. 10 is a perspective view of a bolt retraction assembly. FIG. 1 is a partially cutaway front view showing a bolt retraction hardware with bolts in an extended or locked position. FIG. 8B is a front view similar to FIG. 8A showing an initial portion of the bolt retraction sequence. FIG. 8B is a front elevational view similar to FIG. 8B showing bolt retraction hardware associated with the fully retracted position of the bolt. 9 is a cross-sectional view taken along line 9A-9A of FIG. 8A. 9 is a cross-sectional view taken along line 9B-9B of FIG. 8B. FIG. 9 is a cross-sectional view taken along line 9C-9C of FIG. 8C. FIG. 2 is a rear perspective view of the lock of FIG. 1 with a partially disassembled lock casing to show circuit breaker coils; FIG. 7 is an exploded perspective view of an alternative embodiment of the lock casing and bolt retraction hardware. FIG. 12 is an exploded view of the bolt retraction hardware and retraction mounting screw shield of FIG. 11; FIG. 12 is a perspective view of the bolt retraction hardware and retraction mounting screw shield of FIG. 11; FIG. 12 is a front view illustrating the retraction mounting screw shield of FIG. 11 in a locked position of the bolt retraction hardware. FIG. 14B is a front elevation view similar to FIG. 14A illustrating the initial portion of the bolt retraction sequence. FIG. 14B is an elevational view similar to FIG. 14A showing the fully retracted position of the bolt and the associated rotation of the retracted mounting screw shield. FIG. 18 is a partially cutaway front view of another alternative embodiment of the lock showing the bolt retraction hardware with the bolt in the extended or retracted position. FIG. 15B is a front elevational view similar to FIG. 15A showing an initial portion of the bolt retraction sequence. FIG. 15B is a front elevational view similar to FIG. 15A showing the fully retracted position of the bolt and the associated bolt retraction hardware. FIG. 18 is a partially cutaway front view of an alternative embodiment of a lock showing bolt retraction hardware with the bolt in an extended or retracted position. FIG. 16B is a front view similar to FIG. 16A showing an initial portion of the bolt retraction sequence. FIG. 16B is a front elevation view similar to FIG. 16A showing the bolt retraction hardware associated with the fully retracted position of the bolt. FIG. 16B is a partially cut away inverted front view of the lock of FIG. 16A showing bolt retraction hardware with bolts in an extended or retracted position. FIG. 16B is an inverted elevational view similar to FIG. 16A showing an initial portion of the bolt retraction sequence. FIG. 16B is an inverted elevational view similar to FIG. 16A showing bolt retraction hardware associated with the fully retracted position of the bolt. FIG. 18 is a rear perspective view of another alternative embodiment of a lock in which the visible damage from unauthorized unauthorized interference is illustrated, comprising a lock case. FIG. 10 is a perspective view of a high security lock according to yet another alternative embodiment of the present invention. FIG. 7 is an exploded perspective view of the lock casing and bolt retraction hardware. FIG. 7 is an exploded perspective view of a portion of the lock casing and bolt retraction hardware. FIG. 5 is a partially exploded perspective view of a bolt retraction assembly. FIG. 5 is a partially cutaway front view showing bolt retraction hardware with the bolt in an extended or locked position. FIG. 8B is a front view similar to FIG. 8A showing an initial portion of the bolt retraction sequence. FIG. 8B is a front elevation view similar to FIG. 8B illustrating bolt retraction hardware associated with the fully retracted position of the bolt. FIG. 23 is a cross-sectional view taken along line 23A-23A of FIG. 22A. FIG. 23 is a cross-sectional view taken along line 23B-23B of FIG. 22C. It is an enlarged view which shows a part of FIG. 23A. FIG. 22C is an enlarged cross-sectional view taken generally along line 24B-24b of FIG. 22B. It is an enlarged view which shows a part of FIG. 23B. FIG. 25 is a cutaway view taken along line 25A-25A of FIG. 22 showing the thermal relock device in an actuated position. FIG. 25B is a cross-sectional view similar to FIG. 25A showing the thermal relock device in the incorrect interference position. FIG. 6 is a flow chart showing control logic of an operating mode for one embodiment of a lock. FIG. 6 is a flow chart showing control logic of an operating mode for one embodiment of a lock. FIG. 6 is a flowchart illustrating control logic in configuration mode for one embodiment of a lock.

  FIG. 1 illustrates one embodiment of a secure lock 10 coupled to a door 12 of a structure, for example. The lock 10 comprises 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. A dust cover 18 may be coupled to the dial housing 16 in a removable manner using a suitable snap fit connector 20 and has, for example, an opening 22 through which the lock dial 24 passes. To extend. Dial 24 may be rotated to enter a numeric combination, and the combination's numbers can be viewed through window 26 in dial housing 16 by reflection on mirror 28, as described below.

  FIG. 2 is an exploded view of the user input device 15 and its contents. Dial 24 includes a protruding portion 30 which can be gripped by the user by hand, and a plate portion 32 (see FIG. 3) which includes numbers 34 on the back thereof for number combination. A brass insert 36 is secured to the dial 24 using screw fasteners 38. The brass insert 36 can provide a weight for the dial 24 and acts as a bearing member for rotation relative to the portion 40 of the dial housing 16. Dial housing 16 includes windows 42, 44 to allow the numbers on the back of dial plate portion 40 to be visible through reflection at mirror 28. LED indicator lights 46 are provided and may be used in various ways to provide an indication of combination input. A battery 48, such as a standard 9 volt battery, may be removably disposed within the dial housing 16 via the battery door 50. The battery 48 provides power for an electric circuit and a servomotor to be described later. A rotating spindle shaft 52 is provided to transfer the rotation of the dial 24 to the bolt retraction hardware when the correct combination code is entered.

  FIG. 3 is a rear perspective view of the lock 10 showing the 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 secured with a nut 58 in a manner that allows the shaft 52 to rotate as the dial 24 is rotated. As further shown in FIG. 3, the back of dial plate portion 32 includes a number for the combination that becomes visible to the user when reflected by mirror 28 (FIG. 2).

  FIG. 4 is a longitudinal perspective cross-sectional view of the lock 10, including the various components described above. In particular, spindle shaft 52 is illustrated as extending completely through dial housing 16 and lock casing 14. One or more spindle sleeves 60 receive the spindle shaft 52 along its length. Such sleeves 60 help prevent unwanted intrusion into the lock casing 14 and prevent access to the various bolt retraction hardware when the shaft 52 is removed.

  Referring to FIG. 5, the lock casing 14 is shown in exploded form to show the circuit board 62 and various lock bolt retraction hardware, wherein the lock bolt retraction hardware comprises a bolt guide member 64 and a bolt 54. , A bolt retraction gear 68, an actuator 70, a pivot block 72, and a cover 74 for fixing to the pivot block 72 and for covering the rotational output element 76 of the actuator 70. The lock casing 14 includes a front casing half 14a and a rear casing half 14b. The circuit board 62 is disposed on the front inner side of the front casing half 14a. Therefore, if the drill is used to drill the lock casing 14 from the outside of the door 12, the drill tip is expected to contact the circuit board 62 first to invalidate the lock 10, making penetration more difficult. It becomes. A spindle gear 78 is coupled for rotation with the spindle shaft 52 and the connected dial 24 (FIG. 4). The spindle gear 78 meshes with the first gear portion 80 a of the drive gear element 80. The opposite or second gear portion 80b of the drive gear element 80 is engaged with the bolt retraction gear 68 when the correct combination code is input as illustrated in FIGS. 6 and 7 Extendably through the opening 82 in the aft casing half 14b so that it can mate. An 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 circuitry of the appropriate controller of the circuit board 62.

  With reference to FIGS. 6 and 7, the bolt retraction sequence will be described in conjunction with FIGS. 8A-8C and 9A-9C. When the correct combination code is input as recognized by the encoder and control circuitry, the actuator 70 is actuated to rotate its output element 76. The output element 76 includes a pin 76 a which rotates through the slot 86 in the pivot block 72 (FIG. 5) and travels through the slot 68 c in the bolt retraction gear 68. Normally, this pin 76a blocks the rotation of the bolt retraction gear 68, as shown for example in FIG. 8A. However, when the output element 76 of the actuator 70 is rotated to move the pin 76 a downward as illustrated in FIGS. 8A-8C, the bolt retraction gear 68 is configured such that the bolt retraction gear 68 is a second of the drive gear elements 80. It can be moved or rotated clockwise as illustrated in FIGS. 8A-8C so as to engage the portion 80b. Although not shown, the bolt retraction gear 68 uses, for example, a torsion spring with a small spring force so that when the actuator 70 is actuated, the bolt retraction gear 68 is urged clockwise toward the position illustrated in FIG. 8B. A slight spring load may be applied. When gear 68 and gear 80b are engaged as shown in FIG. 8B, dial 24 rotates drive gear element 80 through engagement of first drive gear portion 80b with spindle gear 78. So it is rotated by hand. As illustrated in FIGS. 8A-8C, spindle gear 78 is coupled to shaft 52 by key 88. As shown in FIG. When the bolt retraction gear 68 is engaged with the drive gear portion 80b as illustrated in FIG. 8B, the bolt retraction gear 68 rotates about its pivot shaft 68a and a pin 68b fixed to the bolt retraction gear 68 Is raised from the position accommodated in the recess 64a of the bolt guide member 64 and the end 90a of the curved slot or pin guide 90 of the bolt guide member 64 (FIG. 5). The pin 68b further extends through the slot 54a in the bolt 54 and as the bolt retraction gear 68 rotates, the pin 68b ascends upwardly in the slot 54a as illustrated in FIGS. 8b and 8C 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 retraction gear 68 is illustrated in FIG. 8A by the pin 76a. Return to the initial position. In this regard, the output element 76 is spring loaded using a spring 92 such that when the actuator 70 is deactivated the spring 92 causes the pin 76a to return to the initial position illustrated in FIG. 9A. The spring force of the output element 76 is strong enough to push the bolt retraction gear 68 towards the initial position illustrated in FIG. 8A.

  The use of dial plate portion 32 and mirror 28 allows battery 48 to be disposed within dial housing 16 in a space efficient manner. The lock casing parts 14a, 14b are mechanically fixed to one another, and when the lock casing parts 14a, 14b are broken open, the mechanical elements (not shown) securing the lock casing 14 to one another break. It will be appreciated that the bolts 94 extending through the lock casing 14 do not secure the lock casing portions 14a, 14b together, but merely serve to secure the lock casing 14 to the door 12, for example. Another method of tampering with the lock involves the use of an external hammer to exert a force on the spindle shaft 52 via the lock 10. Still, with existing locks, this does not move the casing 14 so that no "re-locking" features used in other high security locks are required. The actuator 70 is a servomotor 70 in the illustrated embodiment. For example, the use of a servomotor 70, such as a microservo opposite to a stepper motor, is advantageous. For example, servomotor 70 includes a relatively complex gear train with several revolutions to rotate output element 76 with only partial rotation as described above. As such, the servomotor 70 is difficult to operate in some incorrect manner. The pin 68b used for the bolt retraction gear 68 is anchored in the recess at the home position where the lock bolt 54 extends as illustrated in FIG. 8A. Therefore, if an unauthorized attempt is made to gain unauthorized access to the lock 10 and the lock bolt 54 is forced inwards, the force does not act on the gear train, but rather a bolt designed to withstand large forces It acts on the guide member 64.

  Referring to FIG. 10, lock 10 further includes a circuit breaker device 96. The circuit interruption device 96 of the illustrated embodiment comprises a continuous conductive wire having a first end 96a and a second end 96b. Each end 96 a, 96 b is electrically connected to the circuit board 62. The circuit interrupting device 96 is integrally connected to the main control circuit of the lock 10 so that the lock 10 can not operate if the circuit interrupting device 96 is broken. As illustrated in FIG. 10, the circuit breaking device 96 is disposed in close proximity to a spindle sleeve 60 which holds the spindle shaft 52 as the shaft 52 enters the lock casing 14. An unauthorized person attempting to deactivate 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, an attempt for unauthorized entry into the lock casing 14 via the spindle sleeve 60 breaks the circuit breaking device 96, thereby inhibiting this method of attacking the lock 10. The circuit breaking device 96 is illustrated in FIG. 10 as a coil covering the spindle sleeve 60. One skilled in the art will recognize that the circuit breaker device 96 may comprise multiple wires.

  Referring to FIGS. 11-14C, another embodiment of the lock 110 is illustrated. As shown most clearly in the exploded view of the lock casing 14 and the inner lock hardware of FIG. 11, the lock 110 comprises a first embodiment of the lock 10 such as the circuit board 62, the bolt retraction gear 68 and the actuator 70. Contains the same number of elements. In this application, the same elements are given the same reference symbols in the various embodiments disclosed. Although this embodiment of the lock 110 follows the same bolt retraction sequence as illustrated in FIGS. 6-9C described above, the lock 110 includes different lock bolts 112 and retraction bolt shields 114. Lock bolt 112 includes a slot 112 a configured to receive pin 68 b of bolt retraction gear 68. The lock bolt 112 further includes a pair of opposing recesses 112b used in the retraction bolt shield 114 as detailed below, and a bolt extension 112c. The bolt extension 112c is coupled to the lock bolt 112 using a screw fastener 116 disposed flush with the outer surface of the bolt extension 112c when the bolt extension 112c is disposed on the lock bolt 112. . In the embodiment of FIG. 11, the bolt extension 112c has a thickness of about one tenth (0.100) to three sixteenths (0.1875) of an inch. A variety of government contractors manufacture locks for the United States of America, and one of the major lock makers has designed lock bolts that are in the same plane as the lock casing when retreating, while others Major lock manufacturers design lock bolts that extend around the 3 / 16th of an inch (0.1875) of the lock casing when it is retracted. The bolt extensions 112 c can be added to the lock bolt 112 if desired for the selected door 12. As such, the lock bolt 112 can be configured to be used with any type of door.

  As shown in the above-described embodiment, the mounting bolt 94 of the lock casing 14 is accessible from the back 56 of the lock casing 14. An unauthorized person may remove the mounting screw 94 and replace the lock casing 14 with a lock body of a different mechanism to gain unauthorized access to the lock 110 when accessing such a back surface 56. To address these issues, the lock 110 of this embodiment includes a reverse 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 the recess 118 a and the curved slot 120 to engage the pin 68 b of the bolt retraction gear 68. The bolt guide member 118 further has a pair of longitudinally oriented openings 118 b formed on both sides of the bolt guide member 118. These longitudinally oriented openings 118b communicate with the laterally oriented slots 118c. The slot 118 c extends from the edge of the bolt guide member 118 to the longitudinal receiver 122 which holds the mounting bolt 94. The retracting bolt shield 114 is operable to move the blocking member 124 to the first member 126 at the non-circular opening 124a, the first member 126 at the non-circular opening 124a, and the non-circular opening 124a. And a non-circular drive rod 128 coupled thereto. While the drive rod 128 is positioned in one of the longitudinally oriented apertures 118b of the bolt guide member 118, the blocking member 124 is of the side slot 118c as best seen in FIG. It is at least partially arranged in one of them. The drive rod 128 and associated openings 124a, 126a are hexagonal in the illustrated embodiment, although 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 126 b configured to engage with the lock bolt 112, and more specifically to engage one of the recesses 112 b in the lock bolt.

  The operation of the retracting bolt shield 114 is illustrated in the series of drawings in FIGS. 14A-14C. In FIG. 14A, the bolt retraction gear 68 is just engaged with the gear train 78, 80 to initiate the retraction process of the lock bolt 112. When the lock bolt 112 is in the extended position, the block member 124 completely hides the mounting bolt 94 on the bolt side of the lock 110. In FIG. 14B, bolt retraction gear 68 is moved to partially retract lock bolt 112. In this actuated state, the blocking member 124 continues to hide the mounting bolt 94 as the first end 126b of the first member is moved into the recess 112b of the lock bolt but not rotated. As the bolt retraction gear 68 continues to retract the lock bolt 112, the recess 112b forces the first member 126 to rotate to the position illustrated in FIG. 14C. When the lock bolt 112 is fully retracted to such position, the drive rod 128 transmits the motion of the first member 126 to the block member 124 exposing the mounting bolt 94. When the spindle gear 78 drives the bolt retraction gear 68 and the lock bolt 112 back to the extended or locked position, the first member 126 engages again with the lock bolt 112b and rotates back to the position in FIG. 14A. Do. As such, the retracting 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 retraction bolt shield 114 can include a second pair of block members coupled for rotation with the bolt side block member 124 via a simple linkage. In such an embodiment, if the lock bolt 112 is extended, the bolt side block member 124 hides the mounting bolt 94 on one side of the lock 110 and if the lock bolt is retracted, the second pair of blocks A member may hide mounting bolt 94 on the opposite side of lock 110. As such, an unauthorized person must use the combination to enable lock 110 in order to access all four mounting bolts.

  Referring to FIGS. 15A-15C, an additional embodiment of the lock 210 is illustrated. The lock 210 operates with a bolt retraction sequence substantially similar to that described above and 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 with the spindle gear 212, and a second drive gear portion 214b. And a bolt retraction gear 216 configured to engage therewith. Similar to the previous embodiment, the bolt retraction gear 216 includes a pivot shaft 216a and a pin 216b supported and operated in corresponding slots 54a, 90 of the lock bolt 54 and the bolt guide member 64. Similar to the previous embodiment, when the lock bolt 54 is fully extended as illustrated in FIG. 15A, the bolt retraction gear 216 remains engaged with the second drive gear portion 214b. A 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 illustrated in FIG. 15A to engage the spindle gear 212 and drive gear 214 while the spindle gear 212 is rotated during input of the combination. To prevent. 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 76 a from the path of the bolt retraction gear 216. Instead, the controller waits until the spindle gear 212 is rotated to the position illustrated in FIG. 15B. At this time, the relief 218 in the spindle gear 212 is positioned 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 retraction gear 216 continues to rotate slightly downward as illustrated in FIG. 15 b, thereby rotating the drive gear 214 and towards the position for meshing with the spindle gear 212 first drive gear portion 214 a 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 illustrated in FIG. 15C, which is further behind the bolt retraction gear 216 via the second drive gear portion 214b. It leads to the rotation. In addition, pin 216b forces lock bolt 54 to retract to the position illustrated in FIG. 15C, thereby completing the bolt retraction sequence of lock 210.

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

  When the lock bolt 54 is fully extended, the pointing directions of the reliefs 320, 322 in the drive gear portions 314a, 314b on both sides disengage the drive gear 314 from both the spindle gear 312 and the bolt retraction gear 316. Is set as The drive gear 314 in this embodiment is mounted on the input shaft 324 and the actuator 326 is operatively coupled to the drive gear 314 at the opposite end of the shaft 324. The actuator 326 is disposed proximate to the circuit board 62 and is configured to rotate the shaft 324 and the drive gear 314. The actuator 326 is a low output drive device such as a geared servomotor, a non-geared servomotor or an air core rotary solenoid. When the proper combination is input to the lock 310, the circuit board 62 has the dial 24 such 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. Circuit board 62 then sends a signal to actuator 326, causing shaft 324 and drive gear 314 to simultaneously engage both spindle gear 312 and bolt retraction gear 316 as illustrated in FIGS. 16B and 17B. Rotate. As the user continues to rotate dial 24, spindle gear 312 drives drive gear 314 and bolt retraction gear 316 to the positions illustrated 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 combination input, and the actuator 326 is as small as 10% of the operating energy with the servo motor 70 of the above embodiment. It only requires operating energy. As such, this embodiment of the lock 310 further blocks unauthorized input through the door.

  Referring to FIG. 18, an alternative embodiment of the lock 410 is illustrated. The lock 410 includes a lock casing 414 formed 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 unauthorized entry is made to lock 414 or an attempt is made to destroy lock 410, translucent lock casing 414 clearly shows evidence of an attempted intrusion as illustrated in FIG. A drilled hole 412 through the casing 414 can be seen near the lock bolt 54. Unlike the opaque lock casing, the drilled holes 412 in the translucent lock casing 414 either repair the back 56 of the lock casing 414 with a material that hides the attempted intrusion without being detected by the person examining the It can not be closed. Further inspection of the lock 410 via the translucent lock casing 414 reveals any improper interference or problems with the components of the lock 410. As would be apparent to one skilled in the art, the translucent casing 414 of this embodiment can be used with the above-described embodiment to further prevent unauthorized interference with the lock.

  A further alternative to lock 510 in FIGS. 19A and 19B shows lock casing 512 configured in exploded form to illustrate circuit board 514 and various lock bolt retraction hardware. The lock bolt retraction hardware includes a bolt guide member 516, a lock bolt 518, a bolt retraction gear 520, an actuator assembly 522, and a biasing device 524. The lock casing 512 includes a front casing half 512a and a rear casing half 512b. The front and rear casing halves 512a, 512b are mechanically fixed to one another as described above using mechanical elements (not shown). In addition, the front and rear casing halves 512a, 512b are further permanently sealed together using an adhesive during manufacture of the lock 510. As such, an attempt to separate the forward and aft casing halves 512a, 512b at least partially damage the lock casing 512, indicating an unauthorized unauthorized intrusion into the lock 510.

  The circuit board 514 is disposed on the front inner surface of the front casing half 512a. As such, when a drill is used to drill the lock casing 512, entry is more difficult as it is anticipated that the drill tip will contact the circuit board 514 first, rendering the lock 510 inoperable. The spindle gear 78 is coupled for rotation with the spindle shaft 52 and the connected lock dial 24. Thus, like reference numerals associated with lock 510 indicate like features described above. The spindle gear 78 meshes with the first gear portion 80 a of the drive gear element 80. The opposite or second gear portion 80b of the drive gear element 80 is such that on entry of the correct combination code the second gear portion 80b can engage with the bolt retraction gear 520 as illustrated in FIGS. 20 and 21. , Extends through an opening 82 in the aft casing half 512b.

  The lock 510 further includes a sensor 526 configured to detect rotation of the lock dial 24. More specifically, 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 mechanically driven manually by the lock dial 24. The rotary sensor 530 is electrically connected to appropriate control circuitry on the circuit board 514. The rotary sensor 530 is positioned adjacent to the encoder 528, which is a magnet. The rotary sensor 530 senses the rotation of the drive gear element 80 since the rotary sensor 530 is positioned sufficiently close to the encoder 528 to sense the magnetic field of the magnet. In contrast, the position of the drive gear element 80 may be directly or indirectly associated with the position of the lock dial 24. The exemplary embodiment of circuit board 514 operates a predetermined algorithm based on the rotation of drive gear element 80 to convert the rotation of lock dial 24 into user input information. Further, the display 532 visualizes user input information converted from the rotation of the lock dial 24 through the algorithm. The display 532 is an LED display placed in a recess in the lock 510 to limit the viewing angle of the visualized user input information. Display 532 further includes a filtering device 534 covering at least a portion of display 532 to further impede viewing of user input information from a plurality of viewing angles.

  According to an exemplary embodiment, the algorithm converts the rate of rotation of the lock dial 24 into user input information to be visualized on the display 532. Thus, the user input information is distinct or random from the rotational position of the lock dial 24 to further block unauthorized access to the lock 510. It will be appreciated that while the exemplary embodiment of the algorithm converts the rate of rotation of the lock dial 24 into user input information, several other characteristics of the operation of the lock dial 24 may be used alone or in combination for use in the algorithm It may be used. For example, such characteristics may include, but are not necessarily limited to the position, orientation, velocity, acceleration and / or time of rotation of the lock dial 24.

  The bolt retraction sequence will be described with reference to FIGS. 20 and 21 associated with FIGS. 22A-22C and 23A-24C. Once the correct combination code to be visualized on display 532 has been entered to be authenticated by the control circuit, actuator assembly 522 is actuated and movement of bolt retraction gear 520 biased towards drive gear element 80 is It becomes possible. Actuator assembly 522 includes a guide element 536. Guide element 536 is operable between the capture position and the capture position. In the capture position, the guide element 536 blocks the movement of the bolt retraction gear 520, and in the capture position, the guide element 536 allows the movement of the bolt retraction gear 520. Additionally, the aft casing half 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 biasing device 524 such that the bolt retraction gear 520 is biased clockwise toward the position illustrated in FIG. 22B when the actuator assembly 522 is actuated. It is done. When the gears 520, 80b are engaged as shown in FIG. 22B, the lock dial 24 is rotated such that the drive gear element 80 is rotated through engagement of the first drive gear portion 80a with the spindle gear 78. , May be manually rotated (see FIG. 19).

  The actuator assembly 522 may further include an actuator 538 operatively connected to the rotating 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. Still, when the cam 540 is rotated to the second position, the projection 542 engages the guide element 536 to move the guide element 536 from the capture position to the capture release position. Typically, guide element 536 prevents rotation of bolt retraction gear 520, as illustrated, for example, in FIG. 22A. However, as the protrusions 542 of the cam 540 rotate to move the guide element 536 slightly downward towards the rear casing half 512b as illustrated in FIGS. 23A-23B, the bolt retraction gear 520 is a drive gear element A clockwise movement or rotation of the bolt retraction gear 520 illustrated in FIGS. 22A-22C is possible so as to engage with the second portion 80b of 80.

  The actuator assembly 522 further includes a clutch mechanism 544 for operatively and rotatably resiliently coupling the cam 540 to the actuator 538 as illustrated in FIGS. 20 and 21. Clutch mechanism 544 includes a hub 546 having a proximal wall 548 coupled to an actuator 538. According to an exemplary embodiment, 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, cam 540 is positioned on hub 546 to abut proximal wall 548. Similarly, clutch torsion spring 552 is positioned on hub 546 and engages cam arm 554 of cam 540. In this regard, the cam 540 and the clutch torsion spring 552 may freely rotate relative to one another on the hub 546 unless the clutch torsion spring 552 further does not engage the pivot arm 558 of the pivot stop 550. The pivot stop 550 is rigidly attached to the distal end 556 of the hub 546 such that the pivot arm 558 engages the clutch torsion spring 552 when the hub 546 is rotationally driven by the actuator 538. The clutch torsion spring 552 then rotatably engages the cam arm 554 to resiliently rotate the cam 540.

  Furthermore, the guide element 536 is resiliently attached to the aft casing half 512b in a capture position close to the cam 540 and close to the platform 560. Guide element 536 includes a lateral portion 562 that extends towards a transverse portion 564 that forms a generally right angle along guide element 536. More specifically, guide element 536 is a wire guide bent substantially at a right angle to form lateral portion 562 and lateral portion 564.

  The lateral portion 562 is essentially resilient to move with the lateral portion 564 between the capture position and the capture position. The side portion 562 is basically mounted between the catch member 566 and the guide stop 568 of the platform 560. 20 and 23A with respect to the capture position, the side adjacent to the catch member 566 such that the lateral portion 564 extends towards and contacts the bolt retraction gear 520 to prevent movement of the bolt retraction gear 520. The 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 towards the rear casing half 512 b and away from the bolt retraction gear 520 until the side portion 562 contacts the guide stopper 568. In particular, the cam 540 and the guide element 536 may press on the guide stop 568 while the pivot stop 550 may continue the rotation and bending of the clutch torsion spring 552. According to an exemplary embodiment, actuator 538 is configured to operatively rotate hub 546 and pivot stop 550 for a predetermined period of time. More specifically, actuator 538 rotates hub 546 and pivot stop 550 for a period of time greater than or equal to the time required to move guide element 536 against guide element 568. As such, the pivot stop 550 continues to rotate the clutch torsion spring 552 relative to the stationary cam 540 so that the clutch torsion spring 552 is more tightly wound between them.

  The bolt retraction gear 520 is biased toward the drive gear element 80 by the biasing device 524 as illustrated in FIGS. 19A-21 and described briefly. The biasing device 524 basically comprises a hollow drum body 572 rotatably mounted on the rear casing half 512 b and a kicker torsion spring 574 positioned around the drum body 572. In addition, the forward portion 576 of the drum body 572 includes a gear advancing lever 578, a stop lever 580 and a kicker arm 582. The kicker torsion spring 574 wraps around the stop lever 580 and the rear casing half 512b to rotatably bias the drum body 572. Gear advance lever 578 extends to and engages notch portion 584 of bolt retraction gear 520. As such, when the bolt retraction gear 520 is in the disengaged position, the bolt retraction gear 520 presses the gear advancement lever 578 to further tighten the torsion spring 574 as illustrated in FIG. 22A. FIG. 22B, on the other hand, shows the guide element 536 moving towards the capture release position and the gear advancing lever 578 directing the bolt retraction gear 520 towards the engaged position with the drive gear element 80. Finally, the stop lever 580 stops the rotation of the drum body 572 in a position to re-engage with the bolt retraction gear 520 during movement from the engagement position to the disengagement position. Engage with

  When the bolt retraction gear 520 is engaged with the drive gear portion 80b as illustrated in FIG. 22B, the bolt retraction gear 520 rotates about its pivot axis 68a and the pin 68b fixed to the bolt retraction gear 520 Ascending from the position located in 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 retraction gear 520 rotates, the pin 68b upwardly in the slot 586 as illustrated in FIGS. 22B and 22C. Simultaneously, the lock bolt 518 is moved into the lock casing 512 via the bolt guide member 516. By rotating the dial 24, the shaft 52 and the gears 78, 80, 520 in opposite directions, the locking bolt 518 is extended back to its fully extended position, and the bolt retraction gear 520 is in the lateral direction of the guide element 536. Portion 564 returns to the initial position illustrated in FIG. 22A.

  Figures 24A-24C each show a bolt retraction gear 520 moving from the disengaged position to the engaged position as described above. In this regard, the pivoting arm 558 allows the cam arm 554 to rotate the clutch torsion spring 552 and subsequently to rotate the projection 542 of the cam 540 towards the guide element 536. The bolt retraction member 520 further includes a beveled edge 588 cooperating with the curved end 590 of the lateral portion 564. The lateral portion 564 effectively allows for biased movement of the bolt retraction gear 520 such that the beveled edge 588 drops out of the curved end 590 while the curved end 590 moves from the capture position to the capture release position. Make it It should be noted that the curved end 590 moves towards the beveled edge 588 for return of the guide element 536 from the capture release position to the capture position. Upon reaching the beveled edge 588, the curved end 590 engages the beveled edge 588 to direct the bolt retraction gear 520 to the disengaged position. As such, guide element 536 overcomes the biasing force of biasing device 524 on bolt retraction gear 520 and returns bolt retraction gear 520 to the initial position illustrated in FIG. 22A.

  The lock bolt 518 includes a recess 592 that cooperates with the detent ball 594 to positively align the lock bolt 518 in the extended position as illustrated in FIGS. 20 and 25A-25B. Specifically, ball spring 596 resiliently supports detent ball 594 relative to lock bolt 518 within bolt guide member 516. The recess 592 is positioned on the lock bolt 518 such that the biased detent ball 594 slightly engages the recess 592 when the lock bolt 518 is in the extended position. Finally, the slot 586 in the lock bolt 518 is a wide portion 598 so that the detent ball 594 is effectively aligned with the center of the recess 592 to facilitate a final advancement towards the extended position of the lock bolt 518. Have. In this regard, ball spring 596, detent ball 594 and recess 592 are each selected to have the expected retention stress for lock bolt 518 in the extended position.

  25A-25B illustrate the thermal relock device 600 positioned within the cavity 602 of the bolt guide member 516 to prevent movement of the lock bolt 518 to the retracted position. The thermal relock device 600 includes a thermal disc 604, a relock pin 606 and a pin spring 608. Basically, the pin spring 608 biases the relocking pin 606 against the thermal disc 604 in the cavity 602 adjacent to the locking bolt 518. The thermal disc 604 covers the opening 610 to prevent the pin spring 608 from exerting a force on the relocking pin 606 at least partially through the opening 610. Under normal operating conditions, the thermal disc 604 is strong enough to hold the relocking pin 606 in the operating position. Note that due to the influence of time and threshold temperature, the thermal disc 604 applies a force to the relocking pin 606 through the opening 610 so that the pin spring 608 engages the locking bolt 518 in the locking channel 612 to the incorrect interference position. May weaken. For example, FIG. 25B shows a lock 510 tampered with by bringing the welding torch closer to the lock casing 512. As the torch increases the temperature of the thermal disc 604 to a threshold temperature for a sufficient amount of time, the relock pin 606 engages the lock bolt 518 in the extended position. As such, the lock bolt 518 is held in the extended position to prevent the lock 510 from opening.

For each of the embodiments of the locks 10, 110, 210, 310, 410, 510 having the lock dial 24 for the user input device 15 as described above, the circuit board 62 and the encoder 84 are illustrated in FIGS. 26A-27. The lock 10 is programmed to control the lock 10 by a specific set of actuation instructions. In the operating mode of FIGS. 26A and 26B, when the 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. Together with the value P indicating the authentication information or the appropriate combination values X, Y, Z from the memory. The LED 46 will flash red P times so that if another person is attempting to destroy through the unsuccessfully accessed door 12, it can be recognized by the authorized lock user. After flashing to indicate a penalty, the LED 46 flashes red and green for one dial turn and then continues to glow green. When the controller detects that the counterclockwise rotation has stopped and the clockwise rotation has been started, the controller subsequently stores the dial value entered at stop as X ₁ and the Y ₁ value and Z ₁ Repeat this process to get the value. The controller then checks if the entered dial values X ₁ , Y ₁ , Z ₁ match the appropriate combination values X, Y, Z. If the values do not match, the LED 46 flashes red for 10 seconds, increasing the P value by one 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 be retracted 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 back to the extended position, the lock power is dropped.

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

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

  While the invention has been illustrated by 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 restricted to such details. Additional advantages and modifications will be readily apparent to those skilled in the art. For example, the configuration mode shown in detail in FIG. 27 may be modified to require three series of user input values to be averaged to set a new combination. Thus, the present invention is not limited to the specific details described and illustrated in its broadest aspects. The various features disclosed herein may be used in combination depending on the need or the particular application. Accordingly, departures may be made from the details described herein without departing from the spirit and scope of the claims of the present application.

DESCRIPTION OF SYMBOLS 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 portion 32 dial plate portion 34 numeral for combination of numerals 36 insert 38 fixing member 40 Dial plate part 46 LED
48 battery 50 battery door 52 spindle shaft 54 lock bolt 56 back surface 58 nut 60 spindle sleeve 62 circuit board 64 bolt guide member 68 bolt reverse gear 70 servo motor 72 pivot block 74 cover 76 rotational output element 78 manual gear 80 drive gear element 80a No. Gear part 80b Second gear part 82 Opening 84 Encoder 86 Slot 88 Key 94 Mounting bolt 96 Circuit breaking device 110 Lock 112 Bolt extension 114 Retracting bolt shield 116 Fixing tool 118 Bolt guide member 124 Bolt side block member 128 Drive rod 210 lock 212 spindle gear 214 drive gear 214a second drive gear portion 214b first drive gear portion 216 bolt reverse gear 2 8, 220 Two Tooth Relief 310 Lock 312 Spindle Gear 314 Drive Gear 314a First Gear Part 314b Second Gear Part 316 Bolt Reverse Gear 318, 320 Two 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 reverse gear 522 actuator assembly 524 biasing 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 Part 544 Clutch mechanism 546 Hub 548 Proximal wall 550 Bot stopper 554 Cam arm 556 Distal end 558 Pivot arm 560 Platform 562 Side part 564 Lateral part 566 Catch member 568 Guide stopper 572 Drum main body 578 Gear advance lever 580 Stop lever 582 Kicker arm 584 Notch part 586 Slot 588 edge 590 Curved end 594 Detent ball 596 Ball spring 598 Wide part 600 Thermal relocking device 602 Cavity 604 Thermal disc 606 Relocking pin 608 Pin spring 610 Opening 612 Locking channel

Claims (9)

Lock mechanism;
A lock bolt movable between an extended position and a retracted position;
A bolt retraction gear operably coupled to said lock bolt and movable between an engaged position and an disengaged position;
A manual gear configured to engage the bolt retraction gear in the engaged position to drive the lock bolt between the extended position and the retracted position;
A rotatable lock dial configured to receive user input information;
A display for visualizing user input information;
A sensor configured to detect rotation of the lock dial;
A controller configured to store authentication information and match user input information, wherein the controller is configured to: rotate the lock dial into the user input information visualized on the display via a predetermined algorithm A controller operatively connected to the sensor and the display for converting;
When the controller confirms that the user input information matches the stored authentication information, the bolt reverse gear is moved from the disengagement position to the engagement position by the manual gear. Locking mechanism to feature.   The lock mechanism according to claim 1, wherein the rotatable lock dial is mechanically connected to the manual gear.   The sensor is a rotary sensor, and the lock mechanism further includes an encoder attached to the manual gear, and the rotary sensor directly detects the rotation of the manual gear through the encoder. The lock mechanism according to claim 2.   The lock mechanism according to claim 3, wherein the user input information visualized on the display is basically random from the rotational position of the lock dial.   5. The lock mechanism according to claim 4, wherein the algorithm converts the rotation rate of the lock dial into the user input information.   11. The device of claim 1, further comprising a filtering device covering at least a portion of the display, wherein the filtering device is configured to prevent viewing of the display from a plurality of viewing angles. Lock mechanism. It is further equipped with a thermal relock device that includes a relock pin,
The relocking pin is movable under the influence of time and temperature for engagement of the lockbolt in the extended position such that the relocking pin prevents movement of the lock bolt to the retracted position. The lock mechanism according to claim 1, wherein: And a lock casing surrounding the controller, the manual gear, and the bolt reverse gear.
The lock casing has a first part and a second part,
2. The device according to claim 1, wherein the first and second parts are permanently sealed to one another such that the separation of the first and second parts breaks at least a part of the lock casing. Locking mechanism described in. And a lock casing surrounding the controller, the manual gear, and the bolt reverse gear.
The locking mechanism according to claim 1, characterized in that the locking casing is at least partially formed of a substantially translucent material to reveal evidence of tampering with the locking.

Images