Electronic door lock device

Abstract

An electronic door lock device and an electronic door lock provide electronic components on the strike plate side of a door frame, rather than providing electronic components inside the actual door, which is a limitation on conventional electronic door lock devices. The unique design provides flexibility when using a standard door handle that is otherwise not usable in an electronic door lock. The electrical wiring connection does not need to involve the door itself so as to allow flexibility when any door is used and avoid any disconnection of the electrical wiring due to door movement when the door is opened and closed. The electromagnetic expansion block moves the auxiliary latch which locks the cam so as to prevent the door handle from rotating when locked. The cam is in contact with a link bar that engages the tongue to lock the door. Alternatively, a stopper, which is moved by an electromagnetic module, may be used to lock the cam.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic door locks, and more particularly to electronic door lock devices and electronic door locks powered from the door frame side rather than the door lock or the door itself. Background Art

[0002] Smart electronic door locks have been used in commercial and residential properties for many years with some success. The ability to open a door independent of a physical key has been widely accepted. Additionally, some smart electronic door locks offer the ability to lock and unlock remotely for user convenience. Also, the key codes in smart electronic door locks can be changed quickly and easily by the user. However, changing physical locks and keys involves a more complex process, such as changing the hardware. Additionally, physical keys can be lost, while smart electronic door locks can use key codes or biometric indicators (such as fingerprints) instead of physical keys.

[0003] However, despite these advantages, prior art smart electronic door locks still have several disadvantages. For example, many electronic door locks are powered by batteries that require periodic replacement of the batteries in the door lock. Additionally, power loss due to uncharged batteries can result in users being locked out of the property.

[0004] Another disadvantage of prior art electronic door locks is that components such as electronic circuitry and mechanical motor parts are located in the door and / or door handle. These components inside the door can be damaged or stop functioning due to the movement of the door slamming shut when opening and closing.

[0005] Furthermore, prior art smart locks have limited hardware for door handles and locks. Standard door handles and door handles with various designs are not available for use with prior art electronic door handles because smart electronic door locks require a dedicated door handle specific to the particular smart lock. This limited design of smart lock door handles reduces the design options and aesthetic requirements for property owners.

[0006] In addition, many smart lock devices hardwired to an electrical power source require the door to be drilled to accommodate the placement of wires through the door. Drilling a passage for wiring through the door can be particularly difficult for fire doors with certain requirements and in some instances cannot be drilled. Custom doors or other door modifications may be required to wire an electronic door lock into the door. It would be desirable to have a smart lock that can be wired to a power source in the property or other power source and allows the use of standard door handles and standard doors without customization.

[0007] Accordingly, there remains a critical need for an electronic smart door lock that allows the use of standard door handles and standard doors without the need to drill into the door to accommodate the wiring of the electronic door lock. Additionally, there remains a need to route the smart lock wiring to a continuous power source and avoid any damage to the electronic door lock components due to door collisions when opening and closing the door. SUMMARY OF THE INVENTION

[0008] The present disclosure aims to solve at least one of the technical problems existing in the prior art and provide more benefits. Accordingly, the present disclosure provides an electronic door lock device powered by a power source 40, which includes but is not limited to the electrical power of the property, solar power, rechargeable lithium battery power, external power not from the property, power generated inside the locking device, wireless charging of the locking device by contact charging or non-contact charging, or any other reliable power source, thereby improving the continuous and overall user experience of using the electronic smart lock.

[0009] The present disclosure also provides an electronic door lock device and / or an electronic door lock, wherein at least some of the electronic components or parts are on the striker plate side of the door frame rather than inside the actual door. This arrangement provides flexibility when using a standard door handle, which otherwise could not be used in an electronic door lock. The electrical wiring connection of the present disclosure is made through the striker plate and does not need to involve the door itself. Having the wiring in this area allows for greater flexibility when using any door without modification and without the need to drill for electrical wires to pass through. Additionally, having the components and wiring outside the door avoids any disconnection of the electrical wiring or damage to the electrical components due to door movement when opening and closing the door.

[0010] In one aspect, the expansion block moves the auxiliary latch, which locks the cam to prevent the door handle from rotating when the door is locked. The cam contacts the link bar, and the link bar engages the bolt to lock the door. When an electronic key is input into the device, the electronic door lock is unlocked. The electronic key includes but is not limited to fingerprint, password, user interface input, wireless token, key card, retina scan, biometric reading, facial recognition technology, NFC, RFID, radio frequency remote control, etc. After the electronic key is input, the electrical module drives the expansion block to retract, and the auxiliary latch spring causes the auxiliary latch to extend. When the user rotates the door handle shaft, the auxiliary latch disengages from the groove in the cam, allowing the cam to rotate. The rotation of the cam drives the link bar to move, and the link bar drives the bolt to retract from the striker plate to unlock the door.

[0011] On the other hand, a blocking block moved by an electromagnetic module can be used to lock the cam. The distal end of the blocking block is inserted into a groove of the cam to lock the cam. The blocking block can move toward the cam by a blocking block spring, electromagnetic force, etc. When an electronic key is input, the door is unlocked, and the electromagnetic module generates a magnetic field to move the blocking block toward the electromagnetic module. Once the blocking block is separated from the cam, the cam rotates freely. The rotation of the cam drives the link bar to move, and the link bar drives the latch to retract from the striking position and unlock the door.

[0012] The present disclosure also provides a door lock having the door lock device mentioned above. The door lock includes a bolt having a latch, and depending on the embodiment, includes a cam and / or a moving mechanism that may or may not include a printed circuit board assembly (PCBA).

[0013] A door lock device according to an embodiment of an aspect of the present disclosure includes:

[0014] A striking assembly and a lock body, the striking assembly including a power module that functions as an electric power module or an electromagnetic power module during operation, or wherein the power module is an electric power module or an electromagnetic power module.

[0015] The striking assembly further includes an expansion block provided in the electric power module for driving an auxiliary latch; or a blocking block outside the electromagnetic power module for locking the cam, and the cam can be connected to a door handle shaft and a standard door handle or any door handle.

[0016] The lock body includes a cam that can rotate or otherwise move about the center of the cam, wherein a hole is defined in the center of the cam for the door handle shaft to pass through; the cam also defines a groove for the distal end of the auxiliary latch or the distal end of the blocking block to enter and lock the cam; the cam also has a plurality of protrusions that move or perform other movements in a circular orientation path when the door is locked and unlocked.

[0017] Depending on the embodiment, it further includes a cam locking member that may be an auxiliary latch or a blocking block, which is provided between the power module and the cam for engaging with the groove in the cam. A link bar contacts the plurality of protrusions of the cam, and the movement of the link bar is controlled by the movement of the plurality of protrusions. A latch mechanism controlled by the movement of the link bar may also be included.

[0018] The bolt mechanism may further include a bolt body having a bolt, a bolt spring disposed on the body, a bolt positioning member, and a bolt cap; the bolt body contacts a connecting rod strip, and the connecting rod strip may be disposed between the cap and the bolt positioning member. The bolt can retract and extend into the doorframe striker plate. When the door in the doorframe is closed, the bolt extends into the doorframe striker plate, and the cam locking member moves toward the cam and engages the groove to lock the cam and prevent the cam from rotating and maintain the door locked.

[0019] Moreover, depending on the embodiment, when an electronic key is input wirelessly, through a user interface, or by other means, then the expansion block moves toward the electrical module to release the distal end of the auxiliary latch from the groove of the cam; or the electromagnetic module generates a magnetic field to move the blocking block closer to the electromagnetic module, releasing the distal end of the blocking block from the groove of the cam; the cam can now freely rotate when the doorknob shaft rotates, and causes the connecting rod strip to move to retract the bolt from the striker plate and unlock the door.

[0020] The door lock device according to an embodiment of the present disclosure may further include at least the following beneficial effects: no need to drill or wire inside the door; any door can be used with the present disclosure and any doorknob or door design; no need to replace the battery in the electronic door lock device of the present disclosure; removing the electronic components and hardware from the door reduces the threat of damage caused by the door being forced to close or open; and the user still maintains other benefits of the current electronic door lock device.

[0021] According to some embodiments of the present disclosure, an electronic door locking device includes:

[0022] A power module for driving an expansion block that contacts an auxiliary latch or only driving a blocking block;

[0023] A cam for receiving a doorknob shaft, the cam having a protrusion for moving a connecting rod strip; the cam further defines a groove, wherein the distal end of the auxiliary latch engages the groove, or the distal end of the blocking block engages the groove to lock the cam and the door; and,

[0024] wherein, when an electronic key is input, the auxiliary latch or the blocking block is released from the groove of the cam, allowing the cam to rotate and causing the connecting rod strip to move, which releases the bolt to open the door.

[0025] In yet another embodiment, an electronic door lock device includes: a striker assembly and a latch assembly disposed around a doorframe and a door; the striker assembly includes a power source for delivering power to a striker electrode or an energy transfer terminal; the striker electrode or the energy transfer terminal has an opening on one side of the doorframe; the latch assembly includes a latch electrode or an energy receiving terminal, a moving mechanism, and a latch bolt; wherein, after the door is closed, the power source delivers power to the striker electrode or the energy transfer terminal, the striker electrode or the energy transfer terminal supplies power to the latch electrode or the energy receiving terminal, and the latch electrode or the energy receiving terminal supplies power to the moving mechanism; a user interface or an electronic key for controlling the electronic door lock device; and wherein, after the user inputs an unlock command for the lock, the moving mechanism receives the command and drives the latch bolt to retract from the striker assembly and unlock the door.

[0026] In yet another embodiment, an electronic door lock device includes: a striker assembly and a latch assembly disposed around a doorframe and a door having an opening on one side; the striker assembly includes a power source for delivering power to Electrode 1 or an energy transfer terminal; wherein, Electrode 1 or the energy transfer terminal delivers power to Electrode 2 or an energy receiving terminal; the latch assembly includes a printed circuit board assembly (PCBA) in communication with Electrode 2 or the energy receiving terminal through a conductive medium and a moving mechanism in communication with the latch bolt; wherein, after the door is closed, the power source delivers power to Electrode 1 or the striker electrode or the energy transfer terminal, Electrode 1 or the striker electrode or the energy transfer terminal supplies power to Electrode 2 or the latch electrode or the energy receiving terminal, Electrode 2 or the latch electrode or the energy receiving terminal supplies power to the PCBA, and, the PCBA supplies power to the moving mechanism; a user interface or an electronic key for controlling the electronic door lock device; and wherein, after a command is input into the user interface or the electronic key, the PCBA receives the command and allows the moving mechanism to move, which drives the latch bolt to retract and unlock the door.

[0027] The above objects and advantages are met by the present invention. Additionally, the above objects and advantages of the present invention, as well as some other objects and advantages, will become apparent from the following description, the brief description of the drawings, the detailed description of the present invention, and the appended claims herein. These features and other features are described and illustrated in the following drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Enabling those of ordinary skill in the art to better understand how to manufacture and use the disclosed compositions and methods, reference is made to the accompanying drawings, in which:

[0029] Figure 1 is a perspective view of an electronic door locking device having a striker assembly and a lock body according to an embodiment of the present disclosure.

[0030] Figure 2 is Figure 1The device shows the internal components of the lock body of one embodiment of the present disclosure in the unlocked position.

[0031] Figure 3 Is the lock body of one embodiment of the present disclosure in the locked position using a mechanical expansion block and an electronic door locking device.

[0032] Figure 4 Is in the unlocked position using a mechanical expansion block and an electronic door locking device Figure 3 Of the lock body.

[0033] Figure 5 Is in the locked position using a mechanical expansion block and an electronic door locking device Figure 3 Of the lock body.

[0034] Figure 6 Is in the unlocked position using a mechanical expansion block and an electronic door locking device Figure 3 Of the lock body.

[0035] Figure 7 Is the lock body of one embodiment of the present disclosure using an electromagnetic power module and a blocking block, wherein the electronic door locking device is in the locked position.

[0036] Figure 8 Is Figure 7 Of the lock body, wherein the electronic door locking device is in the unlocked position.

[0037] Figure 9A And Figure 9B Are diagrams showing that the electronic door locking device unlocks and the cam moves horizontally after receiving a signal from an electronic key.

[0038] Figure 10A And Figure 10B Are further diagrams showing that the electronic door locking device unlocks and the cam moves vertically after receiving a signal from an electronic key.

[0039] Figure 11 Is an embodiment of a deadlock solution.

[0040] Figure 12A - 12D Is Figure 1 In the embodiment, wherein the bolt engages with the striker assembly.

[0041] Figure 13 Is Figure 11 An alternative embodiment of the embodiment in.

[0042] Figure 14A - 14B Is in the locked position Figure 13 A cross-sectional view of the embodiment in.

[0043] Figure 15A - 15B Is in the unlocked positionFigure 13 Cross-sectional view of an embodiment in

[0044] Figure 16 is Figure 11 Another alternative embodiment of the embodiment in

[0045] Figure 17A - 17C is in the locked position Figure 16 Cross-sectional view of an embodiment in

[0046] Figure 18A - 18C is in the unlocked position Figure 16 Cross-sectional view of an embodiment in

[0047] Figure 19 is Figure 11 Another alternative embodiment of the embodiment in

[0048] Figure 20A - 20D is in the locked position Figure 19 Cross-sectional view of an embodiment in

[0049] Figure 21A - 21C is in the unlocked position Figure 19 Cross-sectional view of an embodiment in

[0050] Figure 22A - 22B is a perspective view of an embodiment of an assembled locking device, where Figure 22A illustrates the locked position, and Figure 22B illustrates the unlocked position.

[0051] Figure 23A - 23B is a perspective view of another embodiment of an assembled locking device, where Figure 23A illustrates the locked position, and Figure 23B illustrates the unlocked position.

[0052] Figure 24 is a perspective view of an embodiment of a mobile mechanism of a wireless charging (contact or non-contact) and an assembled locking device, where Figure 24 illustrates the locked position.

[0053] Figure 25 is a perspective view of an embodiment of a mobile mechanism of a wireless charging (contact or non-contact) and an assembled locking device, where Figure 25 illustrates the unlocked position.

[0054] Figure 26 is a perspective view of an embodiment of a mobile mechanism of a wireless charging (contact or non-contact) and an assembled locking device with a conductive medium, where Figure 26 illustrates the locked position, and

[0055] Figure 27A and Figure 27BPerspective view of an embodiment of a mobile mechanism of a wireless charging (contact or non-contact) and a locking device assembled with a conductive medium, where Figure 27A and Figure 27B illustrate the unlocked position.

[0056] Reference numerals:

[0057] 1 Impact assembly, 2 Lock body, 3 - Expansion block, 4 - Electrical module (power module), 5 - Impact piece, 6 - Lock tongue, 7 - Auxiliary latch (cam locking member), 8 - Auxiliary latch spring, 9 - Positioning member, 10 - Cam, 11 - Link bar, 12 - Electromagnetic module (power module), 13 - Blocking block spring, 14 - Blocking block (cam locking member), 15 - Hole / center of the cam, 16 - Multiple protrusions, 17 - Groove in the cam, 18 - Lock tongue mechanism, 19 - Lock tongue body, 20 - Lock tongue spring, 21 - Lock tongue positioning member, 22 - Lock tongue cap, 23 - Distal end of the auxiliary latch, 24 - Distal end of the blocking block, 25 - Proximal end of the auxiliary latch, 26 - Proximal end of the blocking block, 27 - Electronic key, 28 - Solution 1 impact assembly, 29 - Solution 1 bolt, 30 - Solution 2 impact assembly, 31 - Solution 2 bolt, 32 - Solution 3 impact assembly, 33 - Solution 3 bolt, 34 - Solution 4 impact assembly, 35 - Solution 4 bolt, 36 - Opening, 37 - Mobile mechanism, 38 - Mobile mechanism with PCBA, 39 - Conductive medium, 40 - Power supply or power cable, 41 - Printed circuit board assembly (PCBA), 42 - Motor gearbox, 43 - Cam, 44 - Cam gear, 45 - Cover plate, 46 - Gear of the motor gearbox, 47 - Energy receiving end, 48 - Energy transmitting end with conductive medium, 49 - Energy receiving end with conductive medium, 50 - Energy transmitting end, 51 - Blocking plate, 52 - Blocking plate spring, 53 - Limiting plate, 54 - Auxiliary latch protrusion, 55 - Limiting plate protrusion, 56 - Telescopic rod or lock tongue rod, 57 - Impact electrode, 58 - Bolt electrode, 59 - Lock tongue sleeve, 60 - Impact module, 61 - First electrode or electrode (1), 62 - Second electrode or electrode (2), and 63 - Cam protrusion arm. Detailed description of the specific embodiment

[0058] Embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present disclosure and should not be construed as limiting the present disclosure.

[0059] In the description of the present disclosure, it should be understood that the orientations or positional relationships involved in the orientation description (such as up, down, front, back, left, right, near, and far) are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the mentioned devices or elements must have a specific orientation, be constructed and operated along a specific orientation, and thus cannot be understood as a limitation of the present disclosure.

[0060] Reference Figure 1 , an embodiment of the present disclosure is illustrated. An electronic door locking device and a lock are shown, which include a striking assembly 1 and a lock body 2. The electronic door locking device can be activated by an electronic key 27. The electronic key can include, but is not limited to, for example, fingerprint, retina scan, biometric reading, wireless token, password, user interface, etc. A doorbell can be utilized as a user interface, for example. There can also be a keypad utilized that is not attached to the door. Similarly, the system can be wireless and be controlled only by a mobile phone, a tablet computer, or other personal device assistants.

[0061] The striking plate assembly 1 includes a striking plate having an opening and a power module. Depending on the embodiment, the power module can be an electrical module or an electromagnetic module as discussed herein. The lock body 2 includes a latch 6 and can also include an auxiliary latch. The latch engages with the opening 36 in the striking plate to lock the door. The proximal portion 25 of the auxiliary latch can also help maintain the door locked. As Figure 1 shown in and the drawings, all electronic components, power devices, and / or wiring are positioned through the door frame on the striking plate side of the door frame to achieve the advantages discussed previously.

[0062] Figure 2 The lock body 2 is illustrated without its top cover to illustrate the internal mechanical components. Figure 2 An embodiment of the present disclosure is also illustrated. An electrical module 4 and an expansion block 3 are shown in the striking assembly 2. The module 4 can include, but is not limited to, an electric motor, an electromagnet, a damping delay, an electromechanical piston, etc. The module 4 includes the expansion block 3, which linearly moves back and forth when the module 4 is activated and deactivated by the electronic key 27. The striking assembly further includes a striking plate 5 having an opening to receive the latch 6 and the proximal end 25 of the auxiliary latch 7.

[0063] Depending on the embodiment, the lock body 2 can further include an auxiliary latch 7 having a proximal end 25 and a distal end 23. The auxiliary latch 7 can further include an auxiliary latch spring 8 fastened in place by a positioning member 9. The positioning member 9 provides resistance to the spring 8 such that the expanded spring 8 retracts the distal portion 23 away from the cam 10 to allow the cam to rotate. When the expansion block 3 retracts in the electrical module 4, the spring 8 expands.

[0064] As Figure 3As shown in the figure, when the expansion block 3 expands, the spring 8 is compressed against the positioning member 9, and the distal portion 23 of the auxiliary latch engages with the cam 10 to prevent the cam from rotating and thus prevent the cam from locking the door. The link bar 11 communicates with the cam 10 to lock the locking tongue 6 in the opening of the striker plate 5, keeping the door locked.

[0065] The locking tongue 6 is part of the locking tongue body 19. A locking tongue spring 20 is provided on the locking tongue body. The locking tongue positioning member 21 provides resistance to the spring 20. When the spring 20 expands, the locking tongue 6 engages in the opening 36 of the striker plate 5, and the door is locked. When the spring 5 is compressed, the locking tongue retracts, and the door is allowed to open.

[0066] Depending on the embodiment, the locking tongue body may also have a locking tongue cap 22. The locking cap 22 and the locking tongue positioning member 21 provide resistance to the link 11 that may be disposed therebetween and allow the link 11 to move the locking tongue 6.

[0067] mentioned Figure 4 , an embodiment of the operation of a locking device using the electrical module 4 and the expansion block 3 is shown. As shown, the spring 8 forces the auxiliary latch to push the expansion block 7 into the electrical module 4. The movement of the expansion block for opening the door is triggered by the electrical key 27. After activation, the distal portion 23 of the auxiliary latch retracts from the groove 17 of the cam 10. Depending on the implementation, the cam 10 may have a plurality of protrusions 16 that rotate as the drive link bar 11 of the cam rotates in a circular path. The cam 10 may also include a hole 15 at the center of the cam to receive the door handle shaft, which will rotate the cam when the cam is unlocked as Figure 4 shown in the figure.

[0068] In Figure 4 , the locking tongue mechanism 18 is further illustrated. The locking tongue mechanism 18 includes the locking tongue 6, the spring 20, the positioning member 21, and the locking tongue cap 22. When the cam 10 rotates freely, since the distal portion 23 retracts from the groove 17, the rotation of the cam drives the link bar 11, and the link bar 11 retracts the locking tongue 6. The spring 20 holds the locking tongue in the hole of the striker plate until the cam rotates such that the rotational force of the cam overcomes the strength of the spring to retract the locking tongue and open the door. Once the cam stops rotating and the force is released from the door handle shaft, the spring 20 moves the locking tongue back into the hole of the striker plate.

[0069] Figure 5Illustrate the locking or closing features of the electrical module and the expansion block embodiments. After the door is closed, the expansion block extends. The auxiliary latch compresses the auxiliary latch spring. The auxiliary latch may have a bent portion such that the bent portion contacts the auxiliary latch spring at one end, and the other end of the auxiliary spring contacts the positioning member. The distal end of the auxiliary latch extends into the groove of the cam, locking the cam. The locked cam prevents the cam from rotating and maintains the locked door in the closed position.

[0070] Figure 6 Further illustrate the unlocking principle of the electrical module and the auxiliary latch mechanical system. After the electronic key is inserted, the electrical module drives the expansion block to retract. The auxiliary latch spring extends the auxiliary latch fully again. The distal end of the auxiliary latch separates from the groove of the cam. The cam can rotate freely, which drives the link bar to move. The link bar drives the bolt to retract again, allowing the door to be opened and unlocked.

[0071] Figure 7 Illustrate another embodiment using the electromagnetic module 12 and the blocking block 14. Depending on the implementation, the blocking block may have a spring 13 disposed on the blocking block and contacting the positioning member 9. The extension of the spring 13 drives the distal portion 24 of the blocking block to engage with the groove of the cam 10, locking the cam and not allowing the cam to rotate, thus locking the door. After the door is closed, the distal end 24 of the blocking block extends into the groove of the cam, locking the cam and maintaining the locked door in the closed position.

[0072] Figure 8 Illustrate Figure 7 the unlocking of the locking device in the embodiment shown. After the electronic key is inserted, the electromagnetic module generates a magnetic field, and the proximal end 26 of the blocking block is pulled towards the electromagnetic module 12. The distal end 24 disengages from the groove of the cam. When the door handle shaft rotates, this disengagement allows the cam to rotate freely. The rotation of the cam drives the link bar to move, and the link bar then drives the bolt to retract from the opening of the striker plate to unlock the door.

[0073] Figure 9A and Figure 9BThe illustrated electronic door locking device unlocks and the cam moves horizontally after receiving a signal from an electronic key. Depending on the embodiment, the cam can move in any direction and in any manner. After receiving a signal (such as but not limited to fingerprint, password, etc.) from the electronic key 27, the electric module 4 retracts the expansion block 3, and the auxiliary latch spring 8 fully extends. The auxiliary latch protrusion 54 separates from the blocking plate 51, and the blocking plate spring 52 causes the blocking plate 51 to separate from the groove of the cam. The limiting plate 53 is used to guide the limiting plate protrusion 55, which is part of the blocking plate 51, into the groove of the cam. The limiting plate also provides resistance to the blocking plate spring and limits the travel of the limiting plate protrusion into the groove of the cam. The cam can move horizontally or in any direction depending on the embodiment by the action of the door handle, and push the connecting rod 11, forcing the connecting rod to pull the latch 6 into the locking device to unlock the door.

[0074] Figure 10A and Figure 10B The illustrated electronic door locking device unlocks after receiving a signal from the electronic key 27. The electric module 4 or the electromagnetic module 12 retracts the expansion block, and the auxiliary latch spring fully extends the auxiliary latch. The auxiliary latch separates from the groove of the cam. The cam can move vertically by the action from the door handle and push the connecting rod. The connecting rod then pulls the latch into the lock to unlock the door.

[0075] Figure 11 is an embodiment of the bolt lock solution. In Figure 11 the disassembly view of the solution 1 impact assembly 28 and the solution 1 bolt 29 is shown. An opening 36 is provided in the impact assembly 28 having the striker.

[0076] Figure 12A - 12D illustrated Figure 11 the cross-sectional view of the bolt lock shown in. Figures 12A and 12B are magnifications of the cross-sections in Figures 12C and 12D respectively. Figure 12A - 12D The solution 1 impact assembly 28 and the bolt 29 in contain the latch 6, the striker 5, the electromagnetic module 14, the positioning member 9, the blocking block spring 13, the blocking block 14, and the cam 10. For the locked position, after the door is closed, the tail end of the blocking block extends into the groove of the cam to prevent the cam from moving and maintain the closed lock. To unlock the bolt, after inputting an electronic key (such as fingerprint, password, etc.), the electromagnetic module generates a magnetic force to move the blocking block to separate from the groove of the cam. The cam then moves freely. The user can move the cam by the door handle, and the cam drives the latch to retract, and then the door is unlocked.

[0077] Figure 13 illustrates solution 2 or with Figure 11Embodiments different from the embodiments shown. The striker assembly 30 of Solution 2 and the latch 31 of Solution 2 are shown. An opening 36 is provided in the striker assembly 30 having a striker.

[0078] Figure 14A - 14B Illustration Figure 13 The locking position of the embodiment shown in. Figure 14A is an enlarged view of the cross-section in Figure 14B. A cross-sectional view of the striker assembly 30 and the latch 31 is shown, which includes an electrical module 4, a locking tongue 6, an expansion block 3, a telescopic rod 56, a striker 5, and a cam 10. To lock the system shown, after moving the door handle, the handle moves the cam, and then the cam moves the locking tongue to extend and lock the door.

[0079] Figure 15A - 15B Illustration Figure 13 The unlocking position of the embodiment shown in Solution 2. Figure 15A is an enlarged view of the cross-section in Figure 15B. After entering the electronic key as previously described, the electrical module drives the expansion block to extend, and the expansion block drives the telescopic rod to move, and the telescopic rod drives the cam to move. The cam drives the locking tongue to retract, and then the door is unlocked.

[0080] Figure 16 Illustration of Solution 3 or an embodiment different from Figure 11 Embodiments different from the embodiments shown. The striker assembly 32 of Solution 3 and the latch 33 of Solution 3 are shown. The striker assembly 32 has an opening 36 for receiving the locking tongue 6. The locking tongue 6 is moved by a moving mechanism 37 further described herein.

[0081] Figure 17A - 17C Illustration Figure 16 The locking position of the embodiment shown in. Figures 17 and 17C are enlarged views of the cross-section of Figure 17B. A cross-sectional view of the striker assembly 32 and the latch 33 is shown in Figure 17B, which includes a power supply cable 40, the striker assembly 32, a striker module 60, a locking tongue 6, a latch electrode 58, a locking tongue sleeve 59, a printed circuit board assembly (PCBA) 41 that may or may not be in the moving mechanism, a motor gearbox 42, a cam 43, a cam gear 44, a cover plate 45, and a gear 46 of the motor gearbox. To lock the system shown, after the door is closed, the power supply cable delivers power to the striker electrode 57. The striker electrode 57 can be the striker itself, or the striker electrode 57 can have an electrode incorporated into the striker. The striker electrode supplies power to the latch electrode 58. The latch electrode then supplies power to the PCBA 41. The PCBA supplies power to the motor gearbox 42.

[0082] In the locking of the above system in Solution 3, after the lock closing command is input into the user interface (which includes but is not limited to mobile devices, keypads, biometric interfaces, and any combination thereof), the PCBA receives information and allows the motor gearbox gear to drive the cam gear to move. The cam gear rotates and drives the latch rod to move. The latch rod drives the latch to extend, and then the door is locked.

[0083] Figure 18A - 18C Illustration Figure 16 The unlocking position of the embodiment shown in Solution 3. FIGS. 18A and 18C are enlarged views of the cross-section in FIG. 18B. After the unlocking command or the electronic key as previously described is input, the PCBA receives information and allows the motor gearbox gear to drive the gear of the cam to move. The cam gear drives the latch rod to move, and the latch rod drives the latch to retract, and then the door is unlocked.

[0084] Figure 19 Illustration of Solution 4 or an embodiment different from Figure 11 the embodiment shown therein. The impact assembly 34 of Solution 4 and the bolt 35 of Solution 4 are shown, which have a moving mechanism 38 further described herein.

[0085] Figure 20A - 20D Illustration Figure 19 The locking position of the embodiment shown therein. FIGS. 20B, 20C, and 20D are enlarged views of the cross-section in FIG. 20A. A cross-sectional view of the impact assembly 34 and the bolt 35 is shown, which includes an electrode (1) or a first electrode 61 and an electrode (2) or a second electrode 62, a power supply cable 40, the impact assembly 34, the latch 6, a cable or a conductive medium 39, where the conductive medium can be any means of conducting electric power, including but not limited to wireless, radio frequency, conductive materials, etc., the PCBA 41, the motor gearbox 42, the cam 43, the cam gear 44, the cover plate 45, the latch sleeve 59, and the gear 46 of the motor gearbox. After the door is closed, the power supply cable delivers electric power to electrode 1, and electrode 1 supplies electric power to electrode 2. Electrode 2 supplies electric power to the PCBA through the cable or the conductive medium 39. The conductive medium includes but is not limited to electrical cables, wires, conductive materials, etc. The PCBA has a capacitor that can store electric power for the motor to move the motor gearbox, and then the bolt lock can be locked and unlocked. To lock the system shown, after the lock closing command or the electronic key is given, the PCBA receives information and allows the gear of the motor gearbox to drive the cam gear to move. The cam gear drives the cam to move, and the cam drives the latch to extend and lock the door.

[0086] Figure 21A - 21C Illustration Figure 19The unlocking position of the embodiment shown in Solution 4. FIGS. 21A and 21C are enlarged views of the cross-section in FIG. 21B. After an unlocking command is given or an electronic key is used, the PCBA 41 receives information and allows the gear 46 of the motor gearbox to reverse-drive the cam gear 44 and move the cam gear 44 in the reverse direction. The cam gear drives the cam to move, and drives the latch 6 to retract, and then the door is unlocked. Depending on the embodiment, when the cam moves, the cam projection arm moves, which causes the latch rod 56 to move, and the latch rod 56 causes the latch 6 to move.

[0087] Figure 22A - 22B is a perspective view of an embodiment of an assembled locking device, where Figure 22A illustrates the locked position, and Figure 22B illustrates the unlocked position. In Figure 22A - 22B the movement mechanism 37 is illustrated. Depending on the implementation, the movement mechanism 37 may include one or more of the following components: the conductive medium 39, the PCBA 41, the motor gearbox 42, the cam 43, the cam gear 44, and the cover plate 45. Such embodiments are shown in, for example but not limited to Figure 16 , Figure 17A - 17C and Figure 18A - 18C .

[0088] Figure 23A - 23B is a perspective view of another embodiment of an assembled locking device, where Figure 23A illustrates the locked position, and Figure 23B illustrates the unlocked position. In Figure 22A - 22B the movement mechanism 37 is illustrated. Depending on the implementation, the movement mechanism 38 may include one or more of the following components: the PCBA 41, the motor gearbox 42, the cam 43, the cam gear 44, and the cover plate 45, as well as the conductive medium 39, the impact electrode 60, and the bolt electrode 58 connected to the PCBA 41. Such embodiments are shown in, for example but not limited to Figure 16 , Figure 17A - 17C and Figure 18A - 18C , Figure 19 , FIGS. 20A-20C and Figure 21A - 21C .

[0089] Figure 24 - 27B All use the inventive subject matter previously described herein, adding the use of wireless charging to lock and unlock the door. Depending on the embodiment, the wireless charging may be contact-based or non-contact-based. The power supply may be house AC or DC, such as a battery. Depending on the embodiment, an external power supply may not be required, and when the electrical storage capacity is low, the lock device wirelessly charges the electrical storage capacity. In addition, there may be a user interface that allows the user to determine when the electrical storage capacity is low. The interface includes but is not limited to a mobile phone application, an electrical display on the locking device, and any combination thereof.

[0090] Wireless charging uses electromagnetic induction (also known as inductive coupling) to transfer energy between two objects, such as a charger and a smartphone. The charging base has a transmitter coil that emits a signal, and the signal searches for a receiver coil, such as one in a compatible smartphone. When the signal senses the receiver coil, the electrons in the transmitter coil start to flow everywhere. The transmitter coil emits an alternating magnetic field, which induces an alternating voltage / current in the receiver coil inside the device. Wireless charging can be done either with contact or without contact. Having contact means that the transmitting end and the receiving end have physical contact. Without contact means that the transmitting end and the receiving end are not in physical contact and the energy is transmitted wirelessly through radio frequency, microwave, electromagnetic force, and other wireless energy transmission forms or a combination thereof, etc.

[0091] In the present embodiment as shown in Figure 24 a perspective view of an embodiment of a moving mechanism of a wireless charging (contact wireless charging or non-contact wireless charging) and an assembled locking device is shown in the locked position. In the locked position, the latch of the locking body 19 is shown to enter the impact assembly 1. The power from the power supply cable 40 transfers electrical power to the energy transfer end 50. The energy transfer end 50 then transfers energy by contacting or non-contacting with the energy receiving end 47. The energy receiving end 47 sends power to the moving mechanism 37 to lock and unlock or move the latch and the locking body. In addition, depending on the embodiment, the wireless charging may include a power source for delivering power to the impact electrode or the energy transfer end 50 for the impact assembly. The impact electrode or the energy transfer end may then have an opening on one side of the door frame for the latch to move therein. The bolt assembly may further include a bolt electrode or an energy receiving end 47, a moving mechanism, and a latch. After the door is closed, the power supply delivers power to the impact electrode or the energy transfer end, the impact electrode or the energy transfer end powers the bolt electrode or the energy receiving end, and the bolt electrode or the energy receiving end supplies power to the moving mechanism to lock and unlock the door.

[0092] Figure 25 is a perspective view of an embodiment of a moving mechanism of an assembled locking device with wireless charging (contact or non-contact) and Figure 24 but in the unlocked position. The power is again transferred by contacting or non-contacting (such as but not limited to radio frequency, microwave, electromagnetic force, etc.) between the energy transfer end and the energy receiving end. Alternatively, the locking device can be charged directly with contact or without contact without a power supply cable, where the power is stored in the locking device itself.

[0093] Figure 26 is again a perspective view of wireless charging (contact or non-contact wireless charging as previously described), but with a moving mechanism 38 that has a PCBA 41 and a conductive medium 39.Figure 26 This embodiment of the assembled locking device in

[0094] In this embodiment as shown in Figure 26 - 27B , an embodiment of the wireless charging (contact wireless charging or non-contact wireless charging) and the moving mechanism of the assembled locking device is shown in the locked position. In the locked position, the locking tongue of the locking body 19 is shown to enter the impact assembly 1. The power from the power supply cable 40 transfers the electric power to the energy transfer end 48. The energy transfer end 48 then transfers the energy by contacting or non-contacting with the energy receiving end 49. Depending on the implementation, there may or may not be a conductive medium connected to the moving mechanism to transfer power to the moving mechanism.

[0095] The energy receiving end 49 sends the power to the moving mechanism 38 having the PCBA 41 to lock, unlock or move the locking tongue and the locking body. In addition, depending on the embodiment, the wireless charging may include a power source for delivering power to the impact electrode or the energy transfer end 48 for the impact assembly. The impact electrode or the energy transfer end 48 may then have an opening on one side of the door frame for the locking tongue to move therein. The bolt assembly may further include a bolt electrode or an energy receiving end 49, a moving mechanism 38, and a locking tongue. After the door is closed, the power supply delivers power to the impact electrode or the energy transfer end, the impact electrode or the energy transfer end powers the bolt electrode or the energy receiving end, and the bolt electrode or the energy receiving end supplies power to the moving mechanism to lock and unlock the door.

[0096] Figure 27A and Figure 27B are perspective views of an embodiment of the moving mechanism of the assembled locking device in wireless charging (contact or non-contact) and Figure 26 where Figure 27A and Figure 27B illustrate the unlocked position. As shown in Figure 26 , Figure 27A - 27B , the energy transfer end 48 sends the power to the energy receiving end 49. This can be done with or without contact of the corresponding ends as previously described in Figure 24 - 25 . Similar to Figure 24 - 25 , the lock device itself can be wirelessly charged with or without contact by having an internal power storage (not shown) or stored in a capacitor in the PCBA 41, etc.

[0097] The embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the embodiments mentioned above. Those skilled in the art can also make various changes without departing from the purpose of the present disclosure within the scope of knowledge they possess.

[0098] Although the present invention has been described in the foregoing specification with respect to certain embodiments thereof and many details have been set forth for purposes of illustration, it will be apparent to those skilled in the art that the present invention is susceptible to additional embodiments and that certain of the details described herein can be materially varied without departing from the basic principles of the invention.

[0099] The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and accordingly, reference should be had to the appended claims, rather than the foregoing specification, when indicating the scope of the present invention.

[0100] Although the present invention has been described herein with reference to embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the invention. Accordingly, it is to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be designed without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An electronic door lock device, comprising: An impact assembly and a lock body; The impact assembly includes a power module that functions as an electrical module or an electromagnetic power module during operation; The lock body includes: A cam that is movable; a central defining hole of the cam, through which a door handle shaft enters; The cam further defines a groove; A cam locking member disposed between the power module and the cam for engaging with the groove in the cam; A connecting rod strip that contacts the cam, wherein the movement of the connecting rod strip is controlled by the movement of the cam; A latch mechanism that is controlled by the movement of the connecting rod strip, the latch mechanism including a latch body having a latch and a latch spring disposed on the body; the latch body contacts the connecting rod strip; and the latch can retract and extend into a door frame impact plate of the impact assembly; Wherein, when the door in the door frame is closed, the latch extends into the door frame impact plate, and the cam locking member moves towards the cam and engages the groove to lock the cam and prevent the cam from moving and maintain the door locked.

2. The device according to claim 1, wherein The cam locking member further includes a proximal end facing the power module and a distal end facing the cam; and wherein the distal end engages into the groove of the cam; and further includes an electronic key for controlling the power module; wherein, when the electronic key is input, the power module causes the distal end of the cam locking member to separate from the groove of the cam, thereby allowing the cam to move; and wherein the movement of the cam through the door handle shaft drives the connecting rod strip to move, and wherein the connecting rod strip drives the latch to retract from the impact plate to unlock the door; and wherein the cam locking member is an auxiliary latch or a blocking block; wherein the cam can rotate around the center of the cam; the central defining hole of the cam, through which a door handle shaft enters; and when the cam rotates, a plurality of protrusions move in a circular directional path, and wherein the cam can move horizontally or vertically.

3. The apparatus according to claim 2, further comprising an electronic key for controlling the power module; wherein, When the electronic key is input, the power module causes the distal end of the cam locking member to separate from the groove of the cam, thereby allowing the cam to move; and wherein the movement of the cam through the door handle shaft drives the connecting rod strip to move, and wherein the connecting rod strip drives the latch to retract from the impact plate to unlock the door; and wherein the cam locking member is an auxiliary latch or a blocking block.

4. The device according to claim 3, wherein, The power module is an electrical module for the auxiliary latch or an electromagnetic module for the blocking block; and wherein the electrical module further includes a block controlled by the electrical module; the block can move relative to the power module in a linear distal direction and a linear proximal direction.

5. The device according to claim 4, wherein The block is an expansion block disposed inside the electrical module and in contact with the proximal end of the auxiliary latch; wherein, when the door is closed, the expansion block extends so as to move the auxiliary latch to engage the distal end of the auxiliary latch into the groove of the cam so as to lock the cam and prevent the cam from moving and maintain the door locked; and wherein, after the electronic key is input, the expansion block retracts into the electrical module, and the distal end of the auxiliary latch disengages from the groove of the cam, thereby allowing the cam to move and driving the link bar to retract the bolt from the striker plate, thereby allowing the door to open.

6. The device according to claim 4, wherein The blocking block is disposed outside the electromagnetic module; wherein, when the door is closed, the distal end of the blocking block extends into the groove of the cam so as to lock the cam and prevent the cam from moving and maintain the door locked; and wherein, after the electronic key is input, the electromagnetic module generates a magnetic field to move the proximal end of the blocking block closer to the electromagnetic module, and the distal end of the blocking block disengages from the groove of the cam, thereby allowing the cam to rotate and driving the link bar to retract the bolt from the striker plate, thereby allowing the door to open.

7. The apparatus according to claim 1, wherein, The bolt mechanism further includes a bolt spring, a bolt positioning plate, and a bolt cap; wherein, the bolt spring is in contact with the bolt positioning plate, and the link bar is positioned between the bolt positioning plate and the bolt cap for controlled movement of the bolt.

8. The device according to claim 1, wherein The cam locking member further includes a spring and a positioning member, wherein, when the cam locking member is the auxiliary latch, the spring is positioned closer to the power module, and when the spring extends, the cam is allowed to move; and wherein, when the cam locking member is the blocking block, the spring is positioned closer to the cam, and when the spring extends, the cam cannot move.

9. An electronic door lock device, comprising: An electrical module or an electromagnetic module; A cam capable of moving about the center of the cam, the cam receiving the door handle shaft for entry therethrough; A cam locking member disposed between the module and the cam for engaging with the cam; A bolt mechanism controlled by the movement of the cam, and Among them, When the door in the doorframe is closed, extending the bolt into the doorframe striker plate and preventing the cam from moving and maintaining the door locked.

10. The device according to claim 9, further comprising: A plurality of protrusions, when the cam rotates, the cam moves along a directional path around the plurality of protrusions, and the plurality of protrusions move horizontally or vertically; And A link bar in contact with the plurality of protrusions, wherein, The movement of the link bar is controlled by the movement of the plurality of protrusions of the cam, and the link bar drives the bolt mechanism; Wherein, the bolt mechanism further includes a bolt body having the bolt and the bolt spring disposed on the body; the bolt body is in contact with the link bar; and the bolt can retract and extend into the doorframe striker plate; An electronic key for opening the door, wherein the cam locking member retracts from the groove of the cam, and the cam is allowed to rotate and retracts the latch from the doorframe striker plate to unlock the door; and, wherein the cam locking member is an auxiliary latch member driven by an expansion block, and the power module is an electric power module; or the cam locking member is a blocking block driven by an electromagnetic force, and the power module is an electromagnetic power module.

11. An electronic door lock device, comprising: A power module for driving an expansion block in contact with an auxiliary latch or only driving a blocking block; A cam for receiving a door handle shaft, the cam further defining a groove, wherein, The distal end of the auxiliary latch engages the groove, or the distal end of the blocking block engages the groove to lock the cam and the door; and, wherein, when the electronic key is input, the auxiliary latch or the blocking block is released from the groove of the cam, allowing the cam to rotate, move horizontally or vertically and release the latch to open the door.

12. The device according to claim 11, further comprising a connecting bar, wherein, When the cam is allowed to rotate, the cam moves the link bar, which releases the latch to open the door; and wherein the cam further includes a protrusion, and when the cam rotates, the protrusion drives the link bar.

13. An electronic door lock device, comprising: An impact assembly and a latch assembly; The impact assembly includes a power source for activating an electrical or electromagnetic module during operation; And A doorframe striker plate; The latch assembly includes: A cam capable of moving; a central defining hole in the cam for the door handle shaft of the door handle to pass through; the cam further defines a groove; A cam locking member disposed between the electrical module or the electromagnetic module and the cam for engaging with the groove in the cam; A latch mechanism controlled by the movement of the cam, the latch mechanism including a latch body capable of retracting and extending; wherein, when the door in the doorframe is closed, the latch extends into the doorframe striker plate, and the cam locking member moves towards the cam and engages the groove to lock the cam and unlock the door.

14. The electronic door lock device according to claim 13, wherein, The striker plate defines an opening on the side of the doorframe, and wherein the latch body engages in the opening; and the latch retracts and extends into the opening of the doorframe striker plate to lock and unlock the door; wherein the cam locking member is a blocking block that extends into the groove of the cam after the door is closed to prevent the cam from moving and maintain the door locked; and, wherein, after the electronic key is input, the electromagnetic module generates a magnetic force to move the blocking block to separate from the groove of the cam and allow the user to move the cam through the door handle or the door handle to unlock the door; and, wherein the blocking block further includes a blocking block spring disposed on the blocking block to engage the blocking block into the groove of the cam when the magnetic force is not activated.

15. The electronic door lock device according to claim 14, wherein, The electric module further includes an expansion block that engages the telescopic rod. After the door handle or the movement of the door handle, the cam causes the locking tongue to move to extend and lock the door. After inputting the electronic key or the user interface, the electric module drives the expansion block to extend, and the expansion block drives the telescopic rod to move and drives the cam to move. The cam drives the locking tongue to retract and unlock the door. And, When the electric module is activated to unlock the door, the expansion block moves towards the cam.

16. An electronic door lock device, comprising: An impact assembly and a latch assembly, which are arranged around the door frame and the door; The impact assembly includes a power source for delivering power to the impact electrode or the energy transfer end. The impact electrode or the energy transfer end has an opening on one side of the door frame; The latch assembly includes a latch electrode or an energy receiving end, a moving mechanism, and a locking tongue; Among them, After the door is closed, the power source delivers power to the impact electrode or the energy transfer end, the impact electrode or the energy transfer end supplies power to the latch electrode or the energy receiving end, and the latch electrode or the energy receiving end supplies power to the moving mechanism; A user interface or an electronic key, which is used to control the electronic door lock device; And, After the user inputs a lock closing command, the moving mechanism receives the command and drives the locking tongue to extend into the opening and lock the door.

17. The electronic door lock device according to claim 16, wherein, The wireless charging device includes the energy transfer end and the energy receiving end; And the wireless charging device is contact wireless charging or non-contact wireless charging; The moving mechanism is a printed circuit board assembly (PCBA), a cam, a cam gear, a motor gearbox, or any combination thereof that are interconnected. The cam gear drives the locking tongue to extend into the opening and lock the door; After the door is closed, the power source delivers power to the impact electrode, the impact electrode supplies power to the latch electrode, the latch electrode supplies power to the PCBA, and the PCBA supplies power to the motor gearbox; And, The PCBA receives the lock closing command and allows the motor gearbox to drive the cam gear to move. The cam gear drives the locking tongue to lock the door.

18. An electronic door lock device, comprising: An impact assembly and a latch assembly, which are arranged around the door frame and the door; The impact assembly includes a power source for delivering power to the impact electrode or the energy transfer end. The impact electrode or the energy transfer end has an opening on one side of the door frame; The latch assembly includes a latch electrode or an energy receiving end, a moving mechanism, and a locking tongue; Among them, After the door is closed, the power source delivers power to the impact electrode or the energy transfer end, the impact electrode or the energy transfer end supplies power to the latch electrode or the energy receiving end, and the latch electrode or the energy receiving end supplies power to the moving mechanism; A user interface or an electronic key for controlling the electronic door lock device; and, wherein, after the user inputs a lock unlocking command, the moving mechanism receives the command and drives the latch bolt to retract from the impact component and unlock the door.

19. The electronic door lock device according to claim 18, wherein, The wireless charging device includes the energy transmission end and the energy receiving end; and, the wireless charging device is contact wireless charging or non-contact wireless charging.

20. An electronic door lock device, comprising: An impact component and a latch assembly disposed around a door frame and a door having an opening on one side; The impact assembly includes a power source for delivering electricity to electrode 1 or an energy delivery end; wherein, The electrode 1 or the energy transmission end delivers power to the electrode 2 or the energy receiving end; The latch assembly includes a printed circuit board assembly (PCBA) communicating with the electrode 2 or the energy receiving end through a conductive medium and a moving mechanism communicating with the latch bolt; wherein, after the door is closed, the power supply delivers power to the electrode 1 or the impact electrode or the energy transmission end, the electrode 1 or the impact electrode or the energy transmission end supplies power to the electrode 2 or the latch electrode or the energy receiving end, the electrode 2 or the latch electrode or the energy receiving end supplies power to the PCBA, and, the PCBA supplies power to the moving mechanism; A user interface or an electronic key for controlling the electronic door lock device; and, wherein, after a command is input into the user interface or the electronic key, the PCBA receives the command and allows the moving mechanism to move, which drives the latch bolt to retract and unlock the door.

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