Smart lock mechanism

Abstract

This disclosure is directed to lock mechanism having a structural assembly, a latch, a ratchet, a driving assembly and a multifunctional lever. The structural assembly is provided with a first shaft, a second shaft and a third shaft. The latch is pivoted on the first shaft and preset at an unlock position by a first reset element, and the latch can be rotated to a locked position and a semi-locked position between the unlock position and the locked position. The ratchet is pivoted on the second shaft and preset at a locked position by a second reset element to hold the latch at the semi-locked position or the locked position, rotatable for releasing the latch. The driving assembly has a motor, a t bilateral pushing lever and an unlocking lever group, and the bilateral pushing lever is pivoted on the third shaft. The multifunctional actuator is connected to the unlocking lever group, and the multifunctional actuator has a ratchet actuating portion, an ice-breaking actuating portion and an unlocking portion. The motor rotates the bilateral pushing lever along an unlocking direction to drive the unlocking lever group, to rotate the multifunctional actuator, the ratchet actuating portion pushes the ratchet to unlock the latch, and simultaneously rotates the ice-breaking actuating part and the unlocking part.

Description

[Technical Field]

[0001] This disclosure relates to automotive door locks, and in particular to a smart door lock mechanism that performs multiple functions with a single motor. [Previous Technology]

[0002] A typical car door lock is installed on the door frame of the car to lock the door pivotally mounted on the door frame. The car door lock has a rotatable strike plate and a lock plate. After the lock hook on the door is inserted into the lock groove on the strike plate, rotating the strike plate causes the lock groove to deflect, preventing the lock hook from retracting in the insertion direction. The lock plate engages with the strike plate, thus locking the strike plate and completing the locking process. To unlock, the lock plate is removed from the strike plate, allowing the strike plate to rotate and allowing the lock hook to exit the lock groove.

[0003] Traditional car door locks only require unlocking, so only a relay is needed for the corresponding lock plate, and a cable is used to operate the relay to drive the lock plate. Modern car door locks, in order to accommodate functions such as automatic locking and electric unlocking, must have separate motors and control circuits to perform various functions. Moreover, generally speaking, each function requires a separate motor to execute. Therefore, multi-functional electric vehicle door locks are bulky and expensive to manufacture.

[0004] In view of the above, the inventors have devoted themselves to researching and applying theoretical principles to solve the above-mentioned problems in the prior art, which is the goal of the inventors' improvement. [Summary of the Invention]

[0005] This disclosure provides a smart door lock mechanism that performs multiple functions with a single motor.

[0006] This disclosure provides a smart door lock mechanism, which includes a structure, a strike plate, a lock plate, a drive assembly, and a multi-functional relay. The structure is provided with a first shaft, a second shaft, and a third shaft. The strike plate is pivotally mounted on the first shaft and preset to an unlock position with a first reset element, and the strike plate can be rotated to a fully locked position and a half-locked position between the unlocked and fully locked positions. The lock plate is pivotally mounted on the second shaft and preset to a locked position with a second reset element to hook the strike plate in the half-locked or fully locked position, and can be rotated to release the strike plate. The drive assembly includes a motor, a bidirectional push rod, and an unlocking linkage assembly, with the bidirectional push rod pivotally mounted on the third shaft. The multi-functional relay is connected to the unlocking linkage assembly, and the multi-functional relay includes a lock plate relay part, an ice-breaking relay part, and an unlocking part. The motor drives the bidirectional push rod to rotate in one unlocking direction, which in turn drives the unlocking linkage group. The unlocking linkage group causes the multi-functional relay to rotate, and the locking plate relay pushes the locking plate to unlock the buckle. The ice-breaking relay and the unlocking part rotate simultaneously.

[0007] In one embodiment of this disclosure, the smart door lock mechanism further includes an ice-breaking relay, which is pivotally mounted on the second shaft and connected to the snap plate. When the lock plate relay pushes the lock plate but does not unlock the snap plate, the motor drives the bidirectional push rod to rotate continuously in the unlocking direction to drive the unlocking linkage group to push the ice-breaking relay of the multi-functional relay. The ice-breaking relay drives the ice-breaking relay to unlock the snap plate.

[0008] In one embodiment of this disclosure, the drive assembly further includes a locking linkage group, which includes a locking relay, a hook, and a guide arm. The buckle includes a driven hook. The motor drives the bidirectional push rod to rotate along a locking direction, thereby driving the locking relay. The guide arm guides the hook to move and drives the driven hook to lock the buckle.

[0009] In one embodiment of this disclosure, the hook includes a guide post, the guide arm includes a guide rail, and the guide post is disposed on the guide rail.

[0010] In one embodiment of this disclosure, the smart door lock mechanism further includes a guide rail arm, which is pivotally mounted on the structure and the guide rail is mounted on the guide rail arm. When the multi-functional relay rotates, it simultaneously pushes the guide rail arm away from the buckle plate.

[0011] In one embodiment of this disclosure, when the multi-functional relay rotates, it can push the guide arm away from the buckle plate, thereby causing the movement path of the hook to disengage from the buckle plate.

[0012] In one embodiment of this disclosure, when the bidirectional push rod pushes the locking relay to rotate the buckle plate to the fully locked position, the multi-functional relay can rotate at the same time to drive the hook to disengage from the buckle plate.

[0013] In one embodiment of this disclosure, a multi-functional relay is connected to a cable, which can pull the multi-functional relay to rotate and push the locking plate away from the buckle plate.

[0014] In one embodiment of this disclosure, the locking plate relay and the ice-breaking relay are extensions of a multi-functional relay.

[0015] In one embodiment of this disclosure, the smart door lock mechanism further includes a control circuit board and an ice-breaking relay. The ice-breaking relay is pivotally mounted on a second shaft and hooks onto a snap plate, rotating in conjunction with the snap plate. A first magnetic element is provided on the ice-breaking relay, and a plurality of snap plate sensors are provided on the control circuit board corresponding to the unlocked, fully locked, and partially locked positions of the snap plate. When the snap plate is in the unlocked, fully locked, and partially locked positions, the control circuit board can detect the first magnetic element through the corresponding snap plate sensors.

[0016] In one embodiment of this disclosure, when the control circuit board detects that the buckle plate has rotated from the unlocked position to the half-locked position, the control circuit board drives the bidirectional push rod to push the locking relay, thereby rotating the buckle plate to the fully locked position.

[0017] In one embodiment of this disclosure, the multi-functional relay drives the ice-breaking relay, which in turn drives the buckle plate.

[0018] In one embodiment of this disclosure, when the bidirectional push rod drives the multi-functional relay to rotate, and the control circuit board does not detect that the buckle is in the unlock position, the bidirectional push rod continues to rotate, causing the multi-functional relay to continue rotating until it drives the buckle to push the buckle to the unlock position.

[0019] In one embodiment of this disclosure, a second magnetic element is provided on the locking plate, and a corresponding locking plate sensor is provided on the control circuit board. When the locking plate rotates and releases the buckle, the control circuit board can detect the second magnetic element through the corresponding locking plate sensor.

[0020] In one embodiment of this disclosure, when the bidirectional push rod drives the multi-functional relay to rotate until the control circuit board detects that the lock plate releases the buckle, and the control circuit board does not detect that the buckle is in the unlock position, the bidirectional push rod continues to rotate and causes the multi-functional relay to continue to rotate in the relay direction until it drives the buckle to push the buckle to the unlock position.

[0021] In one embodiment of this disclosure, a multi-functional relay is connected to a cable, which can pull the multi-functional relay to rotate and push the locking plate away from the buckle plate.

[0022] The smart door lock mechanism disclosed herein operates the strike plate and the lock plate separately by bidirectional rotation of a single motor, and the lock plate is further equipped with a multi-functional relay, thereby enabling a single motor to perform various unlocking and locking actions.

Implementation Method

[0023] In the description of this disclosure, it should be understood that the terms "front side", "rear side", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting conditions of this disclosure.

[0024] Unless otherwise defined herein, the terms "substantially" and "approximately" are used to describe and narrate small changes. When used in connection with an event or situation, the term may include the exact moment the event or situation occurred, or the point to which the event or situation occurred. For example, when used in connection with a numerical value, the term may include a range of variation less than or equal to ±10% of the numerical value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%.

[0025] The detailed description and technical content of this disclosure will be explained in conjunction with the drawings below. However, the drawings are for illustrative purposes only and are not intended to limit this disclosure.

[0026] Figure 1 is a perspective view of a smart door lock mechanism according to an embodiment of the present disclosure. Figure 2 is an exploded perspective view of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figures 1 and 2, the present disclosure provides a smart door lock mechanism, which is installed on the door frame of a car to lock the door pivotally mounted on the door frame. It includes a structure 100, a snap plate 210, a lock plate 220, a drive assembly 300, and a multi-functional relay 410. The present disclosure does not limit the form of the structure 100. The structure 100 may include multiple shells (101, 102, 103), and the snap plate 210 and the lock plate 220 are disposed in the structure 100. The structure 100 surrounds an entrance channel 100a for the lock hook on the car door to engage with the smart door lock mechanism.

[0027] Figure 3 is a perspective view of the internal structure of one side of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figures 2 and 3, the structure 100 is provided with a first shaft 110, a second shaft 120, and a third shaft 130. The first shaft 110, the second shaft 120, and the third shaft 130 are disposed on one side of one of the housings 101, the snap plate 210 is pivotally mounted on the first shaft 110, and the lock plate 220 is pivotally mounted on the second shaft 120. The housings (101, 102, 103) are assembled to house the first shaft 110, the second shaft 120, and the third shaft 130 within the structure 100.

[0028] Figure 4 is a three-dimensional exploded view of the internal structure of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figures 3 and 4, the snap plate 210 is pivotally mounted on the first shaft 110 and is in a preset state with a first reset element 111. In this embodiment, the first reset element 111 is a helical spring sleeved on the first shaft 110, and the first reset element 111 presses against the snap plate 210. The lock plate 220 is pivotally mounted on the second shaft 120 and is in a preset state with a second reset element 121. In this embodiment, the second reset element 121 is a helical spring sleeved on the second shaft 120, and the second reset element 121 presses against the lock plate 220.

[0029] The drive assembly 300 of the smart door lock mechanism disclosed herein further includes a locking linkage group 340, which includes a locking relay 341, a hook 342, and a guide arm 343. The snap plate 210 includes a driven hook 213. The locking relay 341 is pivotally mounted on the third shaft 130, and a hook 342 is pivotally mounted on the locking relay 341 for hooking the snap plate 210. Specifically, the driven hook 213 extends from the edge of the snap plate 210 for engaging the hook 342. The locking relay 341 is in a preset state with a third reset element 131. In this embodiment, the third reset element 131 is a helical spring sleeved on the third shaft 130, and the third reset element 131 presses against the locking relay 341.

[0030] The guide arm 343 is pivotally mounted on the structure 100, and the guide arm 343 is provided with a guide rail 343a. A portion of the hook 342 is inserted into the guide rail 343a so that the hook 342 can be guided by the guide rail 343a when it moves. Specifically, the hook 342 includes a guide post 342a, which is inserted into the guide rail 343a and can slide along the guide rail 343a.

[0031] Figure 5 is a perspective view of the internal structure of the other side of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figures 3 to 5, the drive assembly 300 includes a motor 310, a bidirectional push rod 320, and an unlocking linkage assembly 330. The motor 310 can be disposed on the other side of the aforementioned housing 101. The bidirectional push rod 320 is pivotally mounted on the third shaft 130, and the motor 310 can drive the bidirectional push rod 320 to rotate bidirectionally. The bidirectional push rod 320 and the motor 310 can be poweredly connected by at least one transmission gear 311. The motor 310 and the transmission gear 311 can be disposed on two sides of the aforementioned housing 101 respectively. The unlocking linkage assembly 330 includes two links (331, 332).

[0032] The multi-functional relay 410 is connected to the unlocking linkage 330 and can be rotated by the unlocking linkage 330. Specifically, the multi-functional relay 410 is pivotally connected to the linkages (331, 332). The multi-functional relay 410 is made of bent metal sheet, and one end of one linkage 331 is pivotally connected to the third shaft 130 and the other end is pivotally connected to one end of another linkage 332. The other end of the other linkage 332 is pivotally connected to a consistent moving point 410b on the periphery of the multi-functional relay 410. The multi-functional relay 410 is pivotally mounted on the second shaft 120.

[0033] The smart door lock mechanism disclosed herein also includes a control circuit board 500. The control circuit board 500 and the motor 310 are disposed on the same side of the aforementioned housing 101, and the motor 310 is electrically connected to the control circuit board 500 so that the motor 310 can be controlled by the control circuit board 500. A retaining wall 331 is bent at one edge of the connecting rod 331 pivotally connected to the third shaft 130, and a retaining wall 341 is bent at one edge of the locking relay 341. A bidirectional push rod 320 is disposed between these two retaining walls (331a, 341a) and can rotate to either one to selectively push the locking relay 341 or the unlocking linkage 330.

[0034] Referring to Figures 3 and 4, the smart door lock mechanism disclosed herein further includes an ice-breaking relay 420. The ice-breaking relay 420 is made of bent metal sheet and is pivotally mounted on the second shaft 120 and hooked to the latch plate 210 for rotational linkage. Specifically, one end of the ice-breaking relay 420 is pivotally connected to the second shaft 120, and the other end is provided with a hooking groove 424. The latch plate 210 has a linkage hook 214, which hooks into the hooking groove 424 on the ice-breaking relay 420. The hooking groove 424 extends radially along the second shaft 120. A first magnetic element 421 is provided on the ice-breaking relay 420, and a second magnetic element 221 is provided on the lock plate 220. The control circuit board 500 can detect the operation of the first magnetic element 421 and the second magnetic element 221. Specifically, the locking plate 220 includes a relay link 222 and a locking plate body 224. Both the relay link 222 and the locking plate body 224 are pivotally mounted on the second shaft 120. The locking plate body 224 is used to engage with the buckle plate 210. One end of the relay link 222 is provided with a pin 223, which is inserted into the locking plate body 224. One end of the locking plate body 224 is pivotally connected to the second shaft 120 and the other end is engaged with the buckle plate 210. Therefore, the locking plate body 224 cannot be pushed away from the buckle plate 210 from between the locking plate body 224 and the buckle plate 210. Thus, the relay link 222 extends to the other side of the second shaft 120 to push the locking plate body 224 to rotate. The other end of the relay link 222 is provided with a second magnetic element 221, and the end edge is bent to strengthen the structure for the multi-functional relay 410 to push against. The first magnetic element 421 is located in the ice-breaking relay 420. It rotates in conjunction with the buckle plate 210 and moves along the arc path of the center of the second shaft 120, thus extending the moving distance to make the detection results more accurate.

[0035] The multi-functional relay 410 includes a locking plate relay 411, an ice-breaking relay 413, and an unlocking part 415. When the multi-functional relay 410 is rotated by the unlocking linkage 330, the locking plate relay 411 pushes the locking plate 220 to unlock the buckle plate 210, and the ice-breaking relay 413 and the unlocking part 415 rotate simultaneously.

[0036] Figure 6 is a schematic diagram of the manual unlocking operation of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figure 6, the multi-functional relay 410 has a lock plate relay portion 411 for pushing the relay link 222 of the lock plate 220. The lock plate relay portion 411 is a support arm extending from the multi-functional relay 410. Since the relay link 222 is subjected to the force of the second reset element 121, the end edge of the lock plate relay portion 411 is bent to strengthen the structural strength for pushing the relay link 222. The multi-functional relay 410 is further connected to the unlocking portion 415. The unlocking portion 415 is a support arm extending from the multi-functional relay 410. The pull cable 414 can pull the unlocking portion 415 to rotate the multi-functional relay 410 in a relay direction 401 and push the lock plate 220 away from the buckle plate 210. When the latch plate 210 is released from the locking plate 220, it rotates in a release direction 201 to return to its preset state and is in an unlocked position. That is, the rotation direction of the latch plate 210 toward the unlocked position is defined as the release direction 201. The control circuit board 500 is provided with a latch plate sensor 501 corresponding to the unlocked position of the latch plate 210. When the latch plate 210 is in the unlocked position, the control circuit board 500 can detect the first magnetic element 421 through the corresponding latch plate sensor 501. The control circuit board 500 is also provided with a locking plate sensor 504. When the locking plate 220 rotates and releases the latch plate 210, the control circuit board 500 can detect the second magnetic element 221 through the corresponding locking plate sensor 504. The edge of the snap plate 210 has a locking groove 202 for accommodating the lock hook 10 on the door. When the snap plate 210 is in the unlocked position, the locking groove 202 aligns with the entrance channel 100a to allow the lock hook 10 to enter the locking groove 202 through the entrance channel 100a. The multi-functional relay 410 has a guide rail relay part 412, which is a support arm extending from the multi-functional relay 410. When the multi-functional relay 410 rotates in the relay direction 401 to unlock, the guide rail relay part 412 pushes the guide rail arm 343 away from the snap plate 210, causing the movement path of the hook 342 to disengage from the snap plate 210.

[0037] Figure 7 is a schematic diagram of the half-locked state of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figures 6 and 7, the first shaft 110 is offset to one side of the entrance channel 100a. When the lock hook 10 moves into the lock groove 202 along the entrance channel 100a, it can further push the latch plate 210 to rotate away from the unlocked position. At this time, the rotation direction of the latch plate 210 is opposite to the release direction 201, which is defined as the latching direction 203. Referring to Figure 7, when the latch plate 210 rotates away from the unlocked position, the lock groove 202 rotates and intersects the entrance channel 100a, and the lock hook 10 is confined at the intersection of the lock groove 202 and the entrance channel 100a. The edge of the latch plate 210 has a half-locked position portion 211. When the latch plate 210 is in the half-locked position, the lock plate 220 is in a locked position of its preset state. The edge of the lock plate 220 hooks the half-locked position portion 211 of the latch plate 210 and positions the latch plate 210 in the half-locked position. Specifically, the semi-locked part 211 is oriented towards the release direction 201, thereby allowing the stop plate 210 to rotate in the release direction 201. The control circuit board 500 is equipped with plate sensors (501, 502) corresponding to the unlocked and semi-locked positions of the plate 210. When the plate 210 is in the semi-locked position, the control circuit board 500 can detect the first magnetic element 421 through the corresponding plate sensor 502.

[0038] When the lock hook 10 is moved into the lock groove 202 and pushes the buckle plate 210 to rotate to the half-lock position and is locked by the lock plate 220, the control circuit board 500 can detect the movement of the first magnetic element 421 by the buckle plate sensors (501, 502) corresponding to the half-lock position and the unlock position respectively, and start to perform the self-locking action described later.

[0039] Figures 8 to 10 are schematic diagrams of the operation of a smart door lock mechanism according to an embodiment of the present disclosure, showing its self-locking mechanism. Referring to Figure 8, the control circuit board 500 drives the bidirectional push rod 320 to rotate in a locking direction 321 via the motor 310, thereby driving the locking linkage assembly 340. The pawl 342 drives the driven hook 213 to lock the snap plate 210. Specifically, the bidirectional push rod 320 pushes the locking relay 341, which causes the pawl 342 to move along the guide rail 343a toward the driven hook 213 of the snap plate 210. Referring to Figure 9, after the pawl 342 hooks the driven hook 213, the bidirectional push rod 320 rotates in the continuing locking direction 321 to push the locking relay 341. The locking relay 341 drives the pawl 342 to continue moving along the guide rail 343a, thereby rotating the snap plate 210 from the half-locked position toward the latching direction 203. The edge of the latch plate 210 has a fully locked position 212. After the latch plate 210 disengages from the half-locked position, the locking plate 220 disengages from the half-locked position 211 and presses against the edge of the latch plate 210. The edge of the latch plate 210 and the locking plate 220 slide relative to each other, and the fully locked position 212 moves toward the locking plate 220 along the latching direction 203. Specifically, the fully locked position 212 is structured to face the release direction 201, thereby preventing the latch plate 210 from rotating toward the release direction 201. When rotated to the fully locked position, the fully locked position 212 reaches the locking plate 220, and the locking plate 220 returns to the locked position. Referring to Figure 10, the locking plate 220 engages with the fully locked position 212, positioning the latch plate 210 in the fully locked position. Therefore, the user only needs to move the lock hook 10 into the lock slot 202, and the control circuit board 500 will then continue to perform the self-locking action. A buckle sensor 503 is provided on the control circuit board 500 corresponding to the fully locked position of the buckle 210. When the buckle 210 is in the fully locked position, the control circuit board 500 can detect the first magnetic element 421 through the corresponding buckle sensor 503.

[0040] Referring again to Figure 6, as described above, when the multi-functional relay 410 rotates in the relay direction 401 to unlock, it simultaneously pushes the guide arm 343 away from the buckle plate 210, causing the hook 342 to move away from the buckle plate 210. Therefore, when an emergency occurs during the self-locking action (such as being caught by a foreign object or hand), the multi-functional relay 410 can be pulled in the relay direction 401 by the cable 414, thereby blocking the linkage between the hook 342 and the buckle plate 210, and unlocking the buckle plate 210 at the same time.

[0041] Figures 11 to 13 are schematic diagrams of the operation of the electric unlocking mechanism of a smart door lock according to an embodiment of the present disclosure. Referring to Figures 11 and 12, the bidirectional push rod 320 can rotate in an unlocking direction 322 to push the unlocking linkage 330, thereby driving the multi-functional relay 410 to rotate in the relaying direction 401 and pushing the lock plate 220 away from the snap plate 210 to unlock. When the control circuit board 500 receives the unlocking command, it starts the electric unlocking operation described later. The control circuit board 500 drives the bidirectional push rod 320 to rotate in the unlocking direction 322 to push the retaining wall 331a of the corresponding linkage 331 of the locking relay 341, thereby pushing the actuation point 410b of the multi-functional relay 410 through the pivotally connected linkage 332, thereby driving the multi-functional relay 410 to rotate in the relaying direction 401 and pushing the lock plate 220 away from the snap plate 210. Referring to Figure 13, after the buckle 210 is released, it is driven by the first reset element 111 to rotate in the release direction 201 to the unlock position.

[0042] Figure 14 is a schematic diagram of the ice-breaking operation of a smart door lock mechanism according to an embodiment of the present disclosure. Referring to Figure 14, when the bidirectional push rod 320 drives the multi-functional relay 410 to rotate in the relay direction 401 to perform an electric unlocking action, or when the control circuit board 500 detects that the lock plate 220 releases the latch plate 210 (manual unlocking), but the control circuit board 500 does not detect that the latch plate 210 is in the unlocked position, the control circuit board 500 will determine that the latch plate 210 is stuck and perform the ice-breaking action described later, that is, directly operate the latch plate 210 to unlock. Specifically, the multi-functional relay 410 has an ice-breaking relay part 413 for pushing the ice-breaking relay 420. The ice-breaking relay part 413 is a support arm extending from the multi-functional relay 410. The ice-breaking relay 420 is linked with the buckle plate 210 and is subjected to the force of the first reset element 111. Therefore, the end edge of the ice-breaking relay part 413 is bent to strengthen the structure for pushing against the ice-breaking relay 420, and a corresponding bend is formed at one edge of the ice-breaking relay 420 to form a retaining wall 422 for the ice-breaking relay part 413 to push against. The aforementioned locking plate relay part 411, guide rail relay part 412, and ice-breaking relay part 413 are arranged along the periphery of the multi-functional relay 410. When the multi-functional relay 410 rotates in the relay direction 401, it sequentially pushes the locking plate 220, the guide rail arm 343, and the ice-breaking relay 420. The control circuit board 500 controls the bidirectional push rod 320 to continue rotating in the unlocking direction 322, thereby causing the multi-functional relay 410 to continue rotating in the relay direction 401 until its ice-breaking relay part 413 pushes the ice-breaking relay 420 to rotate around the second shaft 120. When the ice-breaking relay 420 rotates, it pushes the linkage hook 214 on the buckle plate 210 through the hook groove 424, thereby driving the buckle plate 210 to rotate around the first shaft 110 in the release direction 201 to the unlock position.

[0043] The smart door lock mechanism disclosed herein operates the snap plate 210 and the lock plate 220 respectively by bidirectional rotation of a single motor 310, and the lock plate 220 is further equipped with a multi-functional relay 410, thereby enabling a single motor 310 to perform various unlocking and locking actions.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent variations that utilize the patent spirit of the present invention shall all fall within the patent scope of the present invention. [Simplified Explanation of the Diagram]

[0045] Figure 1 is a perspective view of a smart door lock mechanism according to an embodiment of the present disclosure.

[0046] Figure 2 is a three-dimensional exploded view of a smart door lock mechanism according to an embodiment of the present disclosure.

[0047] Figure 3 is a three-dimensional schematic diagram of the internal structure of one side of a smart door lock mechanism according to an embodiment of the present disclosure.

[0048] Figure 4 is a three-dimensional exploded view of the internal structure of a smart door lock mechanism according to an embodiment of the present disclosure.

[0049] Figure 5 is a perspective view of the internal structure of the other side of a smart door lock mechanism according to an embodiment of the present disclosure.

[0050] Figure 6 is a schematic diagram of the manual unlocking operation of a smart door lock mechanism according to an embodiment of the present disclosure.

[0051] Figure 7 is a schematic diagram of a smart door lock mechanism in a half-locked state according to an embodiment of the present disclosure.

[0052] Figures 8 to 10 are schematic diagrams of the self-locking operation of a smart door lock mechanism according to an embodiment of the present disclosure.

[0053] Figures 11 to 13 are schematic diagrams of the operation of the electric unlocking of a smart door lock mechanism according to an embodiment of the present disclosure.

[0054] Figure 14 is a schematic diagram of the ice-breaking operation of a smart door lock mechanism according to an embodiment of the present disclosure.

Claims

1. A smart door lock mechanism, comprising: A structure comprising a first shaft, a second shaft, and a third shaft; a latch plate pivotally mounted on the first shaft and preset in an unlocked position by a first reset element, the latch plate being rotatable to a fully locked position and a partially locked position between the unlocked and fully locked positions; a locking plate pivotally mounted on the second shaft and preset in a locked position by a second reset element to hook the latch plate in the partially locked or fully locked position, and being rotatable to release the latch plate; a drive assembly comprising a motor, a bidirectional push rod, and an unlocking linkage assembly, the bidirectional push rod being pivotally mounted on the third shaft; and a multi-functional relay connected to the unlocking linkage assembly, the multi-functional relay comprising a locking plate relay, an ice-breaking relay, and an unlocking part. The motor drives the bidirectional push rod to rotate in an unlocking direction, which in turn drives the unlocking linkage group. The unlocking linkage group causes the multi-functional relay to rotate, and the locking plate relay pushes the locking plate to unlock the buckle. The ice-breaking relay and the unlocking part rotate simultaneously.

2. The smart door lock mechanism as described in claim 1 further includes an ice-breaking relay, pivotally mounted on the second shaft and connected to the latch plate. When the latch plate relay pushes the latch plate but does not unlock the latch plate, the motor drives the bidirectional push rod to rotate continuously along the unlocking direction, thereby driving the unlocking linkage group to push the ice-breaking relay of the multi-functional relay. The ice-breaking relay drives the ice-breaking relay to unlock the latch plate.

3. The smart door lock mechanism as claimed in claim 1, wherein the drive assembly further includes a locking linkage group, the locking linkage group including a locking relay, a hook, and a guide arm, the latch plate including a driven hook, the motor driving the bidirectional push rod to rotate in a locking direction to drive the locking relay, and the guide arm guiding the hook to move to drive the driven hook to lock the latch plate.

4. The smart door lock mechanism as described in claim 3, wherein the hook includes a guide post, the guide arm includes a guide rail, and the guide post is disposed on the guide rail.

5. The smart door lock mechanism as described in claim 3, wherein the multi-functional relay pushes the guide arm away from the latch plate simultaneously when it rotates.

6. The smart door lock mechanism as claimed in claim 5, wherein when the multi-functional relay rotates, it can push the guide arm away from the buckle plate, thereby disengaging the movement path of the hook from the buckle plate.

7. The smart door lock mechanism as described in claim 5, wherein when the bidirectional push rod pushes the locking relay to rotate the strike plate toward the fully locked position, the multi-functional relay can simultaneously rotate to drive the hook to disengage from the strike plate.

8. The smart door lock mechanism as claimed in claim 7, wherein the multi-functional relay is connected to a cable that can pull the multi-functional relay to rotate and push the lock plate away from the buckle plate.

9. The smart door lock mechanism as claimed in claim 1, wherein the lock plate relay and the ice-breaking relay are extensions of the multi-functional relay.

10. The smart door lock mechanism as described in claim 3 further includes a control circuit board and an ice-breaking relay, the ice-breaking relay being pivotally mounted on the second shaft and hooked to the buckle plate and rotating in conjunction with the buckle plate, the ice-breaking relay being provided with a first magnetic element, and the control circuit board being provided with a plurality of buckle plate sensors corresponding to the unlocking position, the fully locked position and the half-locking position of the buckle plate, wherein when the buckle plate is in the unlocking position, the fully locked position and the half-locking position, the control circuit board can detect the first magnetic element by the corresponding buckle plate sensors respectively.

11. The smart door lock mechanism as claimed in claim 10, wherein when the control circuit board detects that the latch plate has rotated from the unlock position to the half-lock position, the control circuit board drives the bidirectional push rod to push the locking relay, thereby rotating the latch plate to the fully locked position.

12. The smart door lock mechanism as claimed in claim 10, wherein the multi-functional relay drives the ice-breaking relay, thereby actuating the latch plate.

13. The smart door lock mechanism as described in claim 10, wherein when the bidirectional push rod drives the multi-functional relay to rotate, and the control circuit board does not detect that the buckle is in the unlock position, the bidirectional push rod continues to rotate, causing the multi-functional relay to continue rotating until it drives the buckle to push the buckle to the unlock position.

14. The smart door lock mechanism as described in claim 10, wherein a second magnetic element is provided on the lock plate, and a corresponding lock plate sensor is provided on the control circuit board, wherein when the lock plate rotates to release the latch plate, the control circuit board can detect the second magnetic element by the corresponding lock plate sensor.

15. The smart door lock mechanism as claimed in claim 14, wherein when the bidirectional push rod drives the multi-functional relay to rotate until the control circuit board detects that the lock plate releases the latch plate, and the control circuit board does not detect that the latch plate is in the unlock position, the bidirectional push rod continues to rotate and causes the multi-functional relay to continue to rotate until it drives the latch plate to push the latch plate to the unlock position.

16. The smart door lock mechanism as claimed in claim 1, wherein the multi-functional relay is connected to a cable capable of pulling the multi-functional relay to rotate and push the lock plate away from the latch plate.

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