An intelligent door lock

Abstract

The present invention relates to an intelligent door lock, comprising a housing, wherein a lock core, a bolt assembly, a clutch gear, a paddle assembly, and a driving assembly are arranged in the housing, wherein the lock core is connected to the bolt assembly through the paddle assembly, wherein the clutch gear comprises a sleeve assembly and a rotating shaft assembly, wherein the sleeve assembly is sleeved on the outer periphery of the rotating shaft assembly, wherein the sleeve assembly and the rotating shaft assembly are connected to the driving assembly and the paddle assembly respectively; wherein the clutch gear has a connection state and a separation state, wherein when the clutch gear is in the connection state, the sleeve assembly is connected to the rotating shaft assembly, and the driving assembly is connected to the paddle assembly through transmission; wherein when the clutch gear is in the separation state, the sleeve assembly is separated from the rotating shaft assembly, and the transmission connection between the paddle assembly and the driving assembly is disconnected. The present invention has an ingenious structure, and can separate the unlocking action from the driving assembly when the driving assembly is powered off or self-locked, thereby facilitating smooth unlocking by a key or an inner door handle.

Description

Technical Field

[0001] The present invention relates to the field of smart door locks, and in particular to a smart door lock. Background Art

[0002] Currently, the fully automatic lock bodies on the market are all controlled by the electronic system to control the forward or reverse rotation of the motor. The motor uses the transmission mechanism to push out or retract the lock tongue to achieve the locked or unlocked state of the door lock. In some special circumstances, such as when the electronic control system is powered off or malfunctions and cannot work, the motor cannot rotate to push out or retract the lock tongue. At this time, the transmission mechanism is prone to self-locking. If the key is used directly to turn the mechanical lock core to retract the lock tongue to open the door, the key will not be able to open the lock, affecting the use of smart door locks, reducing the user experience, and even affecting the user's life and property safety. Summary of the invention

[0003] The object of the present invention is to provide an intelligent door lock with an ingenious structure, which can separate the unlocking action from the drive component when the drive component is powered off or self-locked, thereby facilitating smooth unlocking by a key or an inner door handle.

[0004] A smart door lock comprises a shell, wherein a lock core, a lock tongue assembly, a clutch gear, a paddle assembly, and a driving assembly are arranged in the shell, wherein the lock core is transmission-connected to the lock tongue assembly via the paddle assembly, wherein the clutch gear comprises a sleeve assembly and a rotating shaft assembly, wherein the sleeve assembly is sleeved on the outer circumference of the rotating shaft assembly, wherein the sleeve assembly and the rotating shaft assembly are respectively connected to the driving assembly and the paddle assembly; wherein the clutch gear has a connected state and a disconnected state, wherein when the clutch gear is in the connected state, the sleeve assembly is connected to the rotating shaft assembly, and the driving assembly is transmission-connected to the paddle assembly; wherein when the clutch gear is in the disconnected state, the sleeve assembly is disengaged from the rotating shaft assembly, and the transmission connection between the paddle assembly and the driving assembly is disconnected.

[0005] In the above technical solution, during normal use, the clutch gear is in a connected state, and the driving assembly can drive the paddle assembly through the clutch gear, and then drive the lock tongue assembly to extend and retract through the paddle assembly to achieve unlocking. When the key is operated, the lock core drives the lock tongue assembly to extend and retract through the paddle assembly, thereby achieving unlocking. When the driving assembly is powered off and the transmission mechanism self-locks, force is applied to the clutch gear through the lock core. When the force is greater than the threshold of the clutch gear, the clutch gear can be switched from a connected state to a separated state. At this time, the sleeve assembly is disengaged from the shaft assembly, and the transmission connection between the paddle assembly and the driving assembly is disconnected. Continue to turn the handle or key to drive the lock tongue assembly to retract to achieve unlocking. This can effectively disengage the clutch gear from the driving assembly and prevent the clutch gear from being stuck by the driving assembly. The above structure is reasonable, easy to implement, and has efficient drive. There will be no situation where the lock cannot be unlocked due to self-locking, thereby improving the safety of the lock body.

[0006] Furthermore, the lock tongue assembly includes a square tongue assembly and an oblique tongue assembly, and the paddle assembly includes a first paddle, a second paddle, and a third paddle connected in sequence, the first paddle is sleeved on the outer periphery of the lock core, and the second paddle and the third paddle are respectively transmission-connected to the square tongue assembly and the oblique tongue assembly.

[0007] In the above technical solution, the lock core is sequentially connected to the second paddle and the third paddle through the first paddle. When the lock core rotates, the first paddle drives the second paddle and the third paddle to rotate at the same time. The second paddle drives the square tongue to retract through the movable plate. At the same time, the third paddle drives the oblique tongue to retract through the connecting arm, thereby achieving simultaneous retraction of the oblique tongue and the square tongue, so that the lock core only needs to be rotated a small angle to unlock, which simplifies the unlocking operation, makes the door lock more convenient to use, and is conducive to quick unlocking in an emergency, thereby saving time and meeting the needs of quick escape.

[0008] Furthermore, the rotating shaft assembly includes a shaft body, a boss is provided on the outer periphery of the shaft body, and the third paddle is provided with a virtual groove, the boss is located in the virtual groove, the shaft body can rotate and drive the boss to rotate, when the boss moves in the virtual groove, the shaft body and the third paddle can rotate relatively independently, and when the boss abuts against the groove walls at both ends of the virtual groove, the shaft body can drive the third paddle to rotate synchronously.

[0009] In the above technical solution, the clutch gear and the third paddle are coaxial, the third paddle is provided with a virtual position groove, the boss can move in the virtual position groove, when the boss moves within the corresponding angle range of the virtual position groove, the clutch gear and the third paddle can rotate relatively independently, when the boss abuts against the groove walls at both ends of the virtual position groove, the clutch gear can drive the third paddle to rotate synchronously. In specific use, the boss abuts against the groove wall at one end of the virtual position groove in the initial state, at this time, the clutch gear can be driven to rotate by the driving component, and the clutch gear drives the lock tongue component to retract through the third paddle. After the action is completed, the driving component rotates in the opposite direction by a preset angle, so that the boss moves to the other end of the virtual position groove. When the lock is unlocked manually, the third paddle drives the lock tongue to retract. At this time, the boss rotates within the corresponding angle range of the virtual position groove, and the third paddle can rotate independently of the clutch gear, thereby avoiding driving the driving member to move, which has the effect of reducing wear and extending service life.

[0010] Furthermore, the first paddle has at least one limiting groove for limiting its maximum rotation angle, the limiting groove is coaxial with the rotation axis of the first paddle, and a limiting column is passed through the limiting groove.

[0011] In the above technical solution, the rotation angle of the first paddle can be limited by the cooperation between the limiting groove and the limiting column. When the first paddle is rotated into place, the lock can be unlocked, thereby ensuring the stability of the unlocking efficiency and being more convenient to use.

[0012] Further, the square tongue component includes a movable movable plate and a plurality of square tongues provided at one end of the movable plate. The second paddle extends outward to form a driving portion. The driving portion is provided with a cylinder, and the movable plate is provided with a driving groove. The cylinder is inserted through the driving groove.

[0013] In the above technical solution, the driving portion is connected to the movable plate through the cylinder. When the second paddle rotates, the cylinder can force the movable plate to move along the retracting direction of the square tongue through the driving groove, thereby driving the square tongue to retract. The structure is simple and easy to implement.

[0014] Further, the movable plate is provided with a guiding groove, and the second paddle is provided with a guiding post. The guiding post is coaxial with the rotation axis of the second paddle, and the guiding post is inserted through the guiding groove.

[0015] In the above technical solution, the guiding groove can guide the movable plate to ensure the stability of the movable plate during the movement process.

[0016] Further, the inclined tongue includes a main body, a connecting rod, and a first elastic member. The first elastic member is sleeved on the outer periphery of the connecting rod. One end of the connecting rod is connected to the main body, and a stopper is provided at the other end of the connecting rod. The third paddle has a connecting arm, and the connecting arm abuts against the stopper.

[0017] In the above technical solution, when the third paddle rotates, the connecting arm can abut against the stopper and apply a force to the stopper. The stopper drives the inclined tongue to retract into the housing to complete unlocking.

[0018] Further, the clutch gear further includes a plurality of elastic components. The elastic components include a second elastic member and steel balls. The sleeve assembly is provided with a plurality of mounting grooves. One end of the second elastic member abuts against the groove wall of the mounting groove, and the steel balls are provided at the other end of the second elastic member. A plurality of embedding grooves are provided on the outer periphery of the rotating shaft assembly.

[0019] In the above technical solution, the elastic components can connect the sleeve assembly and the rotating shaft assembly. When the torque received by the rotating shaft assembly is within the preset range, the sleeve assembly and the rotating shaft assembly rotate synchronously. When the torque received by the rotating shaft assembly is greater than the preset value, the rotating shaft assembly can rotate independently relative to the sleeve assembly. Thus, in the state where the transmission component or the driving member is powered off or jammed, the user can still unlock the lock with the key to meet the requirement of quickly unlocking in an emergency situation.

[0020] Further, the driving component includes a driving member, a gear set, and a rack. The output end of the driving member is connected to the rack through the gear set. The rack meshes with the clutch gear, and the driving component can drive the rack to move along its length direction.

[0021] In the above technical solution, the driving member drives the clutch gear to rotate through the rack, thereby realizing the opening and closing of the door lock, so that there is a larger accommodating space inside the shell, which is convenient for the layout of other components, can effectively save costs, and is conducive to reducing the volume of the product.

[0022] Furthermore, a plurality of sensors for sensing the positions of the locking tongue assembly and the paddle assembly are disposed in the housing.

[0023] In the above technical solution, the sensor can sense the positions of the lock tongue assembly and the paddle assembly, thereby determining the state of the door lock. The user can obtain the state of the door lock in real time through a mobile device such as a mobile phone, which is more convenient to use.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: during normal use, the clutch gear is in a connected state, the driving assembly can drive the paddle assembly through the clutch gear, and then drive the lock tongue assembly to extend and retract through the paddle assembly to achieve unlocking. When the key is operated, the lock core drives the lock tongue assembly to extend and retract through the paddle assembly, thereby achieving unlocking. When the driving assembly is powered off and the transmission mechanism is self-locking, force is applied to the clutch gear through the lock core. When the force is greater than the threshold of the clutch gear, the clutch gear can be switched from a connected state to a separated state. At this time, the sleeve assembly is disengaged from the shaft assembly, and the transmission connection between the paddle assembly and the driving assembly is disconnected. Continue to turn the handle or key to drive the lock tongue assembly to retract to achieve unlocking. In this way, the clutch gear can be effectively disengaged from the driving assembly to avoid the clutch gear being stuck by the driving assembly. The above structure is reasonable, easy to implement, and has efficient driving. There will be no situation where the lock cannot be unlocked due to self-locking, thereby improving the safety of the lock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the smart door lock according to an embodiment of the present invention.

[0026] Figure 2 It is a schematic structural diagram of a lock core and a first paddle according to an embodiment of the present invention.

[0027] Figure 3 Schematic diagram of the structure of the tongue assembly according to an embodiment of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the inclined tongue assembly and the third paddle according to an embodiment of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the clutch gear and the third paddle according to an embodiment of the present invention.

[0030] Figure 6 It is a schematic diagram of the internal structure of the clutch gear of the present invention.

[0031] Figure 7It is a schematic diagram of the structure of the driving assembly of the present invention.

[0032] Description of Figure Numbers:

[0033] Housing 1, lock core 2, lock tongue assembly 3, square tongue assembly 31, movable plate 311, square tongue 312, driving groove 313, guide groove 314, guide column 315, oblique tongue assembly 32, main body 321, connecting rod 322, block 323, first elastic member 324, clutch gear 4, sleeve assembly 41, rotating shaft assembly 42, shaft body 421, boss 422, embedding groove 423, elastic assembly 43, second elastic member 431, steel ball 432, paddle assembly 5, first paddle 51 , first tooth 511, limiting groove 512, limiting column 513, second paddle 52, second tooth 521, driving part 522, column 523, third tooth 524, third paddle 53, fourth tooth 531, virtual groove 532, connecting arm 533, first sheet 534, second sheet 535, driving assembly 6, driving member 61, gear set 62, bevel gear 621, first gear 622, second gear 623, third gear 624, rack 63, sensor 7. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0035] like Figures 1 to 6 As shown, in a preferred embodiment, the smart door lock of the present invention mainly includes a housing 1, in which a lock core 2, a bolt assembly 3, a clutch gear 4, a paddle assembly 5, and a driving assembly 6 are arranged. The lock core 2 is connected to the bolt assembly 3 through the paddle assembly 5, and the clutch gear 4 includes a sleeve assembly 41 and a shaft assembly 42. The sleeve assembly 41 is sleeved on the outer periphery of the shaft assembly 42, and the sleeve assembly 41 and the shaft assembly 42 are connected to the driving assembly 6 and the paddle assembly 5, respectively. Among them, the clutch gear 4 has a connected state and a separated state. When the clutch gear 4 is in the connected state, the sleeve assembly 41 is connected to the shaft assembly 42, and the driving assembly 6 is connected to the paddle assembly 5; when the clutch gear 4 is in the separated state, the sleeve assembly 41 is separated from the shaft assembly 42, and the transmission connection between the paddle assembly 5 and the driving assembly 6 is disconnected.

[0036] In normal use, the clutch gear 4 is in a connected state, and the driving assembly 6 can drive the paddle assembly 5 through the clutch gear 4, and then drive the bolt assembly 3 to extend and retract through the paddle assembly 5 to achieve unlocking. When the key is operated, the lock core 2 drives the bolt assembly 3 to extend and retract through the paddle assembly 5, thereby achieving unlocking. When the driving assembly 6 is powered off and the transmission mechanism is self-locking, the clutch gear 4 is applied with force through the lock core 2. When the force is greater than the threshold of the clutch gear 4, the clutch gear 4 can be switched from the connected state to the separated state. At this time, the sleeve assembly 41 is disengaged from the shaft assembly 42, and the transmission connection between the paddle assembly 5 and the driving assembly 6 is disconnected. Continue to turn the handle or key to drive the bolt assembly 3 to retract to achieve unlocking. In this way, the clutch gear 4 can be effectively disengaged from the driving assembly 6 to prevent the clutch gear 4 from being stuck by the driving assembly 6. The above structure is reasonable, easy to implement, and has efficient driving. There will be no situation where the lock cannot be unlocked due to self-locking, thereby improving the safety of the lock body.

[0037] Please refer to Figures 1 to 3 The lock tongue assembly 3 includes a square tongue assembly 31 and an oblique tongue assembly 32, and the paddle assembly 5 includes a first paddle 51, a second paddle 52, and a third paddle 53 connected in sequence. The first paddle 51 is sleeved on the outer periphery of the lock core 2, and the second paddle 52 and the third paddle 53 are respectively connected to the square tongue assembly 31 and the oblique tongue assembly 32.

[0038] Exemplarily, the first paddle 51 has a first tooth 511, the second paddle 52 has a second tooth 521 and a third tooth 524, and the third paddle 53 has a fourth tooth 531. The first tooth 511 is meshed with the second tooth 521, and the third tooth 524 is meshed with the fourth tooth 531. The first paddle 51, the second paddle 52, and the third paddle 53 are transmitted by meshing. The structure is simple, easy to implement, and the connection between the three is stable.

[0039] The lock core 2 is sequentially connected to the second paddle 52 and the third paddle 53 through the first paddle 51. When the lock core 2 rotates, the first paddle 51 drives the second paddle 52 and the third paddle 53 to rotate simultaneously. The second paddle 52 drives the square tongue 312 to retract through the movable plate 311. At the same time, the third paddle 53 drives the oblique tongue to retract through the connecting arm 533, thereby achieving the simultaneous retraction of the oblique tongue and the square tongue 312, so that the lock core 2 only needs to be rotated a small angle to unlock, which simplifies the unlocking operation, makes the door lock more convenient to use, and is conducive to quick unlocking in an emergency, thereby saving time and meeting the need for quick escape.

[0040] Please refer to Figure 2, the first flap 51 has at least one limiting groove 512. The limiting groove 512 is used to limit its maximum rotation angle. The limiting groove 512 is coaxial with the rotation axis of the first flap 51, and a limiting post 513 is inserted through the limiting groove 512. Exemplarily, there are two limiting grooves 512, which are symmetrically arranged on both sides of the first flap 51. The limiting groove 512 is formed as an arc coaxial with the rotation axis of the first flap 51. A limiting post 513 is inserted through the limiting groove 512, and the limiting post 513 is fixedly connected to the housing 1. By the cooperation of the limiting groove 512 and the limiting post 513, the rotation angle of the first flap 51 can be limited. When the first flap 51 rotates in place, the lock can be opened, thus ensuring the stability of the unlocking efficiency and making it more convenient to use.

[0041] Please refer to Figure 3 , the square tongue assembly 31 includes a movable movable plate 311 and a plurality of square tongues 312 arranged at one end of the movable plate 311. The second flap 52 extends outward to form a driving portion 522. A column 523 is provided on the driving portion 522. The movable plate 311 is provided with a driving groove 313, and the column 523 is inserted through the driving groove 313. Exemplarily, the driving portion 522 protrudes from the outer periphery of the second flap 52. The driving groove 313 is formed as an arc groove having an angle with the moving direction of the movable plate 311. The column 523 is inserted through the driving portion 522 and extends into the driving groove 313. When the second flap 52 rotates, the column 523 can abut against the groove wall of the driving groove 313, forcing the movable plate 311 to move in the retracting direction of the square tongue 312, thereby driving the square tongue 312 to retract. In some embodiments, the column 523 can be set to be rotatable along its central axis, so that it can rotate circumferentially along its own circumference while driving the movable plate 311 to move, thereby reducing the friction force between it and the movable plate 311 and extending the service life of the column 523 and the movable plate 311.

[0042] The movable plate 311 is provided with a guiding groove 314. The extending direction of the guiding groove 314 is parallel to the moving direction of the movable plate 311. The second flap 52 is provided with a guiding post 315. The guiding post 315 is coaxial with the rotation axis of the second flap 52, and the guiding post 315 is inserted through the guiding groove 314. The guiding groove 314 can guide the movable plate 311 to ensure the stability of the movable plate 311 during the moving process.

[0043] Please refer to Figure 4The oblique tongue includes a main body 321 and a connecting rod 322, one end of the connecting rod 322 is connected to the main body 321, and the other end of the connecting rod 322 is provided with a stopper 323, and the third paddle 53 has a connecting arm 533, and the stopper 323 abuts against the connecting arm 533. When the third paddle 53 rotates, the connecting arm 533 can abut against the stopper 323 and apply force to the stopper 323, and the stopper 323 drives the oblique tongue to move in a direction away from the outside of the housing 1, thereby driving the oblique tongue to retract into the housing 1, and completing the unlocking. The outer periphery of the connecting rod 322 is sleeved with a first elastic member 324, and the first elastic member 324 can be a spring. Through the first elastic member 324, a continuous force toward the outside of the housing 1 can be formed on the oblique tongue, thereby ensuring that the oblique tongue continues to extend out of the housing 1. When the third paddle 53 rotates, the connecting arm 533 can abut against the stopper 323 and apply force to the stopper 323, and the stopper 323 drives the oblique tongue to retract into the housing 1, and completing the unlocking.

[0044] The rotating shaft assembly 42 includes a shaft body 421, a boss 422 is provided on the outer periphery of the shaft body 421, and a virtual groove 532 is provided on the third paddle 53. The virtual groove 532 is formed as an arc groove with the center of the driven paddle as the axis. The boss 422 is located in the virtual groove 532. The shaft body 421 can rotate and drive the boss 422 to rotate. When the boss 422 moves in the virtual groove 532, the shaft body 421 and the third paddle 53 can rotate relatively independently. When the boss 422 abuts against the groove walls at both ends of the virtual groove 532, the shaft body 421 can drive the third paddle 53 to rotate synchronously.

[0045] The clutch gear 4 and the third paddle 53 are coaxial, and the third paddle 53 is provided with a virtual groove 532. The boss 422 can move in the virtual groove 532. When the boss 422 moves within the corresponding angle range of the virtual groove 532, the clutch gear 4 and the third paddle 53 can rotate relatively independently. When the boss 422 abuts against the groove walls at both ends of the virtual groove 532, the clutch gear 4 can drive the third paddle 53 to rotate synchronously.

[0046] It should be noted that, in this embodiment, the third paddle 53 includes a stacked first sheet 534 and a second sheet 535, wherein the first sheet 534 is provided with a fourth tooth 531 for connecting to the second paddle 52, and the second sheet 535 is provided with a connecting arm 533 for connecting to the inclined tongue assembly 32. In specific implementation, it is only necessary to ensure that the positions of the virtual grooves 532 of the two sheets correspond to each other. In some other embodiments, the third paddle 53 may be integrally formed.

[0047] During specific use, the convex platform 422 abuts against the groove wall at one end of the virtual position groove 532 in the initial state. At this time, the driving component 6 can be used to drive the clutch gear 4 to rotate. The clutch gear 4 drives the lock tongue assembly 3 to retract through the third dial 53. After the action is completed, the driving component 6 rotates in the reverse direction by a preset angle, so that the convex platform 422 moves to the other end of the virtual position groove 532. When unlocking manually, the third dial 53 drives the lock tongue to retract. At this time, the convex platform 422 rotates within the corresponding angle range of the virtual position groove 532, and the third dial 53 can rotate independently of the clutch gear 4, thereby avoiding driving the driving member 61 to move, achieving the effect of reducing wear and extending the service life.

[0048] Please refer to Figure 5 and Figure 6 The clutch gear 4 further includes a plurality of elastic components 43. The elastic components 43 include a second elastic member 431 and steel balls 432. The sleeve assembly 41 is provided with a plurality of installation grooves. One end of the second elastic member 431 abuts against the groove wall of the installation groove, and the steel balls 432 are arranged at the other end of the second elastic member 431. A plurality of embedding grooves 423 are provided on the outer circumference of the rotating shaft assembly 42.

[0049] The elastic member can provide a continuous pressure to the steel balls 432, so that the steel balls 432 are pressed tightly in the embedding grooves 423, thereby connecting the sleeve assembly 41 and the rotating shaft assembly 42 and enabling the two to rotate synchronously. When the torque received by the sleeve assembly 41 is greater than the preset value, the steel balls 432 move to the other end of the installation groove under the action of an external force, so as to disengage from the embedding grooves 423, separating the sleeve assembly 41 and the rotating shaft assembly 42, and further enabling the sleeve assembly 41 to rotate independently relative to the rotating shaft assembly 42.

[0050] It can be seen from the above technical solution that the elastic component 43 can connect the sleeve assembly 41 and the rotating shaft assembly 42. When the torque received by the rotating shaft assembly 42 is within the preset range, the sleeve assembly 41 and the rotating shaft assembly 42 rotate synchronously. When the torque received by the rotating shaft assembly 42 is greater than the preset value, the rotating shaft assembly 42 can rotate independently relative to the sleeve assembly 41, so that the user can still unlock with a key when the transmission component or the driving member 61 is powered off or jammed, meeting the requirement of quickly unlocking in an emergency situation.

[0051] The driving component 6 includes a driving member 61, a gear set 62, and a rack 63. The output end of the driving member 61 is connected to the rack 63 through the gear set 62. The rack 63 meshes with the clutch gear 4, and the driving component 6 can drive the rack 63 to move along its length direction.

[0052] Exemplarily, the driving member 61 is a motor, and the gear set 62 includes a bevel gear 621, a first gear 622, a second gear 623, and a third gear 624. The bevel gear 621 is connected to the output end of the driving member 61, the first gear 622 is meshed with the bevel gear 621, the second gear 623 is meshed with the first gear 622 and the third gear 624, and the third gear 624 is meshed with the rack 63. The driving member 61 drives the first gear 622 to rotate through the bevel gear 621, and drives the second gear 623 and the third gear 624 to rotate in sequence through the first gear 622, thereby driving the rack 63 to move. The overall structure is simple and easy to implement.

[0053] A plurality of sensors 7 for sensing the positions of the lock tongue assembly 3 and the paddle assembly 5 are provided in the housing 1. The sensors 7 can be contact switches. In specific implementation, a plurality of sensors 7 can be provided, which are respectively used to sense the positions of the square tongue 312, the oblique tongue, and the lock cylinder 2. Correspondingly, contact ends can be provided on the movable plate 311, the third paddle 53, and the first paddle 51. When the square tongue 312, the oblique tongue or the lock cylinder 2 is unlocked, its contact end contacts the corresponding sensor 7, thereby sensing the state of the lock tongue and then judging the state of the door lock. The user can obtain the state of the door lock in real time through a mobile device such as a mobile phone, which is more convenient to use.

[0054] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart door lock, comprising a housing, It is characterized in that The housing is provided with a lock core, a lock tongue assembly, a clutch gear, a paddle assembly, and a driving assembly. The lock core is connected to the lock tongue assembly through the paddle assembly. The clutch gear includes a sleeve assembly and a rotating shaft assembly. The sleeve assembly is sleeved on the outer periphery of the rotating shaft assembly. The sleeve assembly and the rotating shaft assembly are connected to the driving assembly and the paddle assembly respectively. The clutch gear has a connected state and a disconnected state. When the clutch gear is in the connected state, the sleeve assembly is connected to the shaft assembly, and the drive assembly is in transmission connection with the paddle assembly. When the clutch gear is in a disengaged state, the sleeve assembly is disengaged from the shaft assembly, and the transmission connection between the paddle assembly and the drive assembly is disconnected; The lock tongue assembly includes a square tongue assembly and an oblique tongue assembly, and the paddle assembly includes a first paddle, a second paddle, and a third paddle connected in sequence, the first paddle is sleeved on the outer periphery of the lock core, and the second paddle and the third paddle are respectively connected to the square tongue assembly and the oblique tongue assembly in a transmission manner; The rotating shaft assembly includes a shaft body, a boss is provided on the outer periphery of the shaft body, and the third paddle is provided with a virtual groove, the boss is located in the virtual groove, the shaft body can rotate and drive the boss to rotate, when the boss moves in the virtual groove, the shaft body and the third paddle can rotate relatively independently, and when the boss abuts against the groove walls at both ends of the virtual groove, the shaft body can drive the third paddle to rotate synchronously.

2. The smart door lock according to claim 1, It is characterized in that The first paddle has at least one limiting groove for limiting its maximum rotation angle, the limiting groove is coaxial with the rotation axis of the first paddle, and a limiting column is passed through the limiting groove.

3. The smart door lock according to claim 1, It is characterized in that The square tongue assembly includes a movable active plate and a plurality of square tongues arranged at one end of the movable plate. The second paddle extends outward to form a driving portion. The driving portion is provided with a column. The movable plate is provided with a driving groove. The column is inserted into the driving groove.

4. The smart door lock according to claim 3, It is characterized in that The movable plate is provided with a guide groove, the second paddle is provided with a guide column, the guide column is coaxial with the rotation axis of the second paddle, and the guide column passes through the guide groove.

5. The smart door lock according to claim 1, It is characterized in that The inclined tongue includes a main body, a connecting rod, and a first elastic member, wherein the first elastic member is sleeved on the outer circumference of the connecting rod, one end of the connecting rod is connected to the main body, and the other end of the connecting rod is provided with a stopper, and the third paddle has a connecting arm, which abuts against the stopper.

6. The smart door lock according to claim 1, It is characterized in that The clutch gear also includes a plurality of elastic components, which include a second elastic member and a steel ball. The sleeve assembly is provided with a plurality of mounting grooves. One end of the second elastic member is against the groove wall of the mounting groove. The steel ball is arranged at the other end of the second elastic member. The outer periphery of the rotating shaft assembly is provided with a plurality of embedded grooves.

7. The smart door lock according to claim 1, It is characterized in that a plurality of sensing members for sensing the positions of the locking tongue assembly and the paddle assembly are provided inside the housing.

Images