Intelligent apartment lock

Abstract

The intelligent apartment lock comprises a center balance wheel arranged in a lock shell, a driving device is arranged on one side of the center balance wheel, a transmission plate is arranged on the other side of the center balance wheel, and the driving device is in driving connection with the center balance wheel through a speed reducer. A spring bolt and the transmission plate are integrally arranged, a fixing plate is arranged on the center balance wheel, a circuit board and a power supply module are arranged above the fixing plate, and the speed reducer is provided with a gear set. The intelligent door lock does not need an external power supply, realizes intelligent unlocking, intelligent locking, timely unlocking and timely locking, has the advantages of efficient unlocking or locking and good user experience effect, not only solves the problem that some intelligent door locks on the market cannot be locked or unlocked during power failure, but also improves the safety of the intelligent door lock. And the problems that due to the fact that a transmission plate of an existing intelligent lock lacks a structure for limiting rotation of a center balance wheel and does not have a rotation limiting function, a motor easily drives the center balance wheel to idle, locking or unlocking is not timely frequently, and the user experience effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the field of intelligent locks, in particular to an intelligent apartment lock. Background Art

[0002] An intelligent door lock is an essential security tool for smart homes. Traditional door locks use keys to unlock. If a user accidentally loses the key, they cannot unlock and enter the home. With the development of intelligence, some intelligent door locks have emerged on the market. Generally, they use a motor to drive the lock tongue through gears to unlock or lock. Since the use of the motor requires an external power supply, if the mains power supply stops, the motor cannot work, resulting in the inability to lock or unlock, which seriously affects the user experience. At the same time, due to the lack of a structure and function for rotating and limiting the central pendulum wheel by the transmission plate in the lock case, the central pendulum wheel is prone to idling when driven by the motor, and the time for the motor to drive the lock tongue to extend or retract into the lock case cannot be accurately controlled during locking or unlocking, making it prone to problems such as untimely locking or unlocking, time-consuming locking or unlocking, and poor user experience. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an intelligent apartment lock.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: The intelligent apartment lock includes a lock case. A central pendulum wheel is provided inside the lock case. A driving device is provided on one side of the central pendulum wheel, and a transmission plate is provided on the other side of the central pendulum wheel. The driving device is drivingly connected to the central pendulum wheel through a speed reducer. The driving device drives the central pendulum wheel to rotate through the speed reducer to drive the transmission plate to perform a linear reciprocating motion. A lock tongue is provided on one side of the transmission plate. The lock tongue is integrally provided with the transmission plate. The transmission plate drives the lock tongue to extend out of the lock case for locking, and the transmission plate drives the lock tongue to retract into the lock case for unlocking. A fixing plate is provided on the central pendulum wheel. The fixing plate is fixed inside the lock case by screws.

[0005] By adopting the above technical solutions, since the driving device drives the central pendulum wheel to rotate through the speed reducer to drive the transmission plate to move, the fixing plate can limit the transmission of the central pendulum wheel and the transmission plate to prevent the central pendulum wheel and the transmission plate from arching and falling apart during transmission.

[0006] Preferably, the driving device is preferably a servo motor. The servo motor and the speed reducer are both installed on the fixing plate. A power supply module is further provided above the fixing plate. The power supply module is installed inside the lock case through a power supply bracket. The power supply module supplies power to the driving device and the circuit board through a power connector.

[0007] Preferably, the power supply module is preferably a lithium battery.

[0008] By adopting the above-mentioned technical solution, the power supply module can be movably installed on the power supply bracket to facilitate the removal of the power supply module for charging and the removal of the power supply module for maintenance or replacement, which avoids the situation where the drive device cannot be locked or unlocked after power failure.

[0009] Preferably, the output shaft of the driving device is provided with a driving gear; the reducer is provided with a gear set, and the gear set includes a first double gear and a second double gear.

[0010] By adopting the above technical solution, the driving device drives the central balance wheel to rotate after the first deceleration through the first double gear and the second deceleration through the second double gear.

[0011] Preferably, the first double gear is provided with a first large gear and a first small gear, the first large gear and the first small gear are coaxially designed, and the first large gear and the first small gear are integrally formed, and the driving gear is meshed and connected with the first large gear.

[0012] By adopting the above technical solution, the driving device drives the first large gear through the driving gear and then drives the first small gear to rotate to achieve initial deceleration, that is, the driving device achieves initial deceleration through the first double gear.

[0013] Preferably, the second double gear is provided with a second large gear and a second small gear, the second large gear and the second small gear are coaxially designed, and the second large gear and the second small gear are integrally formed, and the first small gear is meshingly connected with the second large gear.

[0014] By adopting the above technical solution, the second deceleration is achieved when the first small gear drives the second small gear to rotate through the second large gear, so that the driving device achieves two decelerations through the first double gear and the second double gear in sequence.

[0015] Preferably, the central balance wheel comprises a rotating shaft and a semicircular gear, the rotating shaft vertically penetrates the semicircular gear, the second pinion is meshedly connected with the semicircular gear, and the rotating shaft penetrates the lock housing and is rotatably connected with the lock housing.

[0016] Preferably, a guide groove is provided on the transmission plate, a guide pin used in conjunction with the guide groove is provided in the lock housing, a groove is recessed inwardly on the side of the transmission plate facing the center balance wheel, and a toggle block used in conjunction with the groove is extended outward from the semicircular gear.

[0017] By adopting the above technical solution, the central balance wheel reciprocates the groove of the transmission plate through the shifting block to drive the transmission plate to perform linear reciprocating motion along the guide groove.

[0018] Preferably, unlocking contact portions and locking contact portions are respectively provided at two ends of the semi-circular gear, unlocking limiting portions and locking limiting portions are respectively provided on two sides of the groove, the unlocking contact portions and the unlocking limiting portions are oppositely arranged, the locking contact portions and the locking limiting portions are oppositely arranged, and the lock tongue penetrates through a lock tongue through hole on the lock case.

[0019] By adopting the above technical solution, during the process that the central balance wheel drives the transmission plate to drive the lock tongue to retract into the lock case, when the unlocking contact portion contacts the unlocking limiting portion, it can prevent the central balance wheel from rotating excessively; during the process that the central balance wheel drives the transmission plate to drive the lock tongue to extend out of the lock case, when the locking contact portion contacts the locking limiting portion, it can prevent the central balance wheel from rotating excessively.

[0020] Preferably, a first sensor and a second sensor are respectively provided on the circuit board, and the first sensor and the second sensor are oppositely arranged. A magnet is provided on the transmission plate, and the magnet is installed on the transmission plate through a magnet mounting seat.

[0021] By adopting the above technical solution, the magnet can move reciprocally with the transmission plate. When the magnet moves below the first sensor and is detected by the first sensor, it will send a detection signal to the controller. After receiving the signal transmitted by the first sensor, the controller controls the driving device to stop driving the reducer and the central balance wheel from rotating, and then stops driving the transmission plate and the lock tongue from moving into the lock case to unlock; when the magnet moves below the second sensor and the second sensor detects the magnet, it will send a detection signal to the controller. After receiving the signal transmitted by the second sensor, the controller controls the driving device to stop driving the reducer and the central balance wheel from rotating in the reverse direction, and then stops driving the transmission plate and the lock tongue from moving in the reverse direction (i.e., extending out of the lock case) to lock. It can achieve precise and intelligent control of unlocking and locking while improving the efficiency of unlocking and locking, and realizes fast unlocking and fast locking.

[0022] Preferably, a third sensor is provided on one side of the lock tongue, and the third sensor is installed in a sensor mounting hole of the lock case. A magnet is also provided on a lock tongue receiving case on the door frame.

[0023] By adopting the above technical solution, when closing the door, when the third sensor detects the magnet on the lock tongue receiving case provided in the door frame, it will send a detection signal to the controller. The controller receives the signal transmitted by the third sensor and controls the driving device to start working. The driving device drives the lock tongue to extend out of the lock case to lock through the reducer, the central balance wheel and the transmission plate in sequence, and it can achieve precise control of the execution time of locking; when the second sensor detects the magnet on the transmission plate, the driving device drives the lock tongue to stop locking through the reducer, the central balance wheel and the transmission plate in sequence, and it realizes intelligent completion of locking.

[0024] As the preferred sensor, the first sensor, the second sensor and the third sensor are preferably Hall sensors. The first sensor, the second sensor and the third sensor can all be Hall sensors of model EW-550, but are not limited thereto.

[0025] Preferably, a controller is provided for signal control with the first sensor, the second sensor, the third sensor, the drive device and other components respectively. The controller is a PLC programmable logic controller. The PLC programmable logic controller may be a programmable logic controller produced in Shenzhen and having a model number of XDS-40T-D, but is not limited to this.

[0026] It should be noted that the power bracket, power connector and driving gear are functional descriptions of the bracket, connector and gear respectively.

[0027] Compared with the prior art, the beneficial effects of the utility model are as follows: 1. A fixing plate is provided on the center balance wheel, and the fixing plate can limit the transmission of the center balance wheel and the transmission plate to prevent the center balance wheel and the transmission plate from arching and falling apart during the transmission process.

[0028] 2. A power supply module is provided above the fixed plate. The power supply module is installed in the lock shell through a power supply bracket, and the power supply module can be movably installed on the power supply bracket to facilitate the removal of the power supply module for charging and the maintenance and replacement of the power supply module, thereby avoiding the situation where the lock cannot be locked or unlocked when the drive device is powered off.

[0029] 3. By designing the structure of the reducer, the driving device can achieve initial deceleration through the first double gear in the reducer, and the driving device can achieve double deceleration through the first double gear and the second double gear in the reducer in sequence, so that it can achieve accurate control of the speed of unlocking and locking the lock tongue by accurately controlling the speed of the reciprocating linear movement of the transmission plate.

[0030] 4. The structure of the transmission plate is designed. A groove is recessed inwardly on the side of the transmission plate facing the center balance wheel. A shifting block is extended outwardly on the semicircular gear. The groove and the shifting block are used together. The center balance wheel shifts the groove of the transmission plate through the shifting block to drive the transmission plate to make a linear reciprocating motion along the guide groove.

[0031] 5. An unlocking abutment and a locking abutment are respectively provided at both ends of the semicircular gear, and an unlocking limit portion and a locking limit portion are respectively provided on both sides of the groove. When the center balance wheel drives the transmission plate under the drive of the driving device to drive the lock tongue to retract into the lock shell, the unlocking abutment and the unlocking limit portion conflict with each other to prevent the center balance wheel from rotating excessively; when the center balance wheel drives the transmission plate under the drive of the driving device to drive the lock tongue to extend out of the lock shell, the locking abutment and the locking limit portion conflict with each other to prevent the center balance wheel from rotating excessively. This ensures that the driving device drives the center balance wheel and then drives the transmission plate to drive the lock tongue to accurately extend out of the lock shell or retract into the lock shell, so that the lock can be locked or unlocked in time, thereby solving the problem that the transmission plate of the current smart lock lacks a structure for limiting the rotation of the center balance wheel and has no rotation limiting function, which makes it easy for the motor to drive the center balance wheel to rotate idly, resulting in the problem of frequent untimely locking and unlocking and poor user experience.

[0032] 6. The first sensor and the second sensor are respectively provided on the circuit board, and a magnet is provided on the transmission plate, and the magnet moves back and forth with the transmission plate; when the first sensor detects the magnet, the driving device stops driving the transmission plate to unlock; when the second sensor detects the magnet, the driving device stops driving the transmission plate to lock, so that it can not only realize intelligent unlocking and locking, but also realize efficient unlocking and efficient locking.

[0033] 7. A third sensor is provided on one side of the lock tongue. When the third sensor detects the magnet on the lock tongue housing on the door frame, the lock tongue is driven by the driving device to extend out of the lock housing to lock. The locking execution time can be accurately controlled. When the second sensor detects the magnet on the transmission plate during the locking process of the lock tongue, the driving device stops driving the transmission plate to lock the door. The locking action is completed intelligently. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and accompanying drawings.

[0035] Figure 1 It is a three-dimensional diagram of the intelligent apartment lock of the present utility model.

[0036] Figure 2 This is a three-dimensional diagram of the internal structure of the smart apartment lock of the utility model with the circuit board and the power supply module removed.

[0037] Figure 3 This is a three-dimensional diagram of the internal structure of the smart apartment lock of the utility model with the circuit board, fixing plate and power supply module removed.

[0038] Figure 4 It is a three-dimensional diagram of the connection structure between the driving device and the reducer of the intelligent apartment lock of the utility model.

[0039] Figure 5 This is a three-dimensional view of the connection structure between the drive device of the intelligent apartment lock of the present utility model and the reducer and the transmission plate.

[0040] Figure 6 This is a three-dimensional structure diagram of the central pendulum wheel of the intelligent apartment lock of the present utility model.

[0041] Figure 7 This is a three-dimensional view of the transmission plate of the intelligent apartment lock of the present utility model.

[0042] Figure 8 This is a three-dimensional view of different faces of the transmission plate of the intelligent apartment lock of the present utility model. Detailed implementation manners

[0043] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0045] Referring to Figures 1 to 8 As shown, the intelligent apartment lock of the present utility model includes a lock case 1. A central pendulum wheel 2 is provided inside the lock case 1. A drive device 3 is provided on one side of the central pendulum wheel 2, and a transmission plate 4 is provided on the other side of the central pendulum wheel 2. The drive device 3 is drivingly connected to the central pendulum wheel 2 through a reducer 5. The drive device 3 drives the central pendulum wheel 2 to rotate through the reducer 5 to drive the transmission plate 4 to perform a linear reciprocating motion. A lock tongue 6 is integrally provided with the transmission plate 4. The transmission plate 4 drives the lock tongue 6 to extend out of the lock case 1 for locking, and the transmission plate 4 drives the lock tongue 6 to retract into the lock case 1 for unlocking. A fixing plate 7 is provided on the central pendulum wheel 2. The fixing plate 7 is fixed inside the lock case 1 by screws. The drive device 3 and the reducer 5 are both installed on the fixing plate 7. A circuit board 8 is provided above the fixing plate 7. The circuit board 8 is installed inside the lock case 1 through a circuit board bracket 9. A power supply module 10 is also provided above the fixing plate 7. The power supply module 10 is installed inside the lock case 1 through a power supply bracket 11. The power supply module 10 supplies power to the drive device 3 and the circuit board 8 through a power connector 12. A drive gear 13 is provided on the output shaft of the drive device 3. The reducer 5 is provided with a gear set 50. The gear set 50 includes a first double gear 51 and a second double gear 52.

[0046] In one embodiment, the first double gear 51 is provided with a first large gear 511 and a first small gear 512. The first large gear 511 and the first small gear 512 are coaxially designed, and the first large gear 511 and the first small gear 512 are integrally formed, and the driving gear 13 is meshed and connected with the first large gear 511.

[0047] In one embodiment, the second double gear 52 includes a second large gear 521 and a second small gear 522 . The second large gear 521 and the second small gear 522 are coaxially designed, and the second large gear 521 and the second small gear 522 are integrally formed. The first small gear 512 is meshed and connected with the second large gear 521 .

[0048] In one embodiment, the central balance wheel 2 includes a rotating shaft 21 and a semicircular gear 22 , the rotating shaft 21 vertically penetrates the semicircular gear 22 , the second pinion 522 is meshedly connected with the semicircular gear 22 , and the rotating shaft 21 penetrates the lock housing 1 and is rotatably connected with the lock housing 1 .

[0049] In one embodiment, a guide groove 41 is provided on the transmission plate 4, a guide pin 42 used in conjunction with the guide groove 41 is provided in the lock housing 1, a groove 43 is recessed inwardly on the side of the transmission plate 4 facing the center balance wheel 2, and a toggle block 23 used in conjunction with the groove 43 is extended outwardly from the semicircular gear 22.

[0050] In one of the embodiments, an unlocking resistance portion 24 and a locking resistance portion 25 are respectively provided at both ends of the semicircular gear 22, and an unlocking limit portion 44 and a locking limit portion 45 are respectively provided on both sides of the groove 43. The unlocking resistance portion 24 is arranged opposite to the unlocking limit portion 44, and the locking resistance portion 25 is arranged opposite to the locking limit portion 45. The lock tongue 6 passes through a lock tongue through hole 61 provided on the lock housing 1.

[0051] In one embodiment, a first sensor 81 and a second sensor 82 are respectively provided on the circuit board 8 , and the first sensor 81 and the second sensor 82 are arranged opposite to each other; a magnet 46 is provided on the transmission plate 4 , and the magnet 46 is installed on the transmission plate 4 through a magnet mounting seat 47 .

[0052] In one embodiment, a third sensor 14 is disposed on one side of the lock tongue 6 , and the third sensor 14 is installed in a sensor installation hole 15 of the lock housing 1 .

[0053] In one embodiment, the driving device 3 is preferably a servo motor.

[0054] In one embodiment, the working principle of the smart apartment lock is as follows: a gear set 50 is provided in the reducer 5, the gear set 50 includes a first double gear 51 and a second double gear 52, and the first double gear 51 is provided with a first large gear 511 and a first small gear 512, and the second double gear 52 is provided with a second large gear 521 and a second small gear 522, and the first large gear 511 and the first small gear 512 are integrally formed and the second large gear 521 and the second small gear 522 are integrally formed, because the driving gear 13 is meshed with the first large gear 511 in the first double gear 51, the first small gear 512 in the first double gear 51 is meshed with the second large gear 521 in the second double gear 52, and the second small gear 522 in the second double gear 52 is meshed with the semicircular gear 22 of the center balance wheel 2. When the driving device 3 drives the driving gear 13 to rotate forward and reversely, it can drive the first large gear 511 in the first double gear 51 to rotate forward and reverse synchronously, and the first large gear 511 can drive the second large gear 521 in the second double gear 52 to rotate forward and reverse synchronously through the first small gear 512, and the second large gear 521 can drive the semicircular gear 22 to swing back and forth through the second small gear 522, so as to drive the center balance wheel 2 to swing back and forth.

[0055] A groove 43 is recessed inwardly on the side of the transmission plate 4 facing the center balance wheel 2 and a shifting block 23 is extended outwardly on the semicircular gear 22. When the center balance wheel 2 swings back and forth, the shifting block 23 shifts the groove 43 of the transmission plate 4 to drive the transmission plate 4 to make a linear reciprocating motion along the guide groove 41.

[0056] It also provides an unlocking abutment 24 and a locking abutment 25 at both ends of the semicircular gear 22, and an unlocking limit portion 44 and a locking limit portion 45 at both sides of the groove 43. Since the lock tongue 6 and the transmission plate 4 are integrally arranged, when the transmission plate 4 makes a linear reciprocating motion along the guide groove 41, it can drive the lock tongue 6 to move and retract into the lock housing 1 to achieve unlocking, or extend out of the lock housing 1 to achieve locking. In the process of the center balance wheel 2 driving the transmission plate 4 to drive the lock tongue 6 to retract into the lock housing 1, the unlocking abutment portion 24 of the center balance wheel 2 abuts against the unlocking limit portion 44 of the transmission plate 4 to prevent the center balance wheel 2 from excessive rotation, so as to achieve timely unlocking and rapid unlocking; on the contrary, in the process of the center balance wheel 2 driving the transmission plate 4 to drive the lock tongue 6 to extend out of the lock housing 1, the locking abutment portion 25 of the center balance wheel 2 abuts against the locking limit portion 45 of the transmission plate 4 to prevent the center balance wheel 2 from excessive rotation, so as to achieve timely locking and rapid locking, and to prevent the motor-driven center balance wheel 2 from idling.

[0057] It is provided with a first sensor 81 and a second sensor 82 on the circuit board 8, and a magnet 46 is provided on the transmission plate 4. The magnet 46 can reciprocate as the transmission plate 4 moves. When the magnet 46 moves to below the first sensor 81 and is detected by the first sensor 81 as the transmission plate 4 moves, the driving device 3 stops driving the transmission plate 4 to unlock; when the magnet 46 moves to below the second sensor 82 and is detected by the second sensor 82 as the transmission plate 4 moves, the driving device 3 stops driving the transmission plate 4 to lock. It realizes intelligent unlocking and intelligent locking, and at the same time realizes timely and efficient unlocking or timely and efficient locking.

[0058] It is also provided with a third sensor 14 on one side of the lock tongue 6. Since there is also a magnet 46 on the lock tongue receiving shell on the door frame, when closing the door, when the third sensor 14 detects the magnet 46 on the lock tongue receiving shell provided in the door frame, the driving device 3 drives the lock tongue 6 to extend out of the lock shell 1 to lock, and it realizes the ability to accurately control the time of the locking execution; since the magnet 46 will move synchronously with the transmission plate 4 during the process of the transmission plate 4 driving the lock tongue 6 to lock, when the second sensor 82 detects the magnet 46 on the transmission plate 4, the driving device 3 stops driving the transmission plate 4 to lock. At this time, it completes the operation of intelligent locking.

[0059] It also movably installs the power supply module 10 on the power supply bracket 11 to facilitate removing the power supply module 10 for charging, maintenance or replacement. The power supply module 10 supplies power to the driving device 3 and the circuit board 8 through the power connector 12 together, and it realizes that there is no need for an external power supply, thus solving the problem that some smart door locks on the market cannot lock or unlock when the mains power supply stops.

[0060] The structural design of it not only realizes that the fixing plate 7 can limit the center pendulum wheel 2 and the transmission plate 4 to prevent the center pendulum wheel 2 and the transmission plate 4 from arching and falling apart during the transmission process, but also the driving device 3 realizes primary deceleration through the first double gear 51 in the reducer 5, and the driving device 3 realizes secondary deceleration through the second double gear 52 in the reducer 5, that is, the driving device 3 realizes two-stage deceleration through the gear set 50 in the reducer 5. At the same time, when the center pendulum wheel 2 and the transmission plate 4 are used in cooperation, it also realizes the ability to prevent the center pendulum wheel 2 from rotating excessively, and in cooperation with multiple sensors, it not only realizes intelligent unlocking, intelligent locking, timely and accurate unlocking and timely and accurate locking, but also has the advantages of efficient unlocking, efficient locking and good user experience. It effectively solves the problem that the transmission plate of the current smart lock often has problems such as untimely locking, untimely unlocking and poor user experience due to the lack of a structure for limiting the rotation of the center pendulum wheel and the lack of the function of rotation limitation, which easily causes the motor to drive the center pendulum wheel to rotate idly.

[0061] The above embodiments are only examples of the present utility model and are not intended to limit the implementation and scope of rights of the present utility model. Any technical solutions that are the same as or equivalent to the content described in the claims of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Smart apartment lock, characterized by: The invention comprises a lock shell, characterized in that: a central balance wheel is arranged in the lock shell, a driving device is arranged on one side of the central balance wheel, a transmission plate is arranged on the other side of the central balance wheel, the driving device is connected to the central balance wheel through a reducer, the driving device drives the central balance wheel to rotate through the reducer to drive the transmission plate to make a linear reciprocating motion; a lock tongue is arranged integrally with the transmission plate, the transmission plate drives the lock tongue to extend out of the lock shell to lock, and the transmission plate drives the lock tongue to retract into the lock shell to unlock; A fixing plate is provided on the central balance wheel, a circuit board is provided above the fixing plate, and a power supply module is also provided above the fixing plate, and the power supply module supplies power to the driving device and the circuit board through a power connector; The output shaft of the driving device is provided with a driving gear, and the reducer is provided with a gear set, which includes a first double gear and a second double gear.

2. The smart apartment lock according to claim 1, characterized in that: The first double gear is provided with a first large gear and a first small gear, the first large gear and the first small gear are coaxially designed, and the first large gear and the first small gear are integrally formed, and the driving gear is meshed and connected with the first large gear.

3. The smart apartment lock according to claim 2, characterized in that: The second double gear is provided with a second large gear and a second small gear, the second large gear and the second small gear are coaxially designed, and the second large gear and the second small gear are integrally formed, and the first small gear is meshed and connected with the second large gear.

4. The smart apartment lock according to claim 3, characterized in that: The central balance wheel comprises a rotating shaft and a semicircular gear, the rotating shaft vertically penetrates the semicircular gear, the second pinion is meshed and connected with the semicircular gear, and the rotating shaft penetrates the lock housing and is rotatably connected with the lock housing.

5. The smart apartment lock according to claim 4, characterized in that: The transmission plate is provided with a guide groove, a guide pin matched with the guide groove is provided in the lock housing, a groove is recessed inwardly on one side of the transmission plate facing the center balance wheel, and a toggle block matched with the groove is extended outwardly on the semicircular gear.

6. The smart apartment lock according to claim 5, characterized in that: An unlocking resistance part and a locking resistance part are respectively arranged at both ends of the semicircular gear, and an unlocking limit part and a locking limit part are respectively arranged at both sides of the groove. The unlocking resistance part is arranged opposite to the unlocking limit part, and the locking resistance part is arranged opposite to the locking limit part.

7. The smart apartment lock according to claim 1, characterized in that: The circuit board is provided with a first sensor and a second sensor respectively, and the first sensor is arranged opposite to the second sensor; and the transmission plate is provided with a magnet.

8. The smart apartment lock according to claim 1, characterized in that: A third sensor is arranged on one side of the lock tongue.

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