Intelligent internet-of-things lock

Abstract

The application belongs to the technical field of locks, and particularly relates to an intelligent internet lock, which comprises a main body shell and a lock fixing plate, the lock fixing plate is a fixing plate on a cabinet body for installing the intelligent internet lock, a bolt mounting hole is arranged on the lock fixing plate, the main body shell is provided with a handle countersunk hole and a first threaded hole, and the main body shell is fixedly installed on the lock fixing plate through the bolt mounting hole and the first threaded hole. The application has the beneficial effect of adapting to an electronic lock intelligent lock control system, especially the electronic lock intelligent lock control system of State Grid and Southern Power Grid, and has the advantages of being networkable, small in size, free of mechanical keys, and having certain waterproof performance, can adapt to most conventional cabinet bodies on the market, can send a sound alarm and an alarm to the electronic lock intelligent lock control system when illegal intrusion occurs, can provide emergency power supply, and can store the time of opening and closing the lock.

Description

Technical Field

[0001] This invention belongs to the field of lock technology, specifically relating to an intelligent IoT lock. Background Technology

[0002] Currently, with the rapid development of IoT technology, industrial scenarios such as base stations, power, railways, and logistics have placed higher demands on the security, real-time monitoring, and convenient management of outdoor and indoor cabinets. These demands require recording the opening and closing times of the cabinets, as well as the operators, and require approval and authorization before opening the cabinets. In particular, for low- and high-voltage cabinets on the State Grid, the State Grid has begun to propose stricter remote control requirements.

[0003] Traditional cabinet locks are mostly purely mechanical, which has the following shortcomings: Management difficulties: Keys are easily lost or illegally copied, and it is impossible to record the specific personnel and times when the locks are opened or closed.

[0004] Status unknown: It is impossible to monitor in real time whether the lock is in a "locked" or "unlocked" state. Often, due to human negligence, cabinet doors are not closed properly, which leads to asset security risks.

[0005] High maintenance costs: When a malfunction or unauthorized intrusion occurs, remote alarms cannot be triggered immediately, requiring manual inspection.

[0006] Therefore, developing a lock that is compact, highly integrated, network-enabled, and possesses multi-state sensing and low-power IoT capabilities is of significant practical importance and market demand. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention provides an intelligent IoT lock.

[0008] The technical solution of the present invention is as follows: it includes a main body shell and a lock fixing plate. The lock fixing plate is a fixed mounting plate on the cabinet for installing smart IoT locks. The lock fixing plate is provided with bolt mounting holes. The main body shell is provided with a handle countersunk hole and a first threaded hole. The main body shell is fixedly mounted on the lock fixing plate through bolts and the first threaded hole in the bolt mounting hole.

[0009] A handle assembly is installed in the countersunk hole of the handle. The handle assembly consists of a handle, a connector, and a torsion spring. The main body of the connector is a rotating body. A locking hook is installed at one end of the connector. The other end of the connector is rotatably connected to the handle. A torsion spring is installed between the connector and the handle. The torsion spring provides a preload force under its own spring force to make the handle rotate and pop out relative to the connector. A positioning frustum is provided in the middle of the connector.

[0010] The countersunk hole of the handle consists of a countersunk hole and a through hole, and there is a shoulder surface between the countersunk hole and the through hole. The positioning frustum of the connector rests on the shoulder surface, and the end of the connector where the locking hook is installed passes through the through hole.

[0011] The handle has a locking groove at the end away from the connector. The main body housing has a locking drive assembly installed on the back. The output end of the locking drive assembly has a movable locking block. The locking block matches the locking groove to lock the handle.

[0012] The main control board is installed on the back of the main body shell. The main control board electrically controls the switch of the locking drive component. The locking drive component is any one of an electromagnetic drive mechanism, a motor drive mechanism, or a drive mechanism that combines a motor and a reduction mechanism.

[0013] Preferably, the connector has a first pin hole, and the handle is rotatably mounted on the connector end and has a second pin hole. The first pin hole and the second pin hole are sized to match each other and a pin is installed in the first pin hole and the second pin hole. The positioning platform has a spring groove, and the handle has two upwardly protruding spring blocks below the torsion spring. One end of the torsion spring is stuck in the spring groove, and the other end of the torsion spring is bent into a U-shape and stuck in the two spring blocks.

[0014] Preferably, the connector has a positioning frustum, and a sealing ring is installed between the positioning frustum and the countersunk hole of the handle.

[0015] Preferably, the positioning frustum and the shoulder surface are respectively provided with a first sealing groove and a second sealing groove, and the sealing ring is installed in the receiving cavity formed by the cooperation of the first sealing groove and the second sealing groove to perform a sealing function.

[0016] Preferably, the locking drive assembly adopts a linear travel mechanism of an electrically controlled switch.

[0017] Preferably, a circuit board box is also installed on the back of the main body shell. The circuit board box contains a battery and / or a wired power supply interface. The battery is used to power the main control board and the locking drive assembly, and the wired power supply interface can power the main control board and the locking drive assembly as well as charge the battery.

[0018] Preferably, the main body shell is further provided with a handle groove at the handle countersunk hole, and the handle is fitted into the handle groove when the handle assembly is locked; The handle groove is provided with a locking groove through hole below it, and the locking groove of the handle passes through the locking groove through hole and matches and locks with the locking block on the locking drive assembly; The locking groove through hole is surrounded by a water-blocking protrusion, and the handle groove is provided with a water-guiding block above the locking groove through hole.

[0019] Preferably, the main control board is installed inside a circuit board box, and the main control board is equipped with a communication module with network communication function.

[0020] Preferably, the communication module is a wired communication module, a wireless communication module, or a combination of a wired communication module and a wireless communication module, wherein the wireless communication module uses Wi-Fi and / or Bluetooth.

[0021] Preferably, the main body shell is further provided with an emergency power supply hole, an emergency power supply interface is installed in the emergency power supply hole, a rubber ring is installed on the back of the main body shell, and a power supply port cover is provided at one end of the rubber ring, the power supply port cover and the emergency power supply hole are matched and sealed together.

[0022] Preferably, the emergency power supply hole is equipped with a USB interface or a magnetic charging interface, the USB interface is electrically connected to the main control board for power supply, and the USB interface is a Type-A, Type-B, Type-C, Micro-B or Mini-B interface.

[0023] Preferably, the connector mounting hook end is provided with a square, hexagonal or opposite-sided positioning protrusion that matches the locking hook. The locking hook is fixedly mounted on the connector by the positioning protrusion. A rotation limiting piece is also installed on the positioning protrusion. A first limiting block is provided around the rotation limiting piece, extending outward. A second limiting block is provided within the rotation range of the first limiting block. The first limiting block and the second limiting block cooperate to limit the rotation angle range of the rotation limiting piece.

[0024] Preferably, the locking block has a beveled surface on the back side away from the main body housing.

[0025] Preferably, a locking drive component groove is provided on the back of the main body shell, the locking drive component is installed in the locking drive component groove, a main body shell base is installed above the locking drive component groove, a second threaded hole is provided on the main body shell, a third threaded hole is provided on the main body shell base, and the circuit board box is tightened onto the second threaded hole and the third threaded hole by screws.

[0026] Preferably, the present invention is equipped with a unique identification RFID chip or identification QR code or digital code, the RFID chip is adapted to the terminal of the RFID electronic lock intelligent lock control system, and the main control board is connected to the RFID electronic lock intelligent lock control system through a communication module.

[0027] The beneficial effects of this invention are that it is compatible with electronic lock intelligent control systems, especially those of the State Grid and Southern Power Grid. It has the advantages of being network-connected, small in size, without mechanical keys, and having a certain degree of waterproof performance. It can be adapted to most conventional cabinets on the market, emits sound alarms when there is illegal intrusion, and alerts the electronic lock intelligent control system. It can provide emergency power supply and store the lock opening and closing time. Attached Figure Description

[0028] Figures 1-3 and Figure 7 This is a schematic diagram of the structure of the present invention.

[0029] Figure 4 This is an exploded view of the present invention.

[0030] Figure 5 This is a cross-sectional view of the present invention.

[0031] Figure 6 This is a three-dimensional sectional view of the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the present invention without the locking hook installed.

[0033] Figures 9-11 This is a structural view of the outer shell of the main body of the present invention.

[0034] Figures 12-14 This is a schematic diagram of the handle assembly of the present invention.

[0035] Figure 15 This is a perspective sectional view of the main body shell and handle assembly of the present invention.

[0036] Figure 16 This is a schematic diagram of the structure of the main body shell and handle assembly of the present invention.

[0037] Figures 17-18 This is a schematic diagram of the connector structure of the present invention.

[0038] Figures 19-20 This is a schematic diagram of the handle of the present invention.

[0039] Figure 21 This is a schematic diagram of the magnetic charging interface scheme used in this invention.

[0040] Figure 22 This is an exploded view of the magnetic charging interface scheme used in this invention.

[0041] Figure 23 for Figure 22 A magnified view of a portion of point A.

[0042] Figures 1-23In the middle, 1. Main body shell, 11. Handle countersunk hole, 111. Countersunk hole, 112. Through hole, 113. Shoulder surface, 114. Second sealing groove, 12. First threaded hole, 13. Back side, 14. Handle groove, 15. Emergency power supply hole, 151. Magnetic charging interface, 16. Locking groove through hole, 17. Water-blocking protrusion, 18. Water-diverting block, 20. Second limiting block, 21. Locking drive component groove, 22. Second threaded hole, 2. Main body shell base, 23. Third threaded hole, 3. Handle assembly, 31. Handle, 311. Second pin hole, 31 2. Locking groove; 313. Spring stop block; 32. Connector; 321. Positioning frustum; 322. First pin hole; 323. Positioning protrusion; 324. First sealing groove; 325. Step; 326. Spring groove; 33. Torsion spring; 34. Pin; 35. Locking hook; 36. Sealing ring; 37. Rotation limit plate; 371. First limit block; 4. Rubber ring; 41. Power supply port cover; 5. Locking drive assembly; 51. Locking block; 52. Inclined surface; 6. Lock fixing plate; 61. Bolt mounting hole; 7. Circuit board box; 8. Main control board wiring port. Detailed Implementation

[0043] The embodiments of the present invention will be further described below with reference to the accompanying drawings: like Figures 1-23 As shown, this embodiment provides a smart IoT lock, including a main body shell 1 and a lock fixing plate 6. The lock fixing plate 6 is a fixed mounting plate on the cabinet for installing the smart IoT lock. All cabinets that need to install locks will have a fixed mounting plate, or the cabinet door is provided with a special bolt mounting hole 61 for installing locks. The lock fixing plate 6 is provided with bolt mounting holes 61. The main body shell 1 is provided with a handle countersunk hole 11 and a first threaded hole 12. The main body shell 1 is fixedly installed on the lock fixing plate 6 through bolts in the bolt mounting hole 61 and the first threaded hole 12. Generally, 2 to 3 bolts are used for installation.

[0044] A handle assembly 3 is installed inside the countersunk hole 11 of the handle. The handle assembly 3 consists of a handle 31, a connector 32, and a torsion spring 33. The main body of the connector 32 is a rotating body. A locking hook 35 is installed at one end of the connector 32, and the other end of the connector 32 is rotatably connected to the handle 31. A torsion spring 33 is installed between the connector 32 and the handle 31. The torsion spring 33 provides a preload force under its own spring force to make the handle 31 rotate and pop out relative to the connector 32. A positioning frustum 321 is provided in the middle of the connector 32. When the handle 31 of the handle assembly 3 is in the open state, the connector 32 can be rotated, thereby causing the locking hook 35 to rotate. Once the locking hook 35 rotates, it causes the locking hook 35 to disengage from the cabinet or a special lock, ultimately allowing the cabinet to be opened.

[0045] The countersunk hole 11 of the handle is composed of a countersunk hole 111 and a through hole 112. There is a shoulder surface 113 between the countersunk hole 111 and the through hole 112. The positioning frustum 321 of the connector 32 rests on the shoulder surface 113 and the end of the connector 32 that is equipped with the locking hook 35 passes through the through hole 112.

[0046] The handle 31 is provided with a locking groove 312 at the end away from the connector 32. The main body shell 1 is provided with a locking drive assembly 5 at the back 13. The output end of the locking drive assembly 5 is provided with a movable locking block 51. The locking block 51 and the locking groove 312 match each other to lock the handle 31.

[0047] The main control board is installed on the back of the main body shell 1. The main control board controls the switch of the locking drive assembly 5 by electrical control. The main control board is not shown in the accompanying drawings. The main control board is generally installed in the circuit board box 7, and then the circuit board box 7 is installed on the back of the main body shell 1.

[0048] The locking drive assembly 5 is electrically controlled and its switching signal is issued by the main control board. The locking block 51 of the locking drive assembly 5 is in the extended state by default. When the main control board issues an opening signal, the locking block 51 of the locking drive assembly 5 retracts, and the handle 31 rotates and pops out under the preload of the torsion spring 33.

[0049] The locking drive assembly 5 can be any one of an electromagnetic drive mechanism, a motor drive mechanism, or a drive mechanism that combines a motor and a reduction mechanism. If an electromagnetic drive locking drive assembly 5 is used, an electromagnetic drive device with a return spring can also be used inside the electromagnetic drive. In the event of a power outage, the internal spring will ensure that the lock is always in the closed state, that is, the locking block 51 of the locking drive assembly 5 is always in the extended state under the action of the return spring.

[0050] Preferably, the present invention is equipped with a unique identification RFID chip or identification QR code or digital code, the RFID chip is adapted to the terminal of the RFID electronic lock intelligent lock control system, and the main control board is connected to the RFID electronic lock intelligent lock control system through a communication module.

[0051] This invention does not have a mechanical unlocking function and can only be opened with electronic authorization. Operators must obtain authorization before opening this lock. The operator first holds the terminal of the RFID electronic lock intelligent control system (which can be a portable device such as a mobile phone or iPad). By identifying the RFID chip, scanning a QR code, or entering a digital code, the operator identifies the lock's unique identifier. The terminal of the RFID electronic lock intelligent control system will display all the information about the lock, and then the operator can apply for and obtain unlocking authorization.

[0052] After approval, the operator obtains opening authorization and uses the terminal of the RFID electronic lock intelligent lock control system to control the opening of the invention. The opening process involves the terminal of the RFID electronic lock intelligent lock control system sending an opening signal to the invention, the main control board causing the locking block 51 of the locking drive assembly 5 to retract, and the handle 31 rotating and popping out under the preload of the torsion spring 33. After the handle 31 pops out, the operator rotates the handle 31 by hand to finally open the cabinet door.

[0053] When closing the cabinet door, simply reset the handle 31, and the locking block 51 of the locking drive assembly 5 will match and lock with the locking groove 312.

[0054] To facilitate rotation of the handle 31 at various angles, preferably, the connector 32 has a first pin hole 322, and the end of the handle 31 rotatably mounted on the connector 32 has a second pin hole 311. The dimensions of the first pin hole 322 and the second pin hole 311 are matched, and pins 34 are installed in both holes. The positioning frustum 321 has a spring groove 326, and the handle 31 has two upwardly protruding spring stops 313 below the torsion spring 33. One end of the torsion spring 33 extends into the spring groove 326, and the other end of the torsion spring 33 is bent into a U-shape and locked into the two spring stops 313. In this way, the handle 31 can both spring up and rotate.

[0055] In practical applications, electrical equipment cabinets may be located in humid or high-humidity environments, and some cabinets may even be outdoors. Many cabinets require a certain degree of waterproofing, especially in the low-voltage and high-voltage cabinet field. Furthermore, since this invention contains a main control board that cannot be submerged in water, it is preferable that this invention possesses a certain degree of waterproofing. Preferably, a sealing ring 36 is installed between the positioning frustum 321 of the connector 32 and the countersunk hole 11 of the handle. This sealing ring 36 achieves a seal at the connector 32, so that when a small amount of condensation or rainwater gets onto the connector 32, it will be sealed and eventually flow to the ground under gravity.

[0056] To facilitate better installation of the sealing ring 36, preferably, the positioning frustum 321 and the shoulder surface 113 are respectively provided with corresponding first sealing grooves 324 and second sealing grooves 114. The sealing ring 36 is installed in the receiving cavity formed by the cooperation of the first sealing groove 324 and the second sealing groove 114 to perform a sealing function. The sealing ring 36 is preferably an O-ring, which is inexpensive, available in many specifications, requires no customization, and is readily available in various rubber materials on the market.

[0057] Preferably, the locking drive assembly 5 adopts a linear motion mechanism of an electrically controlled switch. Of course, the locking drive assembly 5 can also adopt an angular motion mechanism of an electrically controlled switch. However, the linear motion mechanism has the advantages of small size and convenient control in order to make the lock more compact.

[0058] To facilitate power supply to the present invention, preferably, a circuit board box 7 is also installed on the back 13 of the main body shell 1. The circuit board box 7 contains a battery and / or a wired power supply interface. The battery powers the main control board and the locking drive assembly 5, and the wired power supply interface powers the main control board and the locking drive assembly 5 as well as charges the battery. Generally, the main control board is also directly installed inside the circuit board box 7.

[0059] For ease of wiring, preferably, the main control board wiring port 8 is installed on the side of the circuit board box 7 near the emergency power supply port 151. The main control board wiring port 8 can be equipped with interfaces such as +12V, GND, CANL, CANH, and communication. +12V refers to the operating voltage that powers the main control board. Of course, commonly used low-voltage voltages such as +1.8V, +3.2V, +5V, +6V, +9V, +15V, +18V, +24V, and +36V can also be used. Alternatively, unconventional voltages below 48V, such as +16V, can also be used as the operating voltage. For smart locks, +5V, +12V, +24V, and +36V provide relatively high power while remaining within a safe voltage range. Considering various factors, a +12V operating voltage was chosen, providing sufficient power while being safer than +24V and +36V, ensuring safety even in very humid environments.

[0060] The communication interface is used for wired network transmission, but wireless communication devices such as Bluetooth and WiFi are also installed on the main control board.

[0061] CANL and CANH are interfaces used for CAN bus transmission. The Q / GDW 12027—2025 Technical Specification for Smart IoT Locks standard specifies the requirements for CAN communication in detail.

[0062] The best way to use this product is to connect the low-voltage power supply inside the cabinet to the wired power supply interface to power the invention and charge the battery. Installing the battery allows the invention to continue working for a long time even when the cabinet is powered off. Since the switching frequency of the invention is not very high and there is no need to report data to the RFID electronic lock intelligent lock control system in real time, a full battery can basically last for several months. The specific standby time depends on the battery capacity.

[0063] In addition, when the cabinet suddenly loses power, the present invention will use the power in the battery to work and report the abnormal status of the cabinet to the RFID electronic lock intelligent lock control system, so that the power grid operator and maintenance personnel can detect and handle the maintenance in time.

[0064] Preferably, the main body shell 1 is further provided with a handle groove 14 at the handle countersunk hole 11, and the handle 31 is matched and installed in the handle groove 14 when the handle assembly 3 is locked.

[0065] The handle groove 14 is provided with a locking groove through hole 16 below it. The locking groove 312 of the handle 31 passes through the locking groove through hole 16 and matches and locks with the locking block 51 on the locking drive assembly 5. The locking groove through hole 16 is surrounded by a water-blocking protrusion 17, and the handle groove 14 is provided with a water-guiding block 18 above the locking groove through hole 16.

[0066] This makes the handle 31 flush with the outer shell 1, which is more aesthetically pleasing. It also reduces moisture and water droplets from entering the handle assembly 3. Even if there is very little water, it will first hit the water-guiding block 18 under the action of gravity. The water-guiding block 18 guides the water to both sides and to the bottom. The protrusion at the water-blocking protrusion 17 prevents water droplets from entering the locking groove through hole 16. Finally, the water will flow to the ground under the action of gravity, greatly reducing the risk of damage to the main control board and causing malfunctions.

[0067] Preferably, the main control board is installed inside the circuit board box 7, and the main control board is equipped with a communication module with network communication function.

[0068] Preferably, the communication module is a wired communication module, a wireless communication module, or a combination of a wired communication module and a wireless communication module, wherein the wireless communication module uses Wi-Fi and / or Bluetooth.

[0069] To address potential extreme situations, such as a failure of the cabinet's low-voltage power supply or a depleted or damaged battery, the main casing 1 preferably includes an emergency power supply hole 15. An emergency power supply interface is installed within this hole. A rubber ring 4 is mounted on the back 13 of the main casing 1, with a power supply port cover 41 at one end. This cover 41 is fitted and sealed to the emergency power supply hole 15. This allows for temporary power supply to the invention via a power bank, mobile phone charger, or even a USB port on an RFID electronic lock intelligent lock control system terminal.

[0070] Since various USB interfaces exist on the market, preferably, a USB interface or magnetic charging interface 151 is installed inside the emergency power supply hole 15. The USB interface is electrically connected to the main control board for power supply, and the USB interface is a Type-A, Type-B, Type-C, Micro-B, or Mini-B interface. Figure 23 As shown, the magnetic charging interface 151 is preferably in a ring shape. The magnetic charging interface has the advantages of blind insertion, magnetic attraction, and waterproofing. The ring-shaped magnetic charging interface 151 is more suitable for blind insertion than the method of several magnetic contacts, and can be rotated at will.

[0071] The magnetic charging interface 151 has better waterproof performance than the conventional USB interface, and the most common method is to use the magnetic charging interface 151.

[0072] Preferably, the connector 32 has a positioning protrusion 323 of square, hexagonal or opposite side shape that matches the locking hook 35 at the mounting end. The locking hook 35 is fixedly mounted on the connector 32 by the positioning protrusion 323. A rotation limiting piece 37 is also mounted on the positioning protrusion 323. A first limiting block 371 is provided around the rotation limiting piece 37 and extends outward. A second limiting block 20 is provided within the rotation range of the first limiting block 371. The first limiting block 371 and the second limiting block 20 cooperate with each other to limit the rotation angle range of the rotation limiting piece 37.

[0073] In this way, the locking hook 35 and the rotation limit plate 37 can be conveniently and quickly positioned and installed on the connector 32.

[0074] To facilitate quick engagement of the locking block 51 with the locking groove 312, preferably, the locking block 51 has a slope 52 on the side away from the back 13 of the main body shell 1. When it is necessary to close the invention, simply press the handle 31 down and align the locking groove 312 with the locking groove through hole 16. At this time, the locking groove 312 will first touch the slope 52 on the locking block 51, causing the locking block 51 to retract. Then, the main body shell 1 will be fully reset, and the locking block 51 will automatically pop out and firmly lock into the locking groove 312. Generally, linear locking drive components 5 usually have a spring installed inside, which will extend the locking block 51 automatically when no power is applied.

[0075] To make the invention smaller and reuse space, preferably, a locking drive assembly groove 21 is provided on the back 13 of the main body shell 1. The locking drive assembly 5 is installed in the locking drive assembly groove 21. The main body shell base 2 is installed above the locking drive assembly groove 21. The main body shell 1 has a second threaded hole 22, and the main body shell base 2 has a third threaded hole 23. The circuit board box 7 is tightened onto the second threaded hole 22 and the third threaded hole 23 with screws. This also better secures the locking drive assembly.

[0076] A miniature alarm can be installed on the main control board. Additionally, the main control board of this invention can emit an alarm sound when it senses forced unlocking or illegal intrusion, and simultaneously send a remote alarm to the RFID electronic lock intelligent control system. Furthermore, when this invention experiences a malfunction, it can also immediately alarm the RFID electronic lock intelligent control system.

[0077] Currently, the mainstream electronic lock intelligent control system uses RFID electronic lock intelligent control system, but this invention can also be adapted to non-RFID electronic lock intelligent control system.

[0078] This embodiment should not be considered as a limitation of the invention, but any improvements made based on the spirit of the invention should be within the protection scope of the invention.

Claims

1. A smart IoT lock, comprising a main body shell (1) and a lock fixing plate (6), wherein the lock fixing plate (6) is a fixed mounting plate on a cabinet for installing the smart IoT lock, characterized in that: The lock fixing plate (6) is provided with bolt mounting holes (61), and the main body shell (1) is provided with handle countersunk hole (11) and first threaded hole (12). The main body shell (1) is fixedly installed on the lock fixing plate (6) through bolts and the first threaded hole (12) in the bolt mounting hole (61); A handle assembly (3) is installed in the countersunk hole (11) of the handle. The handle assembly (3) consists of a handle (31), a connector (32), and a torsion spring (33). The main body of the connector (32) is a rotating body. A locking hook (35) is installed at one end of the connector (32). The other end of the connector (32) is rotatably connected to the handle (31). A torsion spring (33) is installed between the connector (32) and the handle (31). The torsion spring (33) provides a preload force under its own spring force to make the handle (31) rotate and pop out relative to the connector (32). A positioning frustum (321) is provided in the middle of the connector (32). The countersunk hole (11) of the handle is composed of a countersunk hole (111) and a through hole (112). There is a shoulder surface (113) between the countersunk hole (111) and the through hole (112). The positioning frustum (321) of the connector (32) rests on the shoulder surface (113) and the end of the connector (32) with the locking hook (35) passes through the through hole (112). The handle (31) is provided with a locking groove (312) at the end away from the connector (32). The main body shell (1) is provided with a locking drive assembly (5) on the back (13). The output end of the locking drive assembly (5) is provided with a movable locking block (51). The locking block (51) matches the locking groove (312) to lock the handle (31). The back of the main body shell (1) is equipped with a main control board. The main control board controls the switch of the locking drive assembly (5) by electricity. The locking drive assembly (5) is any one of an electromagnetic drive mechanism, a motor drive mechanism, or a drive mechanism that combines a motor and a reduction mechanism.

2. The smart IoT lock according to claim 1, characterized in that: The connector (32) has a positioning frustum (321), and a sealing ring (36) is installed between the positioning frustum (321) and the handle countersunk hole (11).

3. The smart IoT lock according to claim 2, characterized in that: The positioning truncated cone (321) and the shoulder surface (113) are respectively provided with a first sealing groove (324) and a second sealing groove (114) corresponding to each other. The sealing ring (36) is installed in the receiving cavity formed by the first sealing groove (324) and the second sealing groove (114) to perform a sealing function.

4. The smart IoT lock according to claim 1, characterized in that: The locking drive assembly (5) adopts a linear travel mechanism of an electrically controlled switch.

5. A smart IoT lock according to claim 1, characterized in that: A circuit board box (7) is also installed on the back (13) of the main body shell (1). A battery and / or a wired power supply interface are installed inside the circuit board box (7). The battery is used to power the main control board and the locking drive assembly (5). The wired power supply interface can power the main control board and the locking drive assembly (5) and charge the battery.

6. The smart IoT lock according to claim 1, characterized in that: The main body shell (1) is also provided with a handle groove (14) at the handle countersunk hole (11). When the handle assembly (3) is locked, the handle (31) is matched and installed in the handle groove (14). The handle groove (14) is provided with a locking groove through hole (16) below it. The locking groove (312) of the handle (31) passes through the locking groove through hole (16) and matches and locks with the locking block (51) on the locking drive assembly (5). The locking groove through hole (16) is surrounded by a water-blocking protrusion (17), and the handle groove (14) is provided with a water-guiding block (18) above the locking groove through hole (16).

7. A smart IoT lock according to claim 6, characterized in that: The main control board is installed inside the circuit board box (7), and the main control board is equipped with a communication module with network communication function.

8. A smart IoT lock according to claim 7, characterized in that: The communication module is a wired communication module, a wireless communication module, or a combination of a wired communication module and a wireless communication module, wherein the wireless communication module uses Wi-Fi and / or Bluetooth.

9. A smart IoT lock according to claim 1, characterized in that: The main body shell (1) is also provided with an emergency power supply hole (15), an emergency power supply interface is installed in the emergency power supply hole (15), a rubber ring (4) is installed on the back (13) of the main body shell (1), and a power supply port cover (41) is provided at one end of the rubber ring (4), and the power supply port cover (41) matches and seals with the emergency power supply hole (15).

10. A smart IoT lock according to claim 9, characterized in that: The emergency power supply hole (15) is equipped with a USB interface or a magnetic charging interface (151). The USB interface is electrically connected to the main control board for power supply. The USB interface is a Type-A, Type-B, Type-C, Micro-B or Mini-B interface.

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