Intelligent lock

Abstract

The utility model discloses an intelligent lock which comprises an outer handle set and an inner handle set. The inner handle set is provided with a second PCB, a switch lock key, a manual unlocking shifting block, an unlocking protection piece, a worm and gear transmission structure and a driving unit. A first Hall element and a second Hall element are arranged on the second PCB; the manual unlocking shifting block is provided with a locked part, a locking position, an unlocking position and a first magnetic piece; the manual unlocking shifting block is arranged above the second PCB in an up-down sliding manner; therefore, the first magnetic part is far away from the first Hall element or is close to the first Hall element to trigger the first Hall element. The unlocking protection piece is provided with a locking part and a second magnetic piece; the unlocking protection piece is arranged on the inner cover in a front-back movable mode and located beside the locked part, so that the locking part and the locked part are mutually locked or separated. Multiple unlocking modes are used in a matched mode, and electronic and mechanical key unlocking, manual unlocking shifting block unlocking and switch lock key unlocking are achieved.

Description

Technical Field

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

[0002] An electric plug lock is an electronically controlled lock that drives the protrusion or retraction of a "lock tongue" through the on-off of an electric current to achieve the functions of locking or unlocking a door. Generally, an electric plug lock consists of two main parts: a lock body and a lock hole. The key component in the lock body is the "lock tongue", which can cooperate with the "lock hole" to achieve two states of "closing the door" and "opening the door", that is, the lock tongue inserts into the lock hole to close the door, and the lock tongue leaves the lock hole to open the door. Therefore, electric plug locks are often used on various swing doors. At the same time, its "hidden" installation feature is more suitable for places with high requirements for the confidentiality of the lock body.

[0003] An intelligent lock is different from a traditional mechanical lock and is a lock that is more intelligent in terms of user identification, security, management, etc. At present, for the electric plug lock on the market that uses a motor-driven gear mechanism, since all transmission gears are directly connected to the motor, when the power is off, forcibly opening and rotating the gears will damage the gearbox inside the motor, resulting in the damage of the entire lock, so it is impossible to directly perform an emergency unlocking.

[0004] Secondly, due to the influence of its own structure, in actual use, there is a possibility of misoperation for an intelligent lock. For example, after unlocking is completed, accidentally pressing the control switch of the intelligent lock will cause the intelligent lock to function, resulting in damage or jamming of the gears inside the motor due to the impact caused by the forced large-current stall when the transmission gears rotate to the limit.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Content of the Utility Model

[0006] In view of this, in view of the deficiencies in the existing technology, the main purpose of the present utility model is to provide an intelligent lock. Through the structural design and cooperation among the lock / unlock button, manual unlocking dial, unlocking protection part, worm and worm gear transmission structure and the driving unit, it effectively solves the problem in the traditional technology that forcibly opening and rotating the gears will damage the gearbox inside the motor, resulting in the damage of the entire lock, so it is impossible to directly perform an emergency unlocking.

[0007] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] An intelligent lock includes an outer handle group and an inner handle group; the outer handle group is provided with a lock core and a first PCB board for receiving electronic signals.

[0009] The inner handle group is provided with a second PCB board, a lock / unlock button, a manual unlocking dial, an unlocking protection part, a worm and worm gear transmission structure and a driving unit.

[0010] The second PCB board is provided with a first Hall element and a second Hall element; the switch lock button is elastically placed on the second PCB board;

[0011] The manual unlocking dial is provided with a locking part, a locking position, an unlocking position, and a first magnetic part for triggering the first Hall element; the locking position communicates with the unlocking position; the manual unlocking dial is slidably arranged above the second PCB board in a vertical direction; such that, the first magnetic part moves away from or approaches and triggers the first Hall element;

[0012] The unlocking protection part is provided with a locking part for cooperating with the locking part and a second magnetic part for triggering the second Hall element; the unlocking protection part is movably arranged on the inner handle set in a front-back direction and is located beside the locking part, such that, the locking part and the locking part lock or disengage from each other, and the second magnetic part moves away from or approaches and triggers the second Hall element;

[0013] One end of the worm and worm gear transmission structure is rotatably connected to one end of the lock core; the other end of the worm and worm gear transmission structure is provided with a convex part for cooperating with the manual unlocking dial; the driving unit is electrically connected to the second PCB board, and a worm is arranged on the output end of the driving unit; the driving unit drives the worm to drive the worm and worm gear transmission structure to rotate.

[0014] As a preferred solution, in the locked state, the locking part of the unlocking protection part is away from the locking part of the manual unlocking dial, and the convex part slides to and stops at the locking position, such that, the manual unlocking dial can slide up and down, and at this time, the second magnetic part is away from the second Hall element;

[0015] In the state of unlocking with the mechanical key, the lock core is driven to rotate by the key, driving the worm and worm gear transmission structure to rotate, such that, the convex part rotates to the unlocking position, and at this time, the unlocking protection part resets backward to lock the locking part of the unlocking protection part and the locking part with each other, and the second magnetic part approaches and triggers the second Hall element;

[0016] In the state of electronic unlocking, the first PCB board receives a control signal, and the second PCB board determines whether it is in the locked state or the unlocked state by judging the position of the first magnetic part through the first Hall element, and judges the operating state of the driving unit through the second Hall element;

[0017] When it is in the locked state, the second PCB board controls the driving unit to drive the worm and worm gear transmission structure, such that, the convex part slides to the unlocking position; at this time, the unlocking protection part resets backward to lock the locking part of the unlocking protection part and the locking part with each other, and the second magnetic part approaches and triggers the second Hall element;

[0018] When in the unlocking state, at this time, the locking part of the unlocking protection member is away from the locked part, and the second PCB board controls the driving unit to reverse, so that the protrusion slides to the locked position. At this time, the manual unlocking block can slide up and down, and the second magnetic member is away from the second Hall element.

[0019] As a preferred solution, the front end of the manual unlocking block is also convexly provided with a toggle portion; when the manual unlocking block is toggled to unlock, the toggle portion is pushed upward so that the convex portion slides to the unlocking position; at this time, the locking portion and the locked portion of the unlocking protection member are locked with each other, and the second magnetic member approaches to trigger the second Hall element.

[0020] As a preferred embodiment, the inner handle group is also provided with an inner cover, the inner cover is provided with an assembly position for installing an unlocking protection member, and the unlocking protection member is arranged in the assembly position; the unlocking protection member includes a vertical connecting part and a transverse connecting part; the locking part is protruding from the upper end of the transverse connecting part; the lower end of the transverse connecting part is also provided with a mounting hole for installing a second magnetic member, and the second magnetic member is installed in the mounting hole.

[0021] As a preferred solution, an elastic member is further provided between the unlocking protection member and the assembly position, one end of the elastic member abuts against the assembly position, and the other end of the elastic member abuts against the vertical connecting portion.

[0022] As a preferred solution, the worm gear transmission structure includes a gear shaft, a driving shaft, a lock core shaft and a worm wheel capable of idling; the convex portion is convexly arranged at the front end of the driving shaft; the rear end of the gear shaft can be floatingly connected to the front end of the worm wheel;

[0023] A first transmission rack is arranged on the rear end of the gear shaft; the front end of the gear shaft can be fixedly connected to the lock core shaft;

[0024] An idle spring is arranged between the driving shaft and the worm gear; an outer periphery of the worm gear is arranged with external teeth, and a second transmission rack for floatingly engaging with the first transmission rack is arranged at the front end of the worm gear; the second transmission rack can be floatingly engaged with the first transmission rack through an idle spring;

[0025] The outer edge of the worm is provided with an oblique rack for meshing with the external teeth of the worm wheel; the oblique teeth of the worm are meshed with the external teeth of the worm wheel.

[0026] As a preferred embodiment, the inner handle group also includes a handle assembly, which includes a bottom cover, a handle body and a handle shaft arranged on the bottom cover; one end of the handle body is rotatably connected to the handle shaft; the handle shaft is connected to the manual unlocking block through a connecting piece.

[0027] As a preferred solution, a power supply module, an external power supply module, a third PCB board, and a fourth PCB board are further provided on the bottom cover. The third PCB board is electrically connected to the power supply module; the external power supply module is electrically connected to the fourth PCB board through a spring, and the external power supply module is exposed outside the inner cover.

[0028] As a preferred solution, the drive unit is a reduction motor.

[0029] As a preferred solution, a first placement position and a second placement position for placing the switch lock button and the manual unlocking slider are provided on the inner cover. The manual unlocking slider is movably arranged up and down in the first placement position; the switch lock button is pressably arranged in the second placement position, and the first placement position is located beside the second placement position.

[0030] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions, it mainly controls the operation and opening / closing of the drive unit and protects the drive unit through the structural design and cooperation among the switch lock button, the manual unlocking slider, the unlocking protection member, the worm and worm gear transmission structure, and the drive unit, and by the cooperation between the first Hall element and the second Hall element and the first magnetic member and the second magnetic member respectively; moreover, in case of emergency, the manual unlocking slider can be toggled to achieve emergency unlocking; multiple unlocking methods are realized and used in combination, including electronic unlocking, mechanical key unlocking, manual unlocking slider unlocking, and switch lock button unlocking. People can flexibly select the unlocking mode according to their needs, thereby improving the use stability of the lock and the user experience. In particular, its structure is simple, the linkage structure between the worm and worm gear transmission structure and the drive unit is stable and reliable, the unlocking is accurate and fast, and the reliability is high, which is suitable for popularization and application;

[0031] Secondly, through the design of the unlocking protection member, in the unlocked state, the locking part and the locked part of the unlocking protection member are locked to each other, and the second magnetic member approaches to trigger the second Hall element. In this state, any lock closing request will not be responded to, thus avoiding the loss or jamming of the secondary gear inside the drive unit caused by stall in the case of accidental touch;

[0032] Next, in the electronic unlocking state, the first PCB board receives a control signal. The second PCB board determines whether it is in the locked state or the unlocked state by judging the position of the first magnetic part through the first Hall element, and judges the operating state of the driving unit through the second Hall element. When in the locked state, the second PCB board controls the driving unit to drive the worm and worm gear transmission structure, so that the convex part slides to the unlocking position. After the door is opened, the unlocking protection part resets under the action of the elastic part. At this time, the locking part and the locked part of the unlocking protection part are locked with each other, and the second magnetic part approaches to trigger the second Hall element. When in the unlocked state and the door is closed, the second PCB board controls the driving unit to reverse, so that the convex part slides to the locked position. At this time, the manual unlocking block can slide up and down, and the second magnetic part is far away from the second Hall element. It can identify whether it is anti-locked without the user having to check and confirm by himself.

[0033] Finally, the first Hall switch and the second Hall switch do not directly contact the first magnetic part and the second magnetic part, which improves the service life of the first Hall switch, the second Hall switch, the first magnetic part and the second magnetic part.

[0034] To more clearly elaborate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Description of the Drawings

[0035] Figure 1 is a perspective view of an embodiment of the present invention;

[0036] Figure 2 is a cross-sectional view of an embodiment of the present invention;

[0037] Figure 3 is another cross-sectional view of an embodiment of the present invention;

[0038] Figure 4 is yet another cross-sectional view of an embodiment of the present invention;

[0039] Figure 5 is Figure 2 a partial enlarged view of A in

[0040] Figure 6 is Figure 4 a partial enlarged view of B in

[0041] Figure 7 is an exploded view of the inner handle group of an embodiment of the present invention;

[0042] Figure 8 is a perspective view of the inner handle group of an embodiment of the present invention.

[0043] Description of the Reference Numerals in the Drawings:

[0044] 10. External handle assembly 11. Lock cylinder

[0045] 12. First PCB board 13. Handle

[0046] 20. Inner handle assembly 21. Second PCB board

[0047] 22. Lock switch button 23. Manual unlocking dial

[0048] 231, locking part 232, locking position

[0049] 233, unlocking position 234, toggle part

[0050] 24. Unlock protection element 25. Driving unit

[0051] 241, locking portion 242, vertical connection portion

[0052] 243, transverse connecting portion 244, elastic member

[0053] 251, worm 252, oblique rack

[0054] 26. First Hall element 27. Second Hall element

[0055] 28. Bottom cover 281. Assembly position

[0056] 29. Handle assembly 291. Inner cover

[0057] 292. handle body 293. handle shaft

[0058] 294, power module 295, external power supply module

[0059] 30. Lock core shaft 31. Convex part

[0060] 32. Driving shaft 33. Gear shaft

[0061] 34. Worm gear 35. Idle spring

[0062] 331. First transmission rack

[0063] 341, external rack 342, second transmission rack

[0064] 40. Automatic locking assembly. DETAILED DESCRIPTION

[0065] Please refer to Figures 1 to 8 As shown, it shows the specific structure of an embodiment of the utility model.

[0066] In the description of the present utility model, it should be noted that for orientation terms, such as the terms "upper", "lower", "front", "rear", "left", "right", etc., indicating the orientation and position relationship are based on the orientation or position relationship shown in the drawings or during normal wearing and use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0067] An intelligent lock includes an outer handle group 10 and an inner handle group 20, and a plurality of automatic lock catch components 40 are also connected between the outer handle group 10 and the inner handle group 20; the outer handle group 10 is provided with a lock core 11 and a first PCB board 12 for receiving electronic signals; a handle 13 is also provided on the outer handle group. In the state of unlocking by card swiping, after the card swiping recognition is completed, the handle 13 will automatically lift, and pulling the handle 13 can complete the unlocking.

[0068] Among them, the outer handle group 10 further includes a lock shell, the handle 13 is arranged on the lock shell, and one end of the handle 13 is pivotally connected to the following bottom cover 28; the automatic lock catch component 40 is connected to the outer handle group through a connecting piece, and unlocking or locking is performed by pulling the outer handle or rotating the inner handle. Among them, the unlocking and locking structure of the automatic lock catch component 40 is a well-known technology in the art and will not be elaborated here.

[0069] The automatic lock catch component 40 includes a lock base, a lock cover and a lock tongue. The lock base is connected to the lock cover, the lock tongue is pivotally arranged on the lock cover, and a lock tongue spring is arranged between the lock tongue and the lock cover;

[0070] The inner handle group 20 is provided with a second PCB board 21, a lock / unlock button 22, a manual unlocking lever 23, an unlocking protection member 24, a lock core rotating shaft 30 and a driving unit 25;

[0071] A first Hall element 26 and a second Hall element 27 are arranged on the second PCB board 21;

[0072] The lock / unlock button 22 is electrically connected to the second PCB board 21;

[0073] The manual unlocking lever 23 is provided with a locking part 231, a locking position 232, an unlocking position 233 and a first magnetic member (not shown in the figure) for triggering the first Hall element 26; the locking position 232 is communicated with the unlocking position 233; the manual unlocking lever 23 is slidably arranged above the second PCB board 21; so that the first magnetic member is far from or close to the first Hall element 26 to trigger the first Hall element 26;

[0074] Preferably, the front end of the manual unlocking block 23 is also convexly provided with a toggle portion 234; when the manual unlocking block 23 is toggled to unlock, the toggle portion 234 is pushed upward so that the protrusion 31 slides to the unlocking position 233; after the door is opened, the unlocking protection member 24 is reset under the action of the elastic member, so that the locking portion 241 of the unlocking protection member 24 and the locked portion 231 are locked with each other, and the second magnetic member described below approaches to trigger the second Hall element 27.

[0075] The unlocking protection member 24 is provided with a locking portion 241 for cooperating with the locked portion 231 and a second magnetic member (not shown) for triggering the second Hall element 27; the unlocking protection member 24 can be movably arranged on the bottom cover 28 and located beside the locked portion 231, and the locking portion 241 and the locked portion 231 are mutually locked or separated by the action of the door and the door frame leaving or closing; the second magnetic member is away from the second Hall element 27 or closes to trigger the second Hall element 27;

[0076] In this embodiment, a door frame is also provided, wherein the unlocking protection member is reset or pressed down by the elastic member according to the relative position (open or closed) of the door and the door frame.

[0077] Preferably, a bottom cover 28 is also provided on the inner handle group 20, and an assembly position 281 for installing an unlocking protection member 24 is provided on the bottom cover 28, and the unlocking protection member 24 is arranged in the assembly position 281; the unlocking protection member 24 includes a vertical connecting portion 242 and a transverse connecting portion 243; the locking portion 241 is protruded from the upper end of the transverse connecting portion 243; the lower end of the transverse connecting portion 243 is also provided with a mounting hole for installing a second magnetic member, and the second magnetic member is installed in the mounting hole.

[0078] Preferably, an elastic member 244 is further provided between the unlocking protection member 24 and the assembly position 281 , one end of the elastic member 244 abuts against the assembly position 281 , and the other end of the elastic member 244 abuts against the vertical connection portion 242 .

[0079] Preferably, when the door is opened, the unlocking protection member 24 is reset under the action of the elastic member, so that the locked portion 231 is locked with the locking portion 241, so that the second magnetic member and the Hall element 27 are triggered. When the door is closed, the unlocking protection member 24 is pressed down by the door frame, so that the locked portion 231 is separated from the locking portion 241, and the second magnetic member leaves the Hall element 27.

[0080] Preferably, the worm gear transmission structure includes a driving shaft 32, a gear shaft 33, a lock core shaft 30 and a worm wheel 34 capable of idling; the convex portion 31 is convexly arranged at the front end of the driving shaft 32; the rear end of the driving shaft 32 is rotatably connected to the front end of the worm wheel 34;

[0081] A first transmission rack 331 is disposed on the rear end of the gear shaft 33; the front end of the gear shaft 33 can be fixedly connected to the lock core shaft 30;

[0082] The lock core shaft 30 is connected to the lock core 11 with an idle driving structure. When the lock core 11 rotates, it can drive the lock core shaft 30 and the driving shaft 32 to realize manual opening and closing of the lock. When the lock is opened / closed electronically, the driving shaft 32 is linked to the lock core shaft 30 to rotate, but at this time the lock core shaft 30 produces idle rotation relative to the lock core 11, and the lock core 11 will not rotate when the lock is electronically unlocked.

[0083] One end of the worm gear transmission structure is rotatably connected to one end of the lock core shaft 30; the other end of the worm gear transmission structure is provided with a convex portion 31 for cooperating with the manual unlocking block 23;

[0084] The driving unit 25 is electrically connected to the second PCB board 21. A worm 251 is disposed on the output end of the driving unit 25. The driving unit 25 drives the worm 251 to rotate the worm wheel 34. Preferably, the driving unit 25 is a reduction motor.

[0085] An idle spring 35 is provided between the driving shaft 32 and the worm wheel 34; an outer rack 341 is provided at the outer periphery of the front end of the worm wheel 34, and a second transmission rack 342 for floating engagement with the first transmission rack 331 is provided at the front end of the worm wheel 34; the second transmission rack 342 can be floatingly engaged with the first transmission rack 331 through an idle spring 35; after the gear shaft 33 rotates to the right position, the reduction motor does not need to be forced to stop by a large current, but stops freely within a preset time through the idle floating engagement transmission teeth. This avoids the internal damage of the micro reduction gear inside the reduction motor caused by the impact force generated by the forced large current stall when the lock core shaft 33 rotates to the limit.

[0086] The outer edge of the worm 251 is provided with an oblique rack 252 for meshing with the outer rack 341 ; the oblique rack is meshed with the outer rack 341 .

[0087] Preferably, the inner handle assembly 20 further includes a handle assembly 29, and the handle assembly 29 includes an inner cover 291, a handle body 292 disposed on the inner cover 291, and a handle rotating shaft 293; one end of the handle body 292 is rotatably connected to the handle rotating shaft 293; the handle rotating shaft 293 is connected to the manual unlocking slider 23 through a connecting member. Preferably, the inner cover 291 is provided with a first placement position and a second placement position for placing the lock switch button 22 and the manual unlocking slider 23, and the manual unlocking slider 23 is vertically movably disposed in the first placement position; the lock switch button 22 is pressably disposed in the second placement position, and the first placement position is beside the second placement position.

[0088] Preferably, a power module 294, an external power supply module 295, a third PCB board and a fourth PCB board are further disposed on the inner cover 291, and the third PCB board is electrically connected to the power module 294; the external power supply module 295 is electrically connected to the fourth PCB board through a spring, and the external power supply module 295 is exposed outside the inner cover 291. At the same time, the power module 294 is electrically connected to the first Hall element 26 and the second Hall element 27 for supplying power to the Hall elements.

[0089] In the locked state, the unlocking protection member 24 will be pressed down by the door frame, and the manual unlocking slider 23 will press down the unlocking protection member 24, so that under the action of the elastic member 244, the locking portion 241 of the unlocking protection member 24 is away from the locked portion 231 of the manual unlocking slider 23, and the convex portion 31 slides to the locked position 232, so that the manual unlocking slider 23 can slide up and down. At this time, the second magnetic member is away from the second Hall element 27;

[0090] In the state of unlocking with a mechanical key, the lock core 11 drives the rotation through the key, drives the lock core rotating shaft 30 to rotate, and drives the drive shaft 32 in a linkage manner, so that the convex portion 31 is located at the unlocking position 233. After the door is opened, the unlocking protection member 24 is reset under the action of the elastic member, so that its locking portion 241 and the locked portion 231 are locked to each other, and the second magnetic member approaches and triggers the second Hall element 27; because the gear rotating shaft and the worm gear are in floating meshing, at this time, the worm gear and the worm do not rotate in a linkage manner.

[0091] An electronic key can also be provided for unlocking. In the state of unlocking with an electronic key, after pressing the electronic key to complete the unlocking, the handle 13 will automatically lift, and pulling the handle 13 can complete the unlocking.

[0092] In this embodiment, multiple programs corresponding to unlocking codes of different electronic keys are stored on the second PCB board 21. The electronic key controls the driving unit 25 through the second PCB board 21 to automatically drive the lock core rotating shaft 30 to rotate, so that the convex part 31 slides from the locking position 232 to the unlocking position 233. An execution program corresponding to the unlocking code of the second PCB board 21 is pre-stored in the electronic key, and the execution program is memorized and stored or solidified in the electronic key.

[0093] In the electronic unlocking state, the first PCB board 12 receives a control signal. The second PCB board 21 determines whether it is in the locked state or the unlocked state by judging the position of the first magnetic part through the first Hall element 26, and judges the operating state of the driving unit 25 through the second Hall element 27;

[0094] When it is in the locked state, the second PCB board 21 controls the driving unit 25 to drive the lock core rotating shaft 30, so that the convex part 31 slides to the unlocking position 233; after the door is opened, at this time, the unlocking protection part resets under the action of the elastic part, and the locking part 241 of the unlocking protection part 24 and the locked part 231 are locked with each other, and the second magnetic part approaches to trigger the second Hall element 27;

[0095] When it is in the unlocked state and the door is closed, the unlocking protection part will be pressed down by the door frame so that the locking part and the locked part are separated and the second magnetic part also moves away from the second Hall element. At this time, the second PCB board 21 controls the driving unit 25 to reverse, so that the convex part 31 slides to the locking position 232. At this time, the manual unlocking block 23 can slide up and down, and the second magnetic part moves away from the second Hall element 27;

[0096] When the switch lock button 22 is pressed in the unlocked state, the second PCB board 21 receives a control signal. The second PCB board 21 determines whether it is in the locked state or the unlocked state by judging the position of the first magnetic part through the first Hall element 26, and judges the operating state of the driving unit 25 through the second Hall element 27; when it is in the locked state, the second PCB board 21 controls the driving unit 25 to drive the lock core rotating shaft 30, so that the convex part 31 slides to the unlocking position 233; after the door is opened, the unlocking protection part 24 resets under the action of the elastic part, so that the locking part 241 of the unlocking protection part 24 and the locked part 231 are locked with each other, and the second magnetic part approaches to trigger the second Hall element 27;

[0097] When it is in the unlocked state and the door is closed, the second PCB board 21 controls the driving unit 25 to reverse, so that the convex part 31 slides to the locking position 232. At this time, the manual unlocking block 23 can slide up and down, and the second magnetic part moves away from the second Hall element 27;

[0098] When the manual unlocking block 23 is toggled to the unlocking state, the manual unlocking block 23 slides the convex portion 31 from the locking position 232 to the unlocking position 233. Since the second transmission rack 342 can be floatingly engaged with the first transmission rack 331 through the idle spring 35, in this state, the worm gear 34 and the worm 251 do not move, and correspondingly, the internal micro gears of the reduction motor are protected.

[0099] The design focus of the present utility model is that mainly through the structural design and cooperation among the lock switch button, the manual unlocking block, the unlocking protection member, the worm gear and worm drive structure and the drive unit, and by using the cooperation between the first Hall element and the second Hall element and the first magnetic member and the second magnetic member respectively, the operation and opening / closing of the drive unit can be controlled, thereby protecting the drive unit; moreover, in case of emergency, emergency unlocking can be achieved by toggling the manual unlocking block; multiple unlocking methods are combined and used, including electronic unlocking with a mechanical key, manual unlocking with the manual unlocking block, and unlocking with the lock switch button, and people can flexibly select the unlocking mode according to their needs, thereby improving the use stability of the lock and the user experience. In particular, its structure is simple, the linkage structure between the worm gear and worm drive structure and the drive unit is stable and reliable, the unlocking is accurate and fast, and it has high reliability and is suitable for popularization and application;

[0100] Secondly, through the design of the unlocking protection member, in the unlocking state, the locking portion and the locked portion of the unlocking protection member are locked with each other, and the second magnetic member approaches to trigger the second Hall element. In this state, any lock closing request will not be responded to, thereby avoiding the loss or jamming of the internal secondary gears of the drive unit caused by stall in the case of accidental touch;

[0101] Then, in the electronic unlocking state, the first PCB board receives the control signal, and the second PCB board determines whether it is in the locked state or the unlocked state by judging the position of the first magnetic member through the first Hall element, and judges the operating state of the drive unit through the second Hall element; when it is in the locked state, the second PCB board controls the drive unit to drive the worm gear and worm drive structure, so that the convex portion slides to the unlocking position; after the door is opened, the unlocking protection member resets under the action of the elastic member. At this time, the locking portion and the locked portion of the unlocking protection member are locked with each other, and the second magnetic member approaches to trigger the second Hall element; when it is in the unlocked state and the door is closed, the second PCB board controls the drive unit to reverse, so that the convex portion slides to the locking position. At this time, the manual unlocking block can slide up and down, and the second magnetic member is away from the second Hall element; it can identify whether it is anti-locked without the user having to check and confirm by himself,

[0102] Finally, the first Hall switch and the second Hall switch do not directly contact the first magnetic member and the second magnetic member, which improves the service life of the first Hall switch, the second Hall switch, the first magnetic member and the second magnetic member.

[0103] As described above, it is only the preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A smart lock, comprising an outer handle group and an inner handle group; the outer handle group is provided with a lock core and a first PCB board for receiving electronic signals; characterized in that: The inner handle assembly is provided with a second PCB board, a switch lock button, a manual unlocking dial block, an unlocking protection member, a worm gear transmission structure and a driving unit; The second PCB board is provided with a first Hall element and a second Hall element; the switch lock button is elastically placed on the second PCB board; The manual unlocking block is provided with a locking portion, a locking position, an unlocking position and a first magnetic member for triggering the first Hall element; the locking position is connected to the unlocking position; the manual unlocking block can be slidably arranged above the second PCB board; so that the first magnetic member is away from the first Hall element or close to trigger the first Hall element; The unlocking protection member is provided with a locking portion for cooperating with the locked portion and a second magnetic member for triggering the second Hall element; the unlocking protection member can be movably arranged on the inner handle assembly and located beside the locked portion, so that the locking portion and the locked portion are mutually locked or separated, and the second magnetic member is away from the second Hall element or close to trigger the second Hall element; One end of the worm gear transmission structure is rotatably connected to one end of the lock core; the other end of the worm gear transmission structure is provided with a protrusion for cooperating with a manual unlocking block; the driving unit is electrically connected to the second PCB board, and a worm is provided on the output end of the driving unit; the driving unit drives the worm to drive the worm gear transmission structure to rotate.

2. A smart lock according to claim 1, characterized in that: In the locked state, the locking portion of the unlocking protection member is away from the locked portion of the manual unlocking block, and the protrusion slides to and stops at the locked position, so that the manual unlocking block can slide up and down. At this time, the second magnetic member is away from the second Hall element; When the mechanical key is unlocked, the lock core is driven to rotate by the key, driving the worm gear transmission structure to rotate, so that the convex portion rotates to the unlocking position. At this time, the unlocking protection member resets backwards, so that the locking portion and the locked portion of the unlocking protection member are locked with each other, and the second magnetic member approaches to trigger the second Hall element; In the electronic unlocking state, the first PCB receives the control signal, the second PCB determines the position of the first magnetic member through the first Hall element to confirm whether it is in the locked state or unlocked state, and determines the operating state of the drive unit through the second Hall element; When in the locked state, the second PCB board controls the driving unit to drive the worm gear transmission structure so that the protrusion slides to the unlocking position; at this time, the unlocking protection member resets backwards so that the locking part and the locked part of the unlocking protection member are locked with each other, and the second magnetic member approaches to trigger the second Hall element; When in the unlocking state, at this time, the locking part of the unlocking protection member is away from the locked part, and the second PCB board controls the driving unit to reverse, so that the protrusion slides to the locked position. At this time, the manual unlocking block can slide up and down, and the second magnetic member is away from the second Hall element.

3. The smart lock according to claim 1, characterized in that: The front end of the manual unlocking block is also convexly provided with a toggle portion; when the manual unlocking block is toggled to unlock, the toggle portion is pushed upward so that the convex portion slides to the unlocking position; at this time, the locking portion and the locked portion of the unlocking protection member are locked with each other, and the second magnetic member approaches to trigger the second Hall element.

4. The smart lock according to claim 1, characterized in that: The inner handle assembly is also provided with an inner cover, and the inner cover is provided with an assembly position for installing an unlocking protection member, and the unlocking protection member is arranged in the assembly position; the unlocking protection member includes a vertical connecting portion and a transverse connecting portion; the locking portion is protruding from the upper end of the transverse connecting portion; the lower end of the transverse connecting portion is also provided with a mounting hole for installing a second magnetic member, and the second magnetic member is installed in the mounting hole.

5. The smart lock according to claim 4, characterized in that: An elastic member is also arranged between the unlocking protection member and the assembly position, one end of the elastic member abuts against the assembly position, and the other end of the elastic member abuts against the vertical connecting portion.

6. The smart lock according to claim 1, characterized in that: The worm gear transmission structure includes a gear shaft, a driving shaft, a lock core shaft and a worm wheel capable of idling; the convex portion is convexly arranged at the front end of the driving shaft; the rear end of the gear shaft can be floatingly connected to the front end of the worm wheel; A first transmission rack is arranged on the rear end of the gear shaft; the front end of the gear shaft can be fixedly connected to the lock core shaft; An idle spring is arranged between the driving shaft and the worm gear; an outer periphery of the worm gear is arranged with external teeth, and a second transmission rack for floatingly engaging with the first transmission rack is arranged at the front end of the worm gear; the second transmission rack can be floatingly engaged with the first transmission rack through an idle spring; The outer edge of the worm is provided with an oblique rack for meshing with the external teeth of the worm wheel; the oblique teeth of the worm are meshed with the external teeth of the worm wheel.

7. The smart lock according to claim 1, characterized in that: The inner handle group also includes a handle assembly, which includes a bottom cover, a handle body and a handle shaft arranged on the bottom cover; one end of the handle body is rotatably connected to the handle shaft; the handle shaft is connected to the manual unlocking block through a connecting piece.

8. The smart lock according to claim 7, characterized in that: The bottom cover is also provided with a power supply module, an external power supply module, a third PCB board and a fourth PCB board, wherein the third PCB board is electrically connected to the power supply module; the external power supply module is electrically connected to the fourth PCB board through a spring, and the external power supply module is exposed outside the inner cover.

9. The smart lock according to claim 1, characterized in that: The driving unit is a reduction motor.

10. The smart lock according to claim 4, characterized in that: The inner cover is provided with a first placement position and a second placement position for placing the switch lock button and the manual unlocking dial block. The manual unlocking dial block can be movably arranged in the first placement position up and down; the switch lock button can be pressed in the second placement position, and the first placement position is located beside the second placement position.

Images