CN111997447A - Intelligent anti-theft door lock and unlocking method - Google Patents

Abstract

The invention provides an intelligent anti-theft door lock and an unlocking method, wherein the intelligent anti-theft door lock comprises a fixed support and a door lock main body, the fixed support is arranged on an original door lock at one indoor side of a door body, a key sleeve assembly, a driving mechanism and a main control unit are respectively arranged in the door lock main body, and a key matched with the original door lock is arranged in the key sleeve assembly; the key sleeve assembly is connected with the driving mechanism, the driving mechanism is connected with the main control unit, the main control unit is used for controlling the driving mechanism to work or stop, and the driving mechanism is used for driving the key sleeve assembly to rotate so as to enable the key to rotate to unlock or lock. The unlocking method of the intelligent anti-theft door lock comprises the following steps: s001, opening an unlocking app; s002, the unlocking app is connected with the intelligent anti-theft door lock; s003, the unlocking app sends an unlocking instruction; s004, unlocking is executed; the invention provides an intelligent anti-theft door lock and an unlocking method, which overcome the defects that the existing anti-theft door lock is inconvenient to install, easy to damage and unsafe to use.

Description

Intelligent anti-theft door lock and unlocking method

Technical Field

The invention relates to the field of door locks, in particular to an intelligent anti-theft door lock and an unlocking method.

Background

With the acceleration of the life rhythm of people and the increasing popularity of the cognition and the receptivity of common residents to intelligent equipment, particularly the high-speed development of the 4G era and the increasing popularity of the intellectualization of the mobile phone, a plurality of household products can be controlled by the mobile phone. The anti-theft door lock is a most important threshold for entering a home, and is concerned by the majority of residents. However, the conventional security door lock can only open the door by a key, once the key is lost, the door cannot be opened at home, potential safety hazards exist at home, even the original security door lock needs to be replaced by residents, and great inconvenience is brought. Moreover, many young people on duty can easily forget the key according to the current fast-rhythm environment, and more often, do not want to take the key.

In order to avoid the inconvenience factor of forgetting to take a key, a plurality of fingerprint locks and coded locks appear on the market. However, the original anti-theft door lock and the original lock cylinder need to be damaged or replaced when the fingerprint lock or the password lock on the market are installed, and the key needs to be replaced together. And the installation position is outside the door, easily suffers destruction. In addition, the fingerprint characteristics of partial crowds are not obvious, and opening the door through the fingerprint is not easy to realize. The password door opening mode leaves traces of finger pressing on a digital keyboard easily, tracks of the password can be checked through a special tool, and potential safety hazards are brought.

Disclosure of Invention

The technical problem to be solved.

The invention aims to solve the problem of providing an intelligent anti-theft door lock and an unlocking method, so as to overcome the defects of inconvenience in installation, easiness in damage and unsafe use of the existing anti-theft door lock.

The second technical proposal.

In order to solve the technical problem, the invention provides an intelligent anti-theft door lock, which comprises a fixed support and a door lock main body, wherein the fixed support is arranged on an original door lock on one indoor side of a door body; a key sleeve assembly, a driving mechanism and a main control unit are respectively arranged in the door lock main body, and a key matched with the original door lock is installed in the key sleeve assembly; the key sleeve assembly is connected with the driving mechanism, the driving mechanism is connected with the main control unit, the main control unit is used for controlling the driving mechanism to work or stop, and the driving mechanism is used for driving the key sleeve assembly to rotate so as to enable the key to rotate to unlock or lock.

Furthermore, connecting lugs are symmetrically arranged at one end of the fixed support, first mounting holes are formed in the connecting lugs, and second mounting holes are formed in the lower side of the fixed support; the other end symmetry of fixed bolster is provided with spacing post, be provided with in the lock main part with spacing post complex calabash hole.

Furthermore, the key sleeve assembly comprises an outer sleeve and an inner sleeve sleeved in the outer sleeve, and the key is fixed in the inner sleeve; first kidney-shaped grooves are symmetrically formed in the outer sleeve, and a first adjusting screw penetrates through the first kidney-shaped grooves to be in threaded connection with the inner sleeve. A front limiting piece and a rear limiting piece for limiting the key are respectively arranged in the inner sleeve, a second kidney-shaped groove is symmetrically arranged on the inner sleeve, and a fixing screw penetrates through the second kidney-shaped groove to be in threaded connection with the front limiting piece; the rear end of the inner sleeve is in threaded connection with a second adjusting screw, and the end of the second adjusting screw abuts against the rear limiting piece.

Furthermore, the driving mechanism comprises a driving motor and a rotating part, the driving motor is connected with the gear, and an outer gear ring meshed with the gear is fixed on the rotating part; the rotating piece is internally provided with a slot for inserting the key sleeve component.

Furthermore, the rotating part comprises a rolling ring and an inner cylinder sleeved in the rolling ring, a plurality of bulges are annularly and equidistantly arranged on the inner wall surface of the rolling ring, and a plurality of grooves matched with the bulges are annularly and equidistantly arranged on the outer circumferential surface of the inner cylinder; the inner column body comprises a first half column body and a second half column body, dovetail-shaped protrusions are symmetrically arranged on the first half column body, dovetail grooves matched with the dovetail-shaped protrusions are formed in the second half column body, U-shaped grooves are formed in the first half column body and the second half column body respectively, and the two U-shaped grooves form the inserting grooves in an enclosing mode; the end of the rolling ring is fixed with a spring cover in a buckling mode, a spring is installed between the spring cover and the key sleeve assembly, and the spring always enables the key to tend to approach the original door lock.

Further, the main control unit comprises a substrate, and a wireless transmission module, an algorithm module and a touch control module are respectively arranged on the substrate; the wireless transmission module is used for communicating with an external mobile phone and executing a locking and unlocking instruction, the algorithm module is used for running the driving mechanism algorithm, and the door lock main body is provided with a touch switch matched with the touch control module; the base plate is provided with an optical coupler, and the rotating piece is provided with a detection hole matched with the optical coupler.

The invention also provides an unlocking method of the intelligent anti-theft door lock, which comprises the following steps.

Step S001, opening an unlocking app; and lightening the mobile phone screen according to an instruction of lightening the mobile phone screen by the user, and opening the unlocking app to enable the unlocking app to enter a working state.

Step S002, the unlocking app is connected with the intelligent anti-theft door lock; the unlocking app searches for the intelligent anti-theft door lock installed on the original door lock on one indoor side of the door body, the intelligent anti-theft door lock is searched and then connected with the wireless transmission module in the intelligent anti-theft door lock through Bluetooth, and the step S003 is carried out after the intelligent anti-theft door lock is successfully connected.

Step S003, the unlocking app sends an unlocking instruction; the unlocking app sends a secret key to the wireless transmission module, the wireless transmission module sends a feedback command to the unlocking app after the secret key is verified successfully, and the unlocking app sends an unlocking instruction to the wireless transmission module.

Step S004, unlocking is executed; after the wireless transmission module receives an unlocking instruction, the driving mechanism in the intelligent anti-theft door lock is controlled to work, the driving mechanism drives the key sleeve assembly connected with the driving mechanism to rotate, and then a key in the key sleeve assembly rotates to open the door lock.

In step S004, the driving mechanism includes a driving motor and a rotating member, the driving motor is connected to the gear, an outer gear ring engaged with the gear is fixed to the rotating member, and the key sleeve assembly is inserted into the rotating member.

When the lock is unlocked, firstly, the wireless transmission module controls the driving motor to work, the driving motor drives the rotating piece to rotate through the matching of the gear and the outer gear ring, then the rotating piece drives the key sleeve assembly to rotate, and finally, the key in the key sleeve assembly rotates to unlock the door lock.

In step S002, when the unlocking app does not search for the intelligent security door lock, the following steps are performed.

Step S0021, Bluetooth is configured; and entering a configuration mode by long pressing a configuration key on the intelligent anti-theft door lock, searching the intelligent anti-theft door lock again by the unlocking app, connecting the intelligent anti-theft door lock with the wireless transmission module through Bluetooth after the intelligent anti-theft door lock is searched, and entering the step S003 after the intelligent anti-theft door lock is connected into a successful state.

(III) the beneficial effects.

The invention provides an intelligent anti-theft door lock and an unlocking method, wherein the intelligent anti-theft door lock has the following advantages: (1) the door lock is arranged on one side of the interior of the security door, and is the same as the traditional security door lock when being seen from the outside, so that the operation and the damage of illegal personnel can be prevented, and the security is higher; (2) during installation, the original anti-theft door lock does not need to be disassembled, the original lock cylinder does not need to be replaced, and convenient installation can be realized only through the fixed support; (3) the mode that original key opened the door not only can be maintained, still can pair through the all-round encryption of cell-phone and intelligent security door lock, realizes that a key opens the door, and it is safe and convenient to unblank. According to the unlocking method of the intelligent anti-theft door lock, the unlocking app on the mobile phone is used for realizing the unlocking function, the operation is simple, and the unlocking is rapid and convenient.

Drawings

Fig. 1 is a perspective view of an intelligent security door lock of the present invention.

Fig. 2 is a perspective view of another angle of the intelligent security door lock of the present invention.

Fig. 3 is an exploded view of an intelligent security door lock according to the present invention.

Fig. 4 is a schematic structural diagram of an intelligent security door lock according to the present invention.

Fig. 5 is an exploded view of the fixing bracket and the door lock main body of the intelligent security door lock of the present invention.

Fig. 6 is an exploded view of an intelligent security door lock drive mechanism and key sleeve assembly of the present invention.

Fig. 7 is an exploded view of a key sleeve assembly of an intelligent security door lock according to the present invention.

Fig. 8 is a perspective view of an intelligent security door lock driving mechanism according to the present invention.

Fig. 9 is an exploded view of a rotating member, a face plate and a retainer ring of the intelligent security door lock of the present invention.

Fig. 10 is a schematic flow diagram of an unlocking method of the intelligent security door lock according to the present invention.

The corresponding part names for the various reference numbers in the figures are: 1. fixing a bracket; 2. a door lock main body; 3. a key sleeve assembly; 4. a key; 5. connecting lugs; 6. a first mounting hole; 7. a second mounting hole; 8. a limiting column; 9. a gourd hole; 10. an outer sleeve; 11. an inner sleeve; 12. a first kidney-shaped groove; 13. a first adjusting screw; 14. a front stopper; 15. a rear stop; 16. a second kidney-shaped slot; 17. a set screw; 18. a second adjusting screw; 19. a drive motor; 20. a rotating member; 21. a gear; 22. an outer ring gear; 23. a slot; 24. rolling a ring; 25. an inner cylinder; 26. a protrusion; 27. a groove; 28. a first half cylinder; 29. a second half cylinder; 30. a dovetail-shaped protrusion; 31. a dovetail groove; 33. a spring cover; 34. a spring; 35. a substrate; 36. a touch switch; 37. an optical coupler; 38. a detection hole; 39. a side engaging lug; 40. an outer housing; 41. a panel; 42. and a retainer ring.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to 9, the embodiment provides an intelligent security door lock, which includes a fixing bracket 1 and a door lock main body 2, wherein the fixing bracket 1 is installed on an original door lock on one indoor side of a door body, and the door lock main body 2 is fixed on the fixing bracket 1; a key sleeve component 3, a driving mechanism and a main control unit are respectively arranged in the door lock main body 2, a key 4 matched with the original door lock is arranged in the key sleeve component 3, and the key 4 penetrates through the fixed support 1 and is inserted into a lock hole of the original door lock; the key sleeve component 3 is connected with a driving mechanism, the driving mechanism is connected with a main control unit, the main control unit is used for controlling the driving mechanism to work or stop, and the driving mechanism is used for driving the key sleeve component 3 to rotate, so that the key 4 rotates to unlock or lock.

Referring to fig. 1, 2 and 5, one end of a fixing bracket 1 is symmetrically provided with connecting lugs 5, the connecting lugs 5 are provided with first mounting holes 6, and the lower side of the fixing bracket 1 is provided with second mounting holes 7; the other end of the fixed support 1 is symmetrically provided with a limiting column 8, and the door lock main body 2 is provided with a gourd hole 9 matched with the limiting column 8. The back of the fixed support 1 is provided with a strong glue, the side face of the fixed support is also provided with a side connecting lug 39, and the side connecting lug 39 is provided with a third mounting hole.

When the lock is installed, the original door lock is provided with a screw, the fixing support 1 is sleeved on the original lock body after the screw is unscrewed, the super glue on the back surface of the fixing support 1 is torn and attached to the original lock body, then the screw is pressed on the second mounting hole 7 and screwed, and then the two screws are screwed through the first mounting holes 6 and can be pressed on the original lock body to play a role in reinforcement; and finally, the door lock main body 2 is installed on the fixing support 1 through the matching of the gourd hole 9 and the limiting column 8, and then the bolt is taken to be further fixed through the third installation hole. This intelligence security door lock need not to disassemble original security door lock, need not to change original lock core, only needs can realize convenient installation through the fixed bolster, and the installation is simple and convenient, and the adaptation door kind is extensive, and the flexibility is high.

Referring to fig. 4 and 7, the key sleeve assembly 3 comprises an outer sleeve 10 and an inner sleeve 11 sleeved in the outer sleeve 10, and the key 4 is fixed in the inner sleeve 11; the outer sleeve 10 is symmetrically provided with first kidney-shaped grooves 12, and the first adjusting screws 13 penetrate through the first kidney-shaped grooves 12 and are in threaded connection with the inner sleeve 11. A front limiting piece 14 and a rear limiting piece 15 for limiting the key 4 are respectively arranged in the inner sleeve 11, the key 4 is limited between the front limiting piece 14 and the rear limiting piece 15, second kidney-shaped grooves 16 are symmetrically arranged on the inner sleeve 11, and fixing screws 17 penetrate through the second kidney-shaped grooves 16 to be in threaded connection with the front limiting piece 14; the rear end of the inner sleeve 11 is in threaded connection with a second adjusting screw 18, and the end of the second adjusting screw 18 abuts against the rear limiting piece 15.

Because the keys on the market are different in length, the thickness and the shape of the anti-theft door are different; the position of the rear limiting piece 15 in the inner sleeve 11 can be adjusted by arranging the second adjusting screw 18, so that different types of keys can be fixed in the inner sleeve 11; by providing the first kidney-shaped groove 12, the position of the inner sleeve 11 relative to the outer sleeve 10 can be adjusted, thereby adjusting the extension length of the key 4 and ensuring the feasibility of the structure.

Referring to fig. 3 and 9, the main control unit includes a substrate 35; the door lock main body 2 includes an outer case 40, a base plate 35 fixed to a front end of the outer case 40, a panel 41 provided on an outer side of the base plate 35, the panel 41 fixed to the base plate 35 through a retainer ring 42, and a plurality of hooks provided on the retainer ring 42 for hooking to the base plate 35. A battery for supplying power to the substrate 35 is provided in the outer case 40, and a charging port is provided on a surface of the outer case 40.

Referring to fig. 6 and 8, the driving mechanism includes a driving motor 19 fixed on the outer housing 40 and a rotatable rotating member 20, the driving motor 19 is connected with a gear 21, and an outer gear 22 engaged with the gear 21 is fixed on the rotating member 20; the rotating piece 20 is provided with a slot 23 for inserting the key sleeve component 3, and the key sleeve component 3 is inserted in the slot 23.

Referring to fig. 6, the rotating member 20 includes a rolling ring 24 and an inner cylinder 25 sleeved in the rolling ring 24, a plurality of protrusions 26 are annularly and equally spaced on an inner wall surface of the rolling ring 24, and a plurality of grooves 27 matched with the protrusions 26 are annularly and equally spaced on an outer circumferential surface of the inner cylinder 25; the inner column 25 comprises a first half column 28 and a second half column 29, the first half column 28 is symmetrically provided with dovetail-shaped protrusions 30, the second half column 29 is provided with dovetail grooves 31 matched with the dovetail-shaped protrusions 30, the first half column 28 and the second half column 29 are respectively provided with U-shaped grooves, and the two U-shaped grooves form a slot 23 in a surrounding mode. A spring cover 33 is fixed at the end part of the rolling ring 24 in a buckling mode, a spring 34 is installed between the spring cover 33 and the key sleeve component 3, and the spring 34 always enables the key 4 to tend to approach the original door lock.

Referring to fig. 8, the base plate 35 is provided with an optical coupler 37, and the rotating member 20 of the driving mechanism is provided with a detection hole 38 matched with the optical coupler 37; through the cooperation of optical coupler 37 and inspection hole 38, when inspection hole 38 turned to optical coupler 37, optical coupler 37 can export the change amount of a level, and wireless transmission module can be informed to this change amount, tells the number of turns of key sleeve subassembly pivoted, deuterogamies corresponding algorithm to guarantee to unblank at every turn and close the lock after, key 4 all is in horizontal position, guarantees to use the key also to open the lock when opening the door from the outside.

Further, a wireless transmission module, an algorithm module and a touch control module are respectively arranged on the substrate 35, the wireless transmission module is used for communicating with an external mobile phone through bluetooth and executing a locking and unlocking instruction, and the algorithm module is used for operating a driving mechanism and a horizontal position searching algorithm. The door lock main body 2 is provided with a touch switch 36 matched with the touch control module, when a finger touches the touch switch 36, the total induction capacitance value is increased by the induction capacitance parallel connection pad formed by a human body and the ground and the induction capacitance formed by the ground, the touch control module outputs an unlocking signal after detecting that the induction capacitance value of the touch switch 36 is changed, and the wireless transmission module receives the signal and then implements unlocking action.

When the lock is unlocked, the unlocking app on the mobile phone is opened, then the unlocking app is matched with the wireless transmission module and key exchange is carried out, after the key exchange is successful, the unlocking app sends unlocking designation to the wireless transmission module, the wireless transmission module receives the designation and then controls the driving motor 19 to work, the driving motor 19 works to drive the gear 21 to rotate, the gear 21 drives the rotating piece 20 to rotate through the outer gear ring 22, the rotating piece 20 drives the key sleeve component 3 to rotate, then the key 4 rotates to unlock the door lock, after the door lock is unlocked, horizontal position searching is carried out, and the key 4 is ensured to be in the horizontal position through the optical coupler 37, the detection hole 38 and a corresponding algorithm; after entering a house door and closing the security door, the owner delays for a period of time, the intelligent security door lock starts to execute a lock closing instruction, the specific flow is similar to that of unlocking, the horizontal position is searched again after the lock is closed, and the key 4 is ensured to be in the horizontal position after the lock is closed through the optical coupler 37, the detection hole 38 and a corresponding algorithm.

The embodiment also provides an unlocking method of the intelligent anti-theft door lock, which comprises the following steps.

Step S001, opening an unlocking app; and lightening the mobile phone screen according to an instruction of lightening the mobile phone screen by the user, and opening the unlocking app to enable the unlocking app to enter a working state.

Step S002, the unlocking app is connected with the intelligent anti-theft door lock; the unlocking app search is carried out on the intelligent anti-theft door lock installed on the original door lock on one side in the door body, the intelligent anti-theft door lock is searched and then connected with the wireless transmission module in the intelligent anti-theft door lock through Bluetooth, and the step S003 is carried out after the intelligent anti-theft door lock is successfully connected.

Step S003, the unlocking app sends an unlocking instruction; the unlocking app sends the secret key to the wireless transmission module, the wireless transmission module sends the fed-back command to the unlocking app after the secret key is verified successfully, and the unlocking app sends an unlocking instruction to the wireless transmission module.

Step S004, unlocking is executed; after the wireless transmission module receives an unlocking instruction, a driving mechanism in the intelligent anti-theft door lock is controlled to work, the driving mechanism drives a key sleeve component 3 connected with the driving mechanism to rotate, and then a key 4 in the key sleeve component 3 rotates to open the door lock.

In step S004, the driving mechanism includes a driving motor 19 and a rotating member 20, the driving motor 19 is connected to a gear 21, an external gear 22 engaged with the gear 21 is fixed on the rotating member 20, and the key sleeve assembly 3 is inserted into the rotating member 20.

When the lock is unlocked, firstly the wireless transmission module controls the driving motor 19 to work, the driving motor 19 drives the rotating piece 20 to rotate through the matching of the gear 21 and the outer gear ring 22, then the rotating piece 20 drives the key sleeve component 3 to rotate, and finally the key 4 in the key sleeve component 3 rotates to unlock the lock.

In step S002, if the unlock app does not search for the intelligent security door lock, the following steps are performed.

Step S0021, Bluetooth is configured; and entering a configuration mode by long pressing a configuration key on the intelligent anti-theft door lock, searching the intelligent anti-theft door lock again by unlocking app, connecting the intelligent anti-theft door lock with the wireless transmission module after the intelligent anti-theft door lock is searched, and entering the step S003 after the intelligent anti-theft door lock is connected into a power mode.

The embodiment provides an intelligent security door lock and an unlocking method, wherein the intelligent security door lock comprises the following steps: the traditional door opening mode can be maintained, and the original anti-theft door lock does not need to be replaced, so that the door opening function of the mobile phone can be increased; the installation is convenient, the original anti-theft door lock is not required to be disassembled, and the installation can be finished by adding the fixing bracket; a set of perfect driving mechanism is arranged in the intelligent anti-theft door lock, so that the torque required by unlocking and locking different anti-theft door locks can be met; a key sleeve component capable of adjusting the length of a key is designed, so that the installation of different thicknesses of the anti-theft door can be met; the high-precision high-interference-resistance touch switch is used, so that different people can conveniently go out and unlock; the quick-response and high-sensitivity optical coupler is adopted, and an accurate algorithm is matched, so that the key sleeve can be kept in a horizontal position after unlocking and locking each time; the unlocking method of the intelligent anti-theft door lock comprises the following steps: the unlocking app on the mobile phone can realize the unlocking function, and the mobile phone unlocking method is simple to operate and quick and convenient to unlock.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. An intelligence pickproof door lock which characterized in that: the door lock comprises a fixed support (1) and a door lock main body (2), wherein the fixed support (1) is arranged on an original door lock on one indoor side of a door body, and the door lock main body (2) is fixed on the fixed support (1); a key sleeve assembly (3), a driving mechanism and a main control unit are respectively arranged in the door lock main body (2), and a key (4) matched with the original door lock is installed in the key sleeve assembly (3); the key sleeve assembly (3) is connected with the driving mechanism, the driving mechanism is connected with the main control unit, the main control unit is used for controlling the driving mechanism to work or stop, and the driving mechanism is used for driving the key sleeve assembly (3) to rotate, so that the key (4) rotates to unlock or lock.

2. The intelligent security door lock of claim 1, wherein: connecting lugs (5) are symmetrically arranged at one end of the fixed support (1), a first mounting hole (6) is formed in each connecting lug (5), and a second mounting hole (7) is formed in the lower side of the fixed support (1); the other end symmetry of fixed bolster (1) is provided with spacing post (8), be provided with on lock main part (2) with spacing post (8) complex calabash hole (9).

3. The intelligent security door lock of claim 1, wherein: the key sleeve assembly (3) comprises an outer sleeve (10) and an inner sleeve (11) sleeved in the outer sleeve (10), and the key (4) is fixed in the inner sleeve (11); the outer sleeve (10) is symmetrically provided with first kidney-shaped grooves (12), and a first adjusting screw (13) penetrates through the first kidney-shaped grooves (12) to be in threaded connection with the inner sleeve (11).

4. The intelligent security door lock of claim 3, wherein: a front limiting piece (14) and a rear limiting piece (15) for limiting the key (4) are respectively arranged in the inner sleeve (11), second kidney-shaped grooves (16) are symmetrically arranged on the inner sleeve (11), and fixing screws (17) penetrate through the second kidney-shaped grooves (16) to be in threaded connection with the front limiting piece (14); the rear end of the inner sleeve (11) is in threaded connection with a second adjusting screw (18), and the end of the second adjusting screw (18) abuts against the rear limiting piece (15).

5. The intelligent security door lock of claim 1, wherein: the driving mechanism comprises a driving motor (19) and a rotating part (20), the driving motor (19) is connected with a gear (21), and an outer gear ring (22) meshed with the gear (21) is fixed on the rotating part (20); an inserting groove (23) for inserting the key sleeve component (3) is formed in the rotating piece (20).

6. The intelligent security door lock of claim 5, wherein: the rotating part (20) comprises a rolling ring (24) and an inner cylinder (25) sleeved in the rolling ring (24), a plurality of bulges (26) are annularly and equidistantly arranged on the inner wall surface of the rolling ring (24), and a plurality of grooves (27) matched with the bulges (26) are annularly and equidistantly arranged on the outer circumferential surface of the inner cylinder (25); the inner column body (25) comprises a first half column body (28) and a second half column body (29), dovetail-shaped protrusions (30) are symmetrically arranged on the first half column body (28), dovetail grooves (31) matched with the dovetail-shaped protrusions (30) are formed in the second half column body (29), U-shaped grooves are formed in the first half column body (28) and the second half column body (29) respectively, and the two U-shaped grooves surround the slot (23); the tip of rolling circle (24) is fixed with spring cover (33) through the mode of buckle, spring cover (33) with install spring (34) between key sleeve subassembly (3), spring (34) make all the time key (4) directional the trend that original lock is close to.

7. The intelligent security door lock of claim 5, wherein: the main control unit comprises a substrate (35), and a wireless transmission module, an algorithm module and a touch control module are respectively arranged on the substrate (35); the wireless transmission module is used for communicating with an external mobile phone and executing a locking and unlocking instruction, the algorithm module is used for running the algorithm of the driving mechanism, and the door lock main body (2) is provided with a touch switch (36) matched with the touch control module; the base plate (35) is provided with an optical coupler (37), and the rotating piece (20) is provided with a detection hole (38) matched with the optical coupler (37).

8. An unlocking method of an intelligent anti-theft door lock is characterized by comprising the following steps:

step S001, opening an unlocking app; lightening a mobile phone screen according to an instruction of lightening the mobile phone screen by a user, and opening an unlocking app to enable the unlocking app to enter a working state;

step S002, the unlocking app is connected with the intelligent anti-theft door lock; the unlocking app searches for an intelligent anti-theft door lock installed on an original door lock on one indoor side of the door body, the intelligent anti-theft door lock is connected with a wireless transmission module in the intelligent anti-theft door lock through Bluetooth after being searched, and the step S003 is carried out after the intelligent anti-theft door lock is successfully connected;

step S003, the unlocking app sends an unlocking instruction; the unlocking app sends a secret key to the wireless transmission module, the wireless transmission module sends a feedback command to the unlocking app after the secret key is successfully verified, and the unlocking app sends an unlocking instruction to the wireless transmission module;

step S004, unlocking is executed; after the wireless transmission module receives an unlocking instruction, the driving mechanism in the intelligent anti-theft door lock is controlled to work, the driving mechanism drives the key sleeve component (3) connected with the driving mechanism to rotate, and then a key (4) in the key sleeve component (3) rotates to open the door lock.

9. The unlocking method of the intelligent security door lock according to claim 8, characterized in that: in the step S004, the driving mechanism includes a driving motor (19) and a rotating part (20), the driving motor (19) is connected with a gear (21), an external gear ring (22) engaged with the gear (21) is fixed on the rotating part (20), and the key sleeve assembly (3) is inserted into the rotating part (20);

when the lock is unlocked, firstly, the wireless transmission module controls the driving motor (19) to work, the driving motor (19) drives the rotating piece (20) to rotate through the matching of the gear (21) and the outer gear ring (22), then the rotating piece (20) drives the key sleeve component (3) to rotate, and finally, the key (4) in the key sleeve component (3) rotates to unlock the lock.

10. The unlocking method of the intelligent security door lock according to claim 8, characterized in that: in step S002, when the unlocking app does not search for the intelligent security door lock, the following steps are performed:

step S0021, Bluetooth is configured; and entering a configuration mode by long pressing a configuration key on the intelligent anti-theft door lock, searching the intelligent anti-theft door lock again by the unlocking app, connecting the intelligent anti-theft door lock with the wireless transmission module through Bluetooth after the intelligent anti-theft door lock is searched, and entering the step S003 after the intelligent anti-theft door lock is connected into a successful state.

Images