Smart door lock

Abstract

The present invention relates to an intelligent door lock, which comprises a lock body and a lock head. The lock body includes a lock case, an inner door handle disposed on one side outside the lock case, and a lock tongue assembly, a first lock tongue dial block, a second lock tongue dial block, a first dial shaft, a second dial shaft and a driving motor disposed inside the lock case. Both the first lock tongue dial block and the second lock tongue dial block are slidably disposed. The sliding of the first lock tongue dial block and the second lock tongue dial block can respectively drive the lock tongue assembly to retract for unlocking or extend for locking. The driving motor is used to drive the first lock tongue dial block to slide. The rotation of the inner door handle drives the second lock tongue dial block to slide through the first dial shaft. The lock head is separately disposed on the side of the outside of the lock case facing away from the inner door handle. The lock head includes a lock head body and a lock head rotor. The rotation of the lock head rotor drives the second lock tongue dial block to slide through a transmission rod and the second dial shaft. The intelligent door lock of the present invention can be relatively simply installed on a traditional wooden door for use, and has the advantages of simple structure, low cost, easy installation and manufacture, convenient operation and use, and safety and reliability.

Description

Technical Field

[0001] The invention relates to a lock, and in particular to an intelligent door lock suitable for being installed on a traditional wooden door. Background Art

[0002] Smart door locks refer to door locks that are different from traditional mechanical locks and are more intelligent in terms of user identification, security, and manageability. They cover specific types of lock products such as fingerprint locks, electronic password locks, electronic induction locks, networked locks, and remote control locks.

[0003] In modern life, smart door locks are becoming more and more common due to their advantages such as easy opening and closing and high safety performance. However, the lock bodies of most common smart door locks on the market currently adopt an embedded structure, that is, the lock body is placed in a reserved hole on the side of the door body. Since traditional wooden doors do not have reserved installation holes for the lock body when they are designed, the existing embedded smart door locks cannot be installed on traditional wooden doors for use.

[0004] In view of this, Chinese utility model patent CN201820484730.7 discloses a non-embedded smart door lock, which includes an outer lock body installed on the outside of the door body and an inner lock body installed on the inside of the door body. The outer lock body is provided with an outer handle, an outer handle rotating part, an outer square rod sleeve, a clutch mechanism and an electric control module. The outer handle rotating part is fixedly connected to the outer handle, and the outer square rod sleeve and the outer handle rotating part are mutually sleeved. The electric control module is used to control the clutch mechanism to make a clutch action, thereby making the outer square rod sleeve and the outer handle rotating part in a separated or combined state. The inner lock body is provided with an inner handle, an inner handle rotating part, an inner square rod sleeve, a main lock tongue assembly, a tilted tongue assembly, a main lock tongue toggle device, and a tilted tongue toggle device. The inner square rod sleeve and the outer square rod sleeve are connected by a square rod, one end of the square rod is also connected to the inner handle rotating part, and the inner handle is fixedly connected to the inner handle rotating part. Although this patent solves the problem that traditional wooden doors cannot be equipped with smart locks, it still has the following shortcomings:

[0005] 1. The whole lock consists of two lock bodies, inner and outer, which is expensive. It increases the installation cost of smart locks on traditional wooden doors, which is not conducive to large-scale promotion and application.

[0006] 2. When unlocking the door from the outside, the conventional method is still to first control the clutch mechanism to reach the engaged position, and then unlock it by rotating the outer handle. The operation needs to be carried out in two steps, which is not conducive to realizing the quick unlocking of the smart door lock.

[0007] 3. The mechanical key lock is arranged at the bottom of the outer lock body. When the mechanical key is needed for emergency unlocking, the key must be inserted from the keyhole at the bottom of the outer lock body, which is not conducive to the key alignment and twisting operation.

[0008] 4. This intelligent door lock is not only designed with an oblique tongue assembly, but also with a main lock tongue assembly. When unlocking and locking, it is necessary to control the opening or closing of both the oblique tongue assembly and the main lock tongue assembly simultaneously, resulting in a complex structure inside the lock body and being difficult to manufacture. Summary of the Invention

[0009] The object of the present invention is to overcome the deficiencies of the above-mentioned prior art, and to provide an intelligent door lock that can be relatively simply installed on a traditional wooden door for use, and has a simple structure, low cost, easy installation and manufacture, convenient operation and use, and is safe and reliable.

[0010] The object of the present invention is achieved through the following technical solutions:

[0011] An intelligent door lock includes a lock body and a lock head. The lock body includes a lock shell, an inner door handle disposed on one side outside the lock shell, and a lock tongue assembly, a first lock tongue dial, a second lock tongue dial, a first dial shaft, a second dial shaft, and a driving motor disposed inside the lock shell. The first lock tongue dial and the second lock tongue dial are both slidably disposed and are respectively in transmission cooperation with the lock tongue assembly. The sliding of the first lock tongue dial and the second lock tongue dial can respectively drive the lock tongue assembly to retract and unlock or extend and lock. The driving motor is used to drive the sliding of the first lock tongue dial. The rotation of the inner door handle drives the sliding of the second lock tongue dial through the first dial shaft. The lock head is separately disposed on the side of the lock shell facing away from the inner door handle. The lock head includes a lock head body and a lock head rotor rotatably disposed inside the lock head body. The lock head rotor is provided with a keyhole facing away from the opening of the lock shell. One end of the lock head rotor facing the lock shell is connected with a transmission rod. The end of the transmission rod away from the lock head rotor extends into the lock shell and is in transmission connection with the second dial shaft. The rotation of the lock head rotor drives the sliding of the second lock tongue dial through the transmission rod and the second dial shaft.

[0012] Furthermore, the first lock tongue dial and the second lock tongue dial are arranged side by side in the front and back along the opening and closing movement direction of the lock tongue assembly. A slide rail for sliding the first lock tongue dial and the second lock tongue dial is provided inside the lock shell. And a return spring for keeping the second lock tongue dial in a forward trend is provided on the side of the second lock tongue dial facing away from the first lock tongue dial.

[0013] Further, the bolt assembly includes a latch bolt, a latch bolt rod, a first connecting block, a second connecting block, a first compression spring and a second compression spring. On one side wall of the lock case facing the door frame, there is a first opening for the latch bolt to retract or extend. The front end of the latch bolt rod is connected to the latch bolt, and a stop cap is provided at the tail end of the latch bolt rod. The first connecting block and the second connecting block are sleeved on the latch bolt rod at intervals front and back, and the first connecting block is clamped with the first latch bolt dial block, and the second connecting block is clamped with the second latch bolt dial block. The first compression spring is sleeved on the front part of the latch bolt rod, and the second compression spring is sleeved on the tail part of the latch bolt rod. The front end of the first compression spring abuts against the latch bolt and the rear end abuts against the first connecting block. The front end of the second compression spring abuts against the second connecting block and the rear end abuts against the stop cap.

[0014] Further, the first latch bolt dial block is provided with strip teeth arranged along the opening and closing movement direction of the bolt assembly. The output end of the drive motor is provided with a gear, and the gear meshes with the strip teeth. Inside the lock case, there is also a main control board for controlling the drive motor and a rechargeable battery electrically connected to the main control board. The main control board is provided with a first charging interface and a Bluetooth module. At the position corresponding to the first charging interface on the lock case, there is an exposure hole for the first charging interface to be exposed. The Bluetooth module is used for communication connection with an external mobile phone. At the position corresponding to the rechargeable battery on the lock case, there is a battery access opening, and the battery access opening is equipped with a battery cover.

[0015] Further, at one end of the lock head away from the lock case, an operation panel is fixed. The operation panel includes an operation panel housing and a password keypad arranged inside the operation panel housing. The password keypad is electrically connected to the main control board. The password keypad is provided with several password buttons exposed from the side of the operation panel housing facing away from the lock case, and the password keypad is also provided with a second charging interface exposed outside the operation panel housing.

[0016] Further, the first dial shaft is rotatably installed on one side wall of the lock case facing the interior handle. One end of the first dial shaft is located inside the lock case, and the other end is exposed outside the lock case and fixedly connected to the interior handle. On the outer peripheral surface of the end of the first dial shaft located inside the lock case, there is a first dial claw that abuts and cooperates with the second latch bolt dial block.

[0017] Further, the second shifting shaft is coaxially arranged with the first shifting shaft. A supporting hole is formed on the end face of the end of the first shifting shaft located inside the lock housing. One end of the second shifting shaft is rotatably sleeved in the supporting hole, and the other end is rotatably installed on the side wall of the lock housing facing the lock head. A second pawl for abutting and cooperating with the second lock tongue shifting block is provided at one end of the second shifting shaft close to the first shifting shaft. Moreover, when the first shifting shaft rotates, the second shifting shaft will not rotate therewith, and when the second shifting shaft rotates, the first shifting shaft will not rotate therewith.

[0018] Further, a first transmission connection hole is provided at one end of the lock head rotor facing the lock housing. A second transmission connection hole is provided on the second shifting shaft and exposed outside the lock housing. One end of the transmission rod is inserted into the first transmission connection hole and is in transmission cooperation therewith, and the other end of the transmission rod is inserted into the second transmission connection hole and is in transmission cooperation therewith. Further, a lock head fixing plate separately arranged on the side of the lock head facing the lock housing is further included. At least two first fixing holes are provided on the lock head fixing plate, and at least two second fixing holes are provided on the lock head body. The first fixing holes and the second fixing holes are connected by fixing screws. An avoidance groove for embedding the lock head fixing plate is provided on the outer surface of the side wall of the lock housing facing the lock head.

[0019] Further, a locking mechanism is further provided inside the lock housing. The locking mechanism includes a locking component, a torsion spring, a locking trigger component, a trigger component spring, and a locking release component. A second opening for the locking trigger component to extend or retract is provided on the side wall of the lock housing facing the door frame. The trigger component spring is used to keep the locking trigger component in a trend of extending outwards. The torsion spring is fixed on a torsion spring fixing shaft preset inside the lock housing. One end of the torsion spring is connected to the locking component, and the other end is connected to the locking trigger component. One end of the locking component is rotatably arranged, and the other end is a free end. A transmission abutting block is further provided at the rotatably arranged end of the locking component. One end of the locking release component is connected to the second lock tongue shifting block, and the other end is provided with an abutting convex part and an abutting concave part that can be switched and cooperated with the transmission abutting block. In the locked state, the retraction action of the locking trigger component can trigger the locking component to rotate and make the free end of the locking component stop and cooperate with the lock tongue assembly. Moreover, the locking release component can trigger the locking component to rotate in the reverse direction along with the rearward movement of the second lock tongue shifting block and make the free end of the locking component disengage from the stop of the lock tongue assembly.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] First, the intelligent door lock designed by the present invention is composed of only a lock body and a lock head which is separately arranged from the lock body and is connected by a transmission rod. Therefore, it has a simple structure and low cost, can be easily installed on traditional wooden doors for use, and reduces the installation cost for wooden door users.

[0022] Secondly, when unlocking the door outside the house in the present invention, since the design of the clutch structure is cancelled, fast unlocking of the intelligent door lock can be achieved, and its unlocking methods are flexible and diverse, combining three unlocking functions: password button unlocking, mobile phone intelligent unlocking, and mechanical key unlocking, thus greatly facilitating the use of users.

[0023] Furthermore, in the intelligent door lock of the present invention, the front of the keyhole of the lock head faces the user, so that the insertion and screwing of the mechanical key during unlocking can be facilitated.

[0024] Finally, when the intelligent door lock of the present invention is closed, it can automatically trigger the locking component to lock the outwardly extended locking tongue, so that there is no need to separately design a main lock tongue and its control mechanism in the lock body, thereby simplifying the structure of the intelligent door lock, facilitating the manufacture of the intelligent door lock, and ensuring the safety and reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of the intelligent door lock of the present invention.

[0026] Figure 2 is an exploded schematic diagram of the intelligent door lock of the present invention.

[0027] Figure 3 is a schematic diagram of the internal structure of the lock body of the intelligent door lock of the present invention.

[0028] Figure 4 is an assembled schematic diagram of the lock tongue assembly and its unlocking and locking control mechanism part of the intelligent door lock of the present invention.

[0029] Figure 5 is an exploded schematic of the lock body in the intelligent door lock of the present invention Figure 1 。

[0030] Figure 6 is an exploded schematic of the lock body in the intelligent door lock of the present invention Figure 2 。

[0031] Figure 7 is an exploded schematic of the lock head in the intelligent door lock of the present invention Figure 1 。

[0032] Figure 8 is an exploded schematic of the lock head in the intelligent door lock of the present invention Figure 2 。

[0033] Figure 9It is an installation and disassembly schematic diagram of the inner door handle, the first shift shaft, the second shift shaft and the lock head in the intelligent door lock of the present invention.

[0034] Figure 10 It is a schematic structural diagram of the intelligent door lock of the present invention installed on the door body. Detailed implementation manners

[0035] The present invention will be further described in detail below with reference to the embodiments given in the accompanying drawings.

[0036] As Figures 1 to 10 shown, an intelligent door lock according to an embodiment of the present invention includes a lock body 1 and a lock head 2. The lock body 1 includes a lock housing 11, an inner door handle 12 provided on one side outside the lock housing 11, and a lock tongue assembly 13, a first lock tongue shift block 14, a second lock tongue shift block 15, a first shift shaft 16, a second shift shaft 17 and a driving motor 18 provided inside the lock housing 11. The first lock tongue shift block 14 and the second lock tongue shift block 15 are both slidably provided and are respectively in transmission cooperation with the lock tongue assembly 13. The sliding of the first lock tongue shift block 14 and the second lock tongue shift block 15 can respectively drive the lock tongue assembly 13 to retract for unlocking or extend for locking. The driving motor 18 is used to drive the first lock tongue shift block 14 to slide. The rotation of the inner door handle 12 drives the second lock tongue shift block 15 to slide through the first shift shaft 16. The lock head 2 is separately provided on the side of the outside of the lock housing 11 facing away from the inner door handle 12. The lock head 2 includes a lock head body 21 and a lock head rotor 22 rotatably provided in the lock head body 21. A keyhole 221 facing away from the opening of the lock housing 11 is provided on the lock head rotor 22. One end of the lock head rotor 22 facing the lock housing 11 is connected with a transmission rod 30. The end of the transmission rod 30 away from the lock head rotor 22 extends into the lock housing 11 and is in transmission connection with the second shift shaft 17. The rotation of the lock head rotor 22 drives the second lock tongue shift block 15 to slide through the transmission rod 30 and the second shift shaft 17.

[0037] Further, a blade installation groove 222 vertically penetrating the keyhole 221 is also provided on the lock head rotor 22. An unlocking blade 223 and a blade spring are provided in the blade installation groove 222. A blade limiting groove 211 for cooperating with the unlocking blade 223 is provided on the inner peripheral wall of the lock head body 21. In the locked state, the unlocking blade 223 is stuck in the blade limiting groove 211, so that the lock head rotor 22 cannot rotate. When the key matching the lock head 2 is inserted into the keyhole 221 of the lock head rotor 22, the unlocking blade 223 is disengaged from the blade limiting groove 211, so that the lock head rotor 22 is in a rotatable state. At this time, when the key is rotated in the corresponding direction, the lock head rotor 22 can be driven to rotate, and the second lock tongue shift block 15 is driven to slide through the transmission rod 30 and the second shift shaft 17. The sliding of the second lock tongue shift block 15 drives the lock tongue assembly 13 to retract for unlocking, thereby realizing the emergency unlocking function of the mechanical key.

[0038] In this embodiment, the first locking tongue shifting block 14 and the second locking tongue shifting block 15 are arranged side by side in the front-back direction along the opening and closing movement direction of the locking tongue assembly 13. A slide rail 111 for the first locking tongue shifting block 14 and the second locking tongue shifting block 15 to slide is provided in the lock housing 11. And a return spring 151 for keeping the second locking tongue shifting block 15 in a forward trend is provided on the side of the second locking tongue shifting block 15 facing away from the first locking tongue shifting block 14. At the same time, the backward sliding of the first locking tongue shifting block 14 can push the second locking tongue shifting block 15 to slide backward therewith, and the forward sliding of the second locking tongue shifting block 15 can push the first locking tongue shifting block 14 to slide forward therewith.

[0039] In this embodiment, the locking tongue assembly 13 includes an inclined tongue 131, an inclined tongue rod 132, a first connecting block 133, a second connecting block 134, a first compression spring 135 and a second compression spring 136. A first opening 112 for the inclined tongue 131 to retract or extend is provided on a side wall 11a of the lock housing 11 facing the door frame. The front end of the inclined tongue rod 132 is connected to the inclined tongue 131, and a stop cap 137 is provided at the tail end of the inclined tongue rod 132. The first connecting block 133 and the second connecting block 134 are sleeved on the inclined tongue rod 132 at intervals in the front-back direction. And the first connecting block 133 is clamped with the first locking tongue shifting block 14, and the second connecting block 134 is clamped with the second locking tongue shifting block 15. The first compression spring 135 is sleeved on the front part of the inclined tongue rod 132, and the second compression spring 136 is sleeved on the tail part of the inclined tongue rod 132. The front end of the first compression spring 135 abuts against the inclined tongue 131, and the rear end abuts against the first connecting block 133. The front end of the second compression spring 136 abuts against the second connecting block 134, and the rear end abuts against the stop cap 137. This structure enables the sliding of the first locking tongue shifting block 14 and the second locking tongue shifting block 15 to drive the locking tongue assembly 13 to retract and unlock or extend and lock respectively.

[0040] In this embodiment, a strip-shaped tooth 141 arranged along the opening and closing movement direction of the locking tongue assembly 13 is provided on the first locking tongue shifting block 14. A gear 181 is provided at the output end of the driving motor 18, and the gear 181 meshes with the strip-shaped tooth 141, so that the driving motor 18 can drive the first locking tongue shifting block 14 to slide.

[0041] Furthermore, a main control board 40 for controlling the driving motor 18 and a rechargeable battery 50 electrically connected to the main control board 40 are also provided in the lock housing 11. A first charging interface 401 and a Bluetooth module are provided on the main control board 40. An exposure hole 113 for exposing the first charging interface 401 is opened at a position corresponding to the first charging interface 401 on the lock housing 11. The Bluetooth module is used for communicating and connecting with an external mobile phone, so that an unlocking control signal can be sent to the main control board 40 through the external mobile phone, and then the driving motor 18 can be controlled to drive the first locking tongue shifting block 14 to perform an unlocking action, thereby realizing the mobile phone intelligent unlocking function. A battery access opening is opened at a position corresponding to the rechargeable battery 50 on the lock housing 11, and the battery access opening is provided with a battery cover 115.

[0042] Further, at one end of the lock head body 21 away from the lock housing 11, an operation panel 23 surrounding the lock head body 21 is fixed. The operation panel 23 includes an operation panel housing 231 and a password keypad 232 arranged inside the operation panel housing 231. The password keypad 232 is electrically connected to the main control board 40. On the password keypad 232, several password keys 2321 exposed from the side of the operation panel housing 231 facing away from the lock housing 11 are provided. On the password keypad 232, a second charging interface 2322 exposed outside the operation panel housing 231 is also provided. During use, after entering the set unlocking password through the password keys 2321, the driving motor 18 can be controlled to drive the first lock tongue dial block 14 to perform the unlocking action, thereby realizing the password key unlocking function.

[0043] In this embodiment, the first dial shaft 16 is rotatably installed on the side wall 11b of the lock housing 11 facing the inner door handle 12. One end of the first dial shaft 16 is located inside the lock housing 11, and the other end is exposed outside the lock housing 11 and fixedly connected to the inner door handle 12. On the outer peripheral surface of the end of the first dial shaft 16 located inside the lock housing 11, a first dial claw 161 in abutting cooperation with the second lock tongue dial block 15 is provided.

[0044] Further, the second dial shaft 17 is arranged coaxially with the first dial shaft 16. A support hole 162 is formed on the end surface of the end of the first dial shaft 16 located inside the lock housing 11. One end of the second dial shaft 17 is rotatably sleeved in the support hole 162, and the other end is rotatably installed on the side wall 11c of the lock housing 11 facing the lock head 2. A second dial claw 171 in abutting cooperation with the second lock tongue dial block 15 is provided at one end of the second dial shaft 17 close to the first dial shaft 16. Moreover, when the first dial shaft 16 rotates, the second dial shaft 17 will not rotate therewith. When the second dial shaft 17 rotates, the first dial shaft 16 will not rotate therewith, so that the first dial shaft 16 and the second dial shaft 17 can respectively dial the second lock tongue dial block 15 without interference. At the same time, in order to facilitate the installation of each component inside the lock housing 11, the side wall 11c of the lock housing 11 facing the lock head 2 is arranged as a detachable cover structure.

[0045] Further, at one end of the lock head rotor 22 facing the lock housing 11, a first transmission connection hole 225 is provided. On the second dial shaft 17, a second transmission connection hole 172 exposed outside the lock housing 11 is provided. One end of the transmission rod 30 is inserted into the first transmission connection hole 225 and is in transmission cooperation therewith, and the other end of the transmission rod 30 is inserted into the second transmission connection hole 172 and is in transmission cooperation therewith.

[0046] It also includes a lock fixing plate 60 separately arranged on the side of the lock 2 facing the lock housing 11, the lock fixing plate 60 is provided with at least two first fixing holes 601, the lock body 21 is provided with at least two second fixing holes 210, the first fixing holes 601 and the second fixing holes 210 are connected by fixing screws 70, and the outer surface of the side wall 11c of the lock housing 11 facing the lock 2 is provided with an avoidance groove 116 for the lock fixing plate 60 to be embedded.

[0047] As described above, the smart door lock of the present invention can be easily added to a traditional wooden door for use, specifically as follows: the lock 2 is inserted into the reserved through hole of the wooden door from the outside of the door body, the lock fixing plate 60 is arranged on the inside of the door body and is fixedly connected to the lock body 21 by fixing screws 70, and at the same time, the keyhole 221 opening and the operating panel 23 on the lock rotor 22 are exposed to the outside of the door body, so that the user can perform unlocking operations; the lock body 1 is installed on the inside of the door body, and before the lock body 1 is installed, one end of the transmission rod 30 can be inserted into the first transmission connection hole 225 and the other end can be inserted into the second transmission connection hole 172, and then the lock body 1 is fixed to the inside of the door body by screws. At the same time, since the lock shell of the lock body 1 is provided with an avoidance groove 116, it can be ensured that the lock body 1 will not be affected by the lock fixing plate 60 during installation.

[0048] The unlocking principle of the smart door lock of the present invention is as follows: when unlocking from the inside of the door, the inner handle 12 can be rotated, and the second lock tongue block 15 can be driven to slide backwards through the first drive shaft 16, thereby driving the inclined tongue 131 to retract and unlock; when unlocking from the outside of the door, on the one hand, an unlocking control signal can be sent to the smart door lock through the password button 2321 or an external mobile phone, and the driving motor 18 can be controlled to drive the first lock tongue block 14 to slide backwards, thereby driving the inclined tongue 131 to retract and unlock; on the other hand, the lock rotor 22 can be driven to rotate by inserting a key, and the second lock tongue block 15 can be driven to slide backwards through the transmission rod 30 and the second drive shaft 17, thereby driving the inclined tongue 131 to retract and unlock.

[0049] In this embodiment, a locking mechanism 80 is further provided inside the lock housing 11. The locking mechanism 80 includes a locking member 801, a torsion spring 802, a locking trigger member 803, a trigger member spring 804, and a locking release member 805. On one side wall 11a of the lock housing 11 facing the door frame, a second opening 117 is provided for the locking trigger member 803 to extend or retract. The trigger member spring 804 is used to keep the locking trigger member 803 in a tendency of extending. The torsion spring 802 is fixed on a torsion spring fixing shaft 118 preset inside the lock housing 11. One end of the torsion spring 802 is connected to the locking member 801, and the other end is connected to the locking trigger member 803. One end of the locking member 801 is rotatably arranged, and the other end is a free end. A transmission abutting block 806 is further provided at the rotatably arranged end of the locking member 801. One end of the locking release member 805 is connected to the second locking tongue dial block 15, and the other end is provided with an abutting convex portion 8051 and an abutting concave portion 8052 that can be switched and matched with the transmission abutting block 806. In the locked state, the retraction action of the locking trigger member 803 can trigger the locking member 801 to rotate and make the free end of the locking member 801 abut and cooperate with the locking tongue assembly 13 (specifically, abut and cooperate with the rear end of the oblique tongue 131 to prevent the oblique tongue 131 from being pried by foreign objects and retracting inward, thereby avoiding abnormal unlocking). And, in the locked state, the locking release member 805 abuts and cooperates with the transmission abutting block 806 with the abutting concave portion 8052. When unlocking, the backward sliding of the second locking tongue dial block 15 can cause the locking release member 805 to move accordingly and switch to abut and cooperate with the transmission abutting block 806 with the abutting convex portion 8051, thereby causing the locking member 801 to rotate in the reverse direction and making the free end of the locking member 801 turn away from the rear end of the oblique tongue 131 and disengage from the cooperation therewith, so that the oblique tongue 131 can retract and unlock according to the transmission of the second locking tongue dial block 15.

[0050] The front end of the locking trigger member 803 is in a pointed shape. When closing the door, the front end of the locking trigger member 803 abuts against the door frame and retracts, and then triggers the locking member 801 to lock the oblique tongue 131 in the extended locking state.

[0051] The above are only the preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the invention description still fall within the scope covered by the patent of the present invention.

Claims

1. An intelligent door lock, comprising a lock body and a lock head, characterized in that: The lock body includes a lock case, an inner door handle disposed on one side outside the lock case, and a lock tongue assembly, a first lock tongue shifting block, a second lock tongue shifting block, a first shifting shaft, a second shifting shaft, and a driving motor disposed inside the lock case. The first lock tongue shifting block and the second lock tongue shifting block are both slidably disposed and are respectively in transmission cooperation with the lock tongue assembly. The sliding of the first lock tongue shifting block and the second lock tongue shifting block can respectively drive the lock tongue assembly to retract for unlocking or extend for locking. The driving motor is used to drive the first lock tongue shifting block to slide. The rotation of the inner door handle drives the second lock tongue shifting block to slide through the first shifting shaft. The lock head is separately disposed on the side of the lock case facing away from the inner door handle. The lock head includes a lock head body and a lock head rotor rotatably disposed in the lock head body. A keyhole facing away from the opening of the lock case is provided on the lock head rotor. One end of the lock head rotor facing the lock case is connected with a transmission rod. The end of the transmission rod away from the lock head rotor extends into the lock case and is in transmission connection with the second shifting shaft. The rotation of the lock head rotor drives the second lock tongue shifting block to slide through the transmission rod and the second shifting shaft.

2. The intelligent door lock according to claim 1, characterized in that: The first lock tongue shifting block and the second lock tongue shifting block are arranged side by side in the front and back along the opening and locking movement direction of the lock tongue assembly. A slide rail for the first lock tongue shifting block and the second lock tongue shifting block to slide is provided in the lock case. And a reset spring for keeping the second lock tongue shifting block in a forward trend is provided on the side of the second lock tongue shifting block facing away from the first lock tongue shifting block.

3. The intelligent door lock according to claim 2, characterized in that: The lock tongue assembly includes an oblique tongue, an oblique tongue rod, a first connecting block, a second connecting block, a first compression spring, and a second compression spring. A first opening for the oblique tongue to retract or extend is provided on the side wall of the lock case facing the door frame. The front end of the oblique tongue rod is connected with the oblique tongue. A stop cap is provided at the tail end of the oblique tongue rod. The first connecting block and the second connecting block are sleeved on the oblique tongue rod at intervals in the front and back. And the first connecting block is clamped with the first lock tongue shifting block, and the second connecting block is clamped with the second lock tongue shifting block. The first compression spring is sleeved on the front part of the oblique tongue rod. The second compression spring is sleeved on the tail part of the oblique tongue rod. The front end of the first compression spring abuts against the oblique tongue, and the rear end abuts against the first connecting block. The front end of the second compression spring abuts against the second connecting block, and the rear end abuts against the stop cap.

4. The intelligent door lock according to claim 1 or 2 or 3, characterized in that: The first lock tongue shifting block is provided with strip-shaped teeth arranged along the opening and locking movement direction of the lock tongue assembly. The output end of the driving motor is provided with a gear, and the gear meshes with the strip-shaped teeth. A main control board for controlling the driving motor and a rechargeable battery electrically connected to the main control board are further provided in the lock case. A first charging interface and a Bluetooth module are provided on the main control board. An exposure hole for the first charging interface to be exposed is opened at the position of the lock case corresponding to the first charging interface. The Bluetooth module is used for communication connection with an external mobile phone. A battery access port is opened at the position of the lock case corresponding to the rechargeable battery, and the battery access port is provided with a battery cover.

5. The intelligent door lock according to claim 4, characterized in that: One end of the lock head away from the lock housing is fixed with an operation panel, the operation panel includes an operation panel housing and a password keypad arranged in the operation panel housing, the password keypad is electrically connected to the main control board, the password keypad is provided with several password buttons exposed from the side of the operation panel housing facing away from the lock housing, and the password keypad is further provided with a second charging interface exposed outside the operation panel housing.

6. The intelligent door lock according to claim 1 or 2 or 3, characterized in that: The first dial shaft is rotatably installed on the side wall of the lock housing facing the inner door handle, one end of the first dial shaft is located inside the lock housing, the other end is exposed outside the lock housing and is fixedly connected to the inner door handle, and a first claw for abutting and cooperating with the second lock tongue dial block is provided on the outer peripheral surface of the end of the first dial shaft located inside the lock housing.

7. The intelligent door lock according to claim 6, characterized in that: The second dial shaft is arranged coaxially with the first dial shaft. A support hole is formed on the end face of the end of the first dial shaft located inside the lock housing. One end of the second dial shaft is rotatably sleeved in the support hole, and the other end is rotatably installed on the side wall of the lock housing facing the lock head. A second claw for abutting and cooperating with the second lock tongue dial block is provided at the end of the second dial shaft close to the first dial shaft. Moreover, when the first dial shaft rotates, the second dial shaft will not rotate therewith, and when the second dial shaft rotates, the first dial shaft will not rotate therewith.

8. The intelligent door lock according to claim 7, characterized in that: One end of the lock head rotor facing the lock housing is provided with a first transmission connection hole, and the second dial shaft is provided with a second transmission connection hole exposed outside the lock housing. One end of the transmission rod is inserted into the first transmission connection hole and is in transmission cooperation therewith, and the other end of the transmission rod is inserted into the second transmission connection hole and is in transmission cooperation therewith.

9. The intelligent door lock according to claim 1 or 2 or 3, characterized in that: It further includes a lock head fixing plate separately arranged on the side of the lock head facing the lock housing. The lock head fixing plate is provided with at least two first fixing holes, the lock head body is provided with at least two second fixing holes, the first fixing holes and the second fixing holes are connected by fixing screws, and the outer surface of the side wall of the lock housing facing the lock head is provided with an avoidance groove for the lock head fixing plate to be embedded.

10. The intelligent door lock according to claim 1 or 2 or 3, characterized in that: A locking mechanism is further provided inside the lock housing. The locking mechanism includes a locking component, a torsion spring, a locking trigger component, a trigger component spring, and a locking release component. A second opening for the locking trigger component to extend or retract is provided on a side wall of the lock housing facing the door frame. The trigger component spring is used to keep the locking trigger component in an extended trend. The torsion spring is fixed on a torsion spring fixing shaft preset inside the lock housing. One end of the torsion spring is connected to the locking component, and the other end is connected to the locking trigger component. One end of the locking component is rotatably arranged, and the other end is a free end. A transmission abutting block is further provided at the rotatably arranged end of the locking component. One end of the locking release component is connected to the second locking tongue dial block, and the other end is provided with an abutting convex portion and an abutting concave portion that can be switched and cooperated with the transmission abutting block. In the locked state, the retraction action of the locking trigger component can trigger the locking component to rotate and make the free end of the locking component stop and cooperate with the locking tongue assembly. Moreover, the locking release component can move the locking component to rotate in the reverse direction along with the rearward movement of the second locking tongue dial block and make the free end of the locking component disengage from the stop of the locking tongue assembly.

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